- Freeradius-Users - lists.freeradius.org

Problem with Simultaneous-Use
by Felipe Lopez Placencio 04 Aug '15

04 Aug '15

Hi, We are trying to configure our WLC Cisco + FreeRadius + LDAP to WiFi web authentication. At the moment, we have configured almost everything, but still we can't enable the Simultaneous-Use feature. LDAP works fine, we don't have authentication problems. We are using FreeRadius 2.1.12 (Centos 5.11). - The command *radcheck* doesn't show anything, and also doesn't work properly in debbug mode. - The *radutmp* file only save the last logged. We have tried a lot of things but nothing works, Can you help us, please? We stay attentive to any question you have, or if you need some log file (in this case, we did not find any relevant file that attach). Thanks in advance. Below I attach our configuration (the files more important). ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- *User* # SUBRED 1.64, vlan 222 DEFAULT Huntgroup-Name == "SSIDFuncionarios", Ldap-Group == "Empleados", Auth-Type := LDAP , Simultaneous-Use := 2 #SUBRED 1.96,vlan 223 DEFAULT Huntgroup-Name == "SSIDAlumnos", Ldap-Group == "Alumnos", Auth-Type := LDAP, Simultaneous-Use := 2 #SUBRED 1.128, vlan 224 DEFAULT Huntgroup-Name == "SSIDInvitados",Ldap-Group == "invitados", Auth-Type := LDAP DEFAULT Huntgroup-Name == "SSIDFuncionariosPiloto", Ldap-Group == "Empleados", Auth-Type := LDAP, Simultaneous-Use := 2 DEFAULT Auth-Type := REJECT reply-message = "USUARIO DESCONOCIDO O NO ASOCIADO A UN GRUPO" Client.conf client 158.251.4.0/24 { secret = xxxxx shortname = PUCV nastype = cisco } Radiusd.conf prefix = /usr exec_prefix = /usr sysconfdir = /etc localstatedir = /var sbindir = /usr/sbin logdir = ${localstatedir}/log/radius raddbdir = ${sysconfdir}/raddb radacctdir = ${logdir}/radacct # name of the running server. See also the "-n" command-line option. name = radiusd # Location of config and logfiles. confdir = ${raddbdir} run_dir = ${localstatedir}/run/${name} # Should likely be ${localstatedir}/lib/radiusd db_dir = ${raddbdir} # # libdir: Where to find the rlm_* modules. # # This should be automatically set at configuration time. # # If the server builds and installs, but fails at execution time # with an 'undefined symbol' error, then you can use the libdir # directive to work around the problem. # # The cause is usually that a library has been installed on your # system in a place where the dynamic linker CANNOT find it. When # executing as root (or another user), your personal environment MAY # be set up to allow the dynamic linker to find the library. When # executing as a daemon, FreeRADIUS MAY NOT have the same # personalized configuration. # # To work around the problem, find out which library contains that symbol, # and add the directory containing that library to the end of 'libdir', # with a colon separating the directory names. NO spaces are allowed. # # e.g. libdir = /usr/local/lib:/opt/package/lib # # You can also try setting the LD_LIBRARY_PATH environment variable # in a script which starts the server. # # If that does not work, then you can re-configure and re-build the # server to NOT use shared libraries, via: # # ./configure --disable-shared # make # make install # libdir = /usr/lib/freeradius # pidfile: Where to place the PID of the RADIUS server. # # The server may be signalled while it's running by using this # file. # # This file is written when ONLY running in daemon mode. # # e.g.: kill -HUP `cat /var/run/radiusd/radiusd.pid` # pidfile = ${run_dir}/${name}.pid # chroot: directory where the server does "chroot". # # The chroot is done very early in the process of starting the server. # After the chroot has been performed it switches to the "user" listed # below (which MUST be specified). If "group" is specified, it switchs # to that group, too. Any other groups listed for the specified "user" # in "/etc/group" are also added as part of this process. # # The current working directory (chdir / cd) is left *outside* of the # chroot until all of the modules have been initialized. This allows # the "raddb" directory to be left outside of the chroot. Once the # modules have been initialized, it does a "chdir" to ${logdir}. This # means that it should be impossible to break out of the chroot. # # If you are worried about security issues related to this use of chdir, # then simply ensure that the "raddb" directory is inside of the chroot, # end be sure to do "cd raddb" BEFORE starting the server. # # If the server is statically linked, then the only files that have # to exist in the chroot are ${run_dir} and ${logdir}. If you do the # "cd raddb" as discussed above, then the "raddb" directory has to be # inside of the chroot directory, too. # #chroot = /path/to/chroot/directory # user/group: The name (or #number) of the user/group to run radiusd as. # # If these are commented out, the server will run as the user/group # that started it. In order to change to a different user/group, you # MUST be root ( or have root privleges ) to start the server. # # We STRONGLY recommend that you run the server with as few permissions # as possible. That is, if you're not using shadow passwords, the # user and group items below should be set to radius'. # # NOTE that some kernels refuse to setgid(group) when the value of # (unsigned)group is above 60000; don't use group nobody on these systems! # # On systems with shadow passwords, you might have to set 'group = shadow' # for the server to be able to read the shadow password file. If you can # authenticate users while in debug mode, but not in daemon mode, it may be # that the debugging mode server is running as a user that can read the # shadow info, and the user listed below can not. # # The server will also try to use "initgroups" to read /etc/groups. # It will join all groups where "user" is a member. This can allow # for some finer-grained access controls. # user = radiusd group = radiusd # max_request_time: The maximum time (in seconds) to handle a request. # # Requests which take more time than this to process may be killed, and # a REJECT message is returned. # # WARNING: If you notice that requests take a long time to be handled, # then this MAY INDICATE a bug in the server, in one of the modules # used to handle a request, OR in your local configuration. # # This problem is most often seen when using an SQL database. If it takes # more than a second or two to receive an answer from the SQL database, # then it probably means that you haven't indexed the database. See your # SQL server documentation for more information. # # Useful range of values: 5 to 120 # max_request_time = 30 # cleanup_delay: The time to wait (in seconds) before cleaning up # a reply which was sent to the NAS. # # The RADIUS request is normally cached internally for a short period # of time, after the reply is sent to the NAS. The reply packet may be # lost in the network, and the NAS will not see it. The NAS will then # re-send the request, and the server will respond quickly with the # cached reply. # # If this value is set too low, then duplicate requests from the NAS # MAY NOT be detected, and will instead be handled as seperate requests. # # If this value is set too high, then the server will cache too many # requests, and some new requests may get blocked. (See 'max_requests'.) # # Useful range of values: 2 to 10 # cleanup_delay = 5 # max_requests: The maximum number of requests which the server keeps # track of. This should be 256 multiplied by the number of clients. # e.g. With 4 clients, this number should be 1024. # # If this number is too low, then when the server becomes busy, # it will not respond to any new requests, until the 'cleanup_delay' # time has passed, and it has removed the old requests. # # If this number is set too high, then the server will use a bit more # memory for no real benefit. # # If you aren't sure what it should be set to, it's better to set it # too high than too low. Setting it to 1000 per client is probably # the highest it should be. # # Useful range of values: 256 to infinity # max_requests = 1024 # listen: Make the server listen on a particular IP address, and send # replies out from that address. This directive is most useful for # hosts with multiple IP addresses on one interface. # # If you want the server to listen on additional addresses, or on # additionnal ports, you can use multiple "listen" sections. # # Each section make the server listen for only one type of packet, # therefore authentication and accounting have to be configured in # different sections. # # The server ignore all "listen" section if you are using '-i' and '-p' # on the command line. # listen { # Type of packets to listen for. # Allowed values are: # auth listen for authentication packets # acct listen for accounting packets # proxy IP to use for sending proxied packets # detail Read from the detail file. For examples, see # raddb/sites-available/copy-acct-to-home-server # status listen for Status-Server packets. For examples, # see raddb/sites-available/status # coa listen for CoA-Request and Disconnect-Request # packets. For examples, see the file # raddb/sites-available/coa-server # type = auth # Note: "type = proxy" lets you control the source IP used for # proxying packets, with some limitations: # # * A proxy listener CANNOT be used in a virtual server section. # * You should probably set "port = 0". # * Any "clients" configuration will be ignored. # # See also proxy.conf, and the "src_ipaddr" configuration entry # in the sample "home_server" section. When you specify the # source IP address for packets sent to a home server, the # proxy listeners are automatically created. # IP address on which to listen. # Allowed values are: # dotted quad (1.2.3.4) # hostname (radius.example.com) # wildcard (*) ipaddr = * # OR, you can use an IPv6 address, but not both # at the same time. # ipv6addr = :: # any. ::1 == localhost # Port on which to listen. # Allowed values are: # integer port number (1812) # 0 means "use /etc/services for the proper port" port = 0 # Some systems support binding to an interface, in addition # to the IP address. This feature isn't strictly necessary, # but for sites with many IP addresses on one interface, # it's useful to say "listen on all addresses for eth0". # # If your system does not support this feature, you will # get an error if you try to use it. # # interface = eth0 # Per-socket lists of clients. This is a very useful feature. # # The name here is a reference to a section elsewhere in # radiusd.conf, or clients.conf. Having the name as # a reference allows multiple sockets to use the same # set of clients. # # If this configuration is used, then the global list of clients # is IGNORED for this "listen" section. Take care configuring # this feature, to ensure you don't accidentally disable a # client you need. # # See clients.conf for the configuration of "per_socket_clients". # # clients = per_socket_clients } # This second "listen" section is for listening on the accounting # port, too. # listen { ipaddr = * # ipv6addr = :: port = 0 type = acct # interface = eth0 # clients = per_socket_clients } # hostname_lookups: Log the names of clients or just their IP addresses # e.g., www.freeradius.org (on) or 206.47.27.232 (off). # # The default is 'off' because it would be overall better for the net # if people had to knowingly turn this feature on, since enabling it # means that each client request will result in AT LEAST one lookup # request to the nameserver. Enabling hostname_lookups will also # mean that your server may stop randomly for 30 seconds from time # to time, if the DNS requests take too long. # # Turning hostname lookups off also means that the server won't block # for 30 seconds, if it sees an IP address which has no name associated # with it. # # allowed values: {no, yes} # hostname_lookups = no # Core dumps are a bad thing. This should only be set to 'yes' # if you're debugging a problem with the server. # # allowed values: {no, yes} # allow_core_dumps = no # Regular expressions # # These items are set at configure time. If they're set to "yes", # then setting them to "no" turns off regular expression support. # # If they're set to "no" at configure time, then setting them to "yes" # WILL NOT WORK. It will give you an error. # regular_expressions = yes extended_expressions = yes # # Logging section. The various "log_*" configuration items # will eventually be moved here. # log { # # Destination for log messages. This can be one of: # # files - log to "file", as defined below. # syslog - to syslog (see also the "syslog_facility", below. # stdout - standard output # stderr - standard error. # # The command-line option "-X" over-rides this option, and forces # logging to go to stdout. # destination = files # # The logging messages for the server are appended to the # tail of this file if destination == "files" # # If the server is running in debugging mode, this file is # NOT used. # file = ${logdir}/radius.log # # If this configuration parameter is set, then log messages for # a *request* go to this file, rather than to radius.log. # # i.e. This is a log file per request, once the server has accepted # the request as being from a valid client. Messages that are # not associated with a request still go to radius.log. # # Not all log messages in the server core have been updated to use # this new internal API. As a result, some messages will still # go to radius.log. Please submit patches to fix this behavior. # # The file name is expanded dynamically. You should ONLY user # server-side attributes for the filename (e.g. things you control). # Using this feature MAY also slow down the server substantially, # especially if you do thinks like SQL calls as part of the # expansion of the filename. # # The name of the log file should use attributes that don't change # over the lifetime of a request, such as User-Name, # Virtual-Server or Packet-Src-IP-Address. Otherwise, the log # messages will be distributed over multiple files. # # Logging can be enabled for an individual request by a special # dynamic expansion macro: %{debug: 1}, where the debug level # for this request is set to '1' (or 2, 3, etc.). e.g. # # ... # update control { # Tmp-String-0 = "%{debug:1}" # } # ... # # The attribute that the value is assigned to is unimportant, # and should be a "throw-away" attribute with no side effects. # requests = ${logdir}/radiusd-%{%{Virtual-Server}:-DEFAULT}-%Y%m%d.log # # Which syslog facility to use, if ${destination} == "syslog" # # The exact values permitted here are OS-dependent. You probably # don't want to change this. # syslog_facility = daemon # Log the full User-Name attribute, as it was found in the request. # # allowed values: {no, yes} # stripped_names = yes # Log authentication requests to the log file. # # allowed values: {no, yes} # auth = yes # Log passwords with the authentication requests. # auth_badpass - logs password if it's rejected # auth_goodpass - logs password if it's correct # # allowed values: {no, yes} # auth_badpass = yes auth_goodpass = no # Log additional text at the end of the "Login OK" messages. # for these to work, the "auth" and "auth_goopass" or "auth_badpass" # configurations above have to be set to "yes". # # The strings below are dynamically expanded, which means that # you can put anything you want in them. However, note that # this expansion can be slow, and can negatively impact server # performance. # # msg_goodpass = "" # msg_badpass = "" } # The program to execute to do concurrency checks. checkrad = ${sbindir}/checkrad # SECURITY CONFIGURATION # # There may be multiple methods of attacking on the server. This # section holds the configuration items which minimize the impact # of those attacks # security { # # max_attributes: The maximum number of attributes # permitted in a RADIUS packet. Packets which have MORE # than this number of attributes in them will be dropped. # # If this number is set too low, then no RADIUS packets # will be accepted. # # If this number is set too high, then an attacker may be # able to send a small number of packets which will cause # the server to use all available memory on the machine. # # Setting this number to 0 means "allow any number of attributes" max_attributes = 200 # # reject_delay: When sending an Access-Reject, it can be # delayed for a few seconds. This may help slow down a DoS # attack. It also helps to slow down people trying to brute-force # crack a users password. # # Setting this number to 0 means "send rejects immediately" # # If this number is set higher than 'cleanup_delay', then the # rejects will be sent at 'cleanup_delay' time, when the request # is deleted from the internal cache of requests. # # Useful ranges: 1 to 5 reject_delay = 1 # # status_server: Whether or not the server will respond # to Status-Server requests. # # When sent a Status-Server message, the server responds with # an Access-Accept or Accounting-Response packet. # # This is mainly useful for administrators who want to "ping" # the server, without adding test users, or creating fake # accounting packets. # # It's also useful when a NAS marks a RADIUS server "dead". # The NAS can periodically "ping" the server with a Status-Server # packet. If the server responds, it must be alive, and the # NAS can start using it for real requests. # # See also raddb/sites-available/status # status_server = yes } # PROXY CONFIGURATION # # proxy_requests: Turns proxying of RADIUS requests on or off. # # The server has proxying turned on by default. If your system is NOT # set up to proxy requests to another server, then you can turn proxying # off here. This will save a small amount of resources on the server. # # If you have proxying turned off, and your configuration files say # to proxy a request, then an error message will be logged. # # To disable proxying, change the "yes" to "no", and comment the # $INCLUDE line. # # allowed values: {no, yes} # proxy_requests = yes $INCLUDE proxy.conf # CLIENTS CONFIGURATION # # Client configuration is defined in "clients.conf". # # The 'clients.conf' file contains all of the information from the old # 'clients' and 'naslist' configuration files. We recommend that you # do NOT use 'client's or 'naslist', although they are still # supported. # # Anything listed in 'clients.conf' will take precedence over the # information from the old-style configuration files. # $INCLUDE clients.conf # THREAD POOL CONFIGURATION # # The thread pool is a long-lived group of threads which # take turns (round-robin) handling any incoming requests. # # You probably want to have a few spare threads around, # so that high-load situations can be handled immediately. If you # don't have any spare threads, then the request handling will # be delayed while a new thread is created, and added to the pool. # # You probably don't want too many spare threads around, # otherwise they'll be sitting there taking up resources, and # not doing anything productive. # # The numbers given below should be adequate for most situations. # thread pool { # Number of servers to start initially --- should be a reasonable # ballpark figure. start_servers = 5 # Limit on the total number of servers running. # # If this limit is ever reached, clients will be LOCKED OUT, so it # should NOT BE SET TOO LOW. It is intended mainly as a brake to # keep a runaway server from taking the system with it as it spirals # down... # # You may find that the server is regularly reaching the # 'max_servers' number of threads, and that increasing # 'max_servers' doesn't seem to make much difference. # # If this is the case, then the problem is MOST LIKELY that # your back-end databases are taking too long to respond, and # are preventing the server from responding in a timely manner. # # The solution is NOT do keep increasing the 'max_servers' # value, but instead to fix the underlying cause of the # problem: slow database, or 'hostname_lookups=yes'. # # For more information, see 'max_request_time', above. # max_servers = 32 # Server-pool size regulation. Rather than making you guess # how many servers you need, FreeRADIUS dynamically adapts to # the load it sees, that is, it tries to maintain enough # servers to handle the current load, plus a few spare # servers to handle transient load spikes. # # It does this by periodically checking how many servers are # waiting for a request. If there are fewer than # min_spare_servers, it creates a new spare. If there are # more than max_spare_servers, some of the spares die off. # The default values are probably OK for most sites. # min_spare_servers = 3 max_spare_servers = 10 # When the server receives a packet, it places it onto an # internal queue, where the worker threads (configured above) # pick it up for processing. The maximum size of that queue # is given here. # # When the queue is full, any new packets will be silently # discarded. # # The most common cause of the queue being full is that the # server is dependent on a slow database, and it has received # a large "spike" of traffic. When that happens, there is # very little you can do other than make sure the server # receives less traffic, or make sure that the database can # handle the load. # # max_queue_size = 65536 # There may be memory leaks or resource allocation problems with # the server. If so, set this value to 300 or so, so that the # resources will be cleaned up periodically. # # This should only be necessary if there are serious bugs in the # server which have not yet been fixed. # # '0' is a special value meaning 'infinity', or 'the servers never # exit' max_requests_per_server = 0 } # MODULE CONFIGURATION # # The names and configuration of each module is located in this section. # # After the modules are defined here, they may be referred to by name, # in other sections of this configuration file. # modules { # # Each module has a configuration as follows: # # name [ instance ] { # config_item = value # ... # } # # The 'name' is used to load the 'rlm_name' library # which implements the functionality of the module. # # The 'instance' is optional. To have two different instances # of a module, it first must be referred to by 'name'. # The different copies of the module are then created by # inventing two 'instance' names, e.g. 'instance1' and 'instance2' # # The instance names can then be used in later configuration # INSTEAD of the original 'name'. See the 'radutmp' configuration # for an example. # # # As of 2.0.5, most of the module configurations are in a # sub-directory. Files matching the regex /[a-zA-Z0-9_.]+/ # are loaded. The modules are initialized ONLY if they are # referenced in a processing section, such as authorize, # authenticate, accounting, pre/post-proxy, etc. # $INCLUDE ${confdir}/modules/ # Extensible Authentication Protocol # # For all EAP related authentications. # Now in another file, because it is very large. # $INCLUDE eap.conf # Include another file that has the SQL-related configuration. # This is another file only because it tends to be big. # # $INCLUDE sql.conf # # This module is an SQL enabled version of the counter module. # # Rather than maintaining seperate (GDBM) databases of # accounting info for each counter, this module uses the data # stored in the raddacct table by the sql modules. This # module NEVER does any database INSERTs or UPDATEs. It is # totally dependent on the SQL module to process Accounting # packets. # # $INCLUDE sql/mysql/counter.conf # # IP addresses managed in an SQL table. # # $INCLUDE sqlippool.conf } # Instantiation # # This section orders the loading of the modules. Modules # listed here will get loaded BEFORE the later sections like # authorize, authenticate, etc. get examined. # # This section is not strictly needed. When a section like # authorize refers to a module, it's automatically loaded and # initialized. However, some modules may not be listed in any # of the following sections, so they can be listed here. # # Also, listing modules here ensures that you have control over # the order in which they are initalized. If one module needs # something defined by another module, you can list them in order # here, and ensure that the configuration will be OK. # instantiate { # # Allows the execution of external scripts. # The entire command line (and output) must fit into 253 bytes. # # e.g. Framed-Pool = `%{exec:/bin/echo foo}` exec # # The expression module doesn't do authorization, # authentication, or accounting. It only does dynamic # translation, of the form: # # Session-Timeout = `%{expr:2 + 3}` # # So the module needs to be instantiated, but CANNOT be # listed in any other section. See 'doc/rlm_expr' for # more information. # expr # # We add the counter module here so that it registers # the check-name attribute before any module which sets # it # daily expiration logintime # subsections here can be thought of as "virtual" modules. # # e.g. If you have two redundant SQL servers, and you want to # use them in the authorize and accounting sections, you could # place a "redundant" block in each section, containing the # exact same text. Or, you could uncomment the following # lines, and list "redundant_sql" in the authorize and # accounting sections. # #redundant redundant_sql { # sql1 # sql2 #} } $INCLUDE policy.conf $INCLUDE sites-enabled/ *Default* authorize { # # Security settings. Take a User-Name, and do some simple # checks on it, for spaces and other invalid characters. If # it looks like the user is trying to play games, reject it. # # This should probably be enabled by default. # # See policy.conf for the definition of the filter_username policy. # # filter_username # # The preprocess module takes care of sanitizing some bizarre # attributes in the request, and turning them into attributes # which are more standard. # # It takes care of processing the 'raddb/hints' and the # 'raddb/huntgroups' files. preprocess # # If you want to have a log of authentication requests, # un-comment the following line, and the 'detail auth_log' # section, above. auth_log # # The chap module will set 'Auth-Type := CHAP' if we are # handling a CHAP request and Auth-Type has not already been set # chap # # If the users are logging in with an MS-CHAP-Challenge # attribute for authentication, the mschap module will find # the MS-CHAP-Challenge attribute, and add 'Auth-Type := MS-CHAP' # to the request, which will cause the server to then use # the mschap module for authentication. # mschap # # If you have a Cisco SIP server authenticating against # FreeRADIUS, uncomment the following line, and the 'digest' # line in the 'authenticate' section. # digest # # The WiMAX specification says that the Calling-Station-Id # is 6 octets of the MAC. This definition conflicts with # RFC 3580, and all common RADIUS practices. Un-commenting # the "wimax" module here means that it will fix the # Calling-Station-Id attribute to the normal format as # specified in RFC 3580 Section 3.21 # wimax # # Look for IPASS style 'realm/', and if not found, look for # '@realm', and decide whether or not to proxy, based on # that. # IPASS # # If you are using multiple kinds of realms, you probably # want to set "ignore_null = yes" for all of them. # Otherwise, when the first style of realm doesn't match, # the other styles won't be checked. # suffix # ntdomain # # This module takes care of EAP-MD5, EAP-TLS, and EAP-LEAP # authentication. # # It also sets the EAP-Type attribute in the request # attribute list to the EAP type from the packet. # # As of 2.0, the EAP module returns "ok" in the authorize stage # for TTLS and PEAP. In 1.x, it never returned "ok" here, so # this change is compatible with older configurations. # # The example below uses module failover to avoid querying all # of the following modules if the EAP module returns "ok". # Therefore, your LDAP and/or SQL servers will not be queried # for the many packets that go back and forth to set up TTLS # or PEAP. The load on those servers will therefore be reduced. # # eap { # ok = return # } # # Pull crypt'd passwords from /etc/passwd or /etc/shadow, # using the system API's to get the password. If you want # to read /etc/passwd or /etc/shadow directly, see the # passwd module in radiusd.conf. # # unix # # Read the 'users' file files # # Look in an SQL database. The schema of the database # is meant to mirror the "users" file. # # See "Authorization Queries" in sql.conf # sql # # If you are using /etc/smbpasswd, and are also doing # mschap authentication, the un-comment this line, and # configure the 'etc_smbpasswd' module, above. # etc_smbpasswd # # The ldap module will set Auth-Type to LDAP if it has not # already been set load-balance{ redundant{ ldapDS01 ldapDS02 } redundant{ ldapDS02 ldapDS01 } } # # Enforce daily limits on time spent logged in. # daily # # Use the checkval module # checkval expiration logintime # # If no other module has claimed responsibility for # authentication, then try to use PAP. This allows the # other modules listed above to add a "known good" password # to the request, and to do nothing else. The PAP module # will then see that password, and use it to do PAP # authentication. # # This module should be listed last, so that the other modules # get a chance to set Auth-Type for themselves. # # pap # # If "status_server = yes", then Status-Server messages are passed # through the following section, and ONLY the following section. # This permits you to do DB queries, for example. If the modules # listed here return "fail", then NO response is sent. # # Autz-Type Status-Server { # # } } # Authentication. # # # This section lists which modules are available for authentication. # Note that it does NOT mean 'try each module in order'. It means # that a module from the 'authorize' section adds a configuration # attribute 'Auth-Type := FOO'. That authentication type is then # used to pick the apropriate module from the list below. # # In general, you SHOULD NOT set the Auth-Type attribute. The server # will figure it out on its own, and will do the right thing. The # most common side effect of erroneously setting the Auth-Type # attribute is that one authentication method will work, but the # others will not. # # The common reasons to set the Auth-Type attribute by hand # is to either forcibly reject the user (Auth-Type := Reject), # or to or forcibly accept the user (Auth-Type := Accept). # # Note that Auth-Type := Accept will NOT work with EAP. # # Please do not put "unlang" configurations into the "authenticate" # section. Put them in the "post-auth" section instead. That's what # the post-auth section is for. # authenticate { # # PAP authentication, when a back-end database listed # in the 'authorize' section supplies a password. The # password can be clear-text, or encrypted. # Auth-Type PAP { # pap # } # # Most people want CHAP authentication # A back-end database listed in the 'authorize' section # MUST supply a CLEAR TEXT password. Encrypted passwords # won't work. # Auth-Type CHAP { # chap # } # # MSCHAP authentication. # Auth-Type MS-CHAP { # mschap # } # # If you have a Cisco SIP server authenticating against # FreeRADIUS, uncomment the following line, and the 'digest' # line in the 'authorize' section. # digest # # Pluggable Authentication Modules. # pam # # See 'man getpwent' for information on how the 'unix' # module checks the users password. Note that packets # containing CHAP-Password attributes CANNOT be authenticated # against /etc/passwd! See the FAQ for details. # # For normal "crypt" authentication, the "pap" module should # be used instead of the "unix" module. The "unix" module should # be used for authentication ONLY for compatibility with legacy # FreeRADIUS configurations. # # unix # Uncomment it if you want to use ldap for authentication # # Note that this means "check plain-text password against # the ldap database", which means that EAP won't work, # as it does not supply a plain-text password. Auth-Type LDAP { load-balance{ redundant{ ldapDS01 ldapDS02 } redundant{ ldapDS02 ldapDS01 } } } # # Allow EAP authentication. # eap # # The older configurations sent a number of attributes in # Access-Challenge packets, which wasn't strictly correct. # If you want to filter out these attributes, uncomment # the following lines. # # Auth-Type eap { # eap { # handled = 1 # } # if (handled && (Response-Packet-Type == Access-Challenge)) { # attr_filter.access_challenge.post-auth # handled # override the "updated" code from attr_filter # } # } } # # Pre-accounting. Decide which accounting type to use. # preacct { preprocess # # Session start times are *implied* in RADIUS. # The NAS never sends a "start time". Instead, it sends # a start packet, *possibly* with an Acct-Delay-Time. # The server is supposed to conclude that the start time # was "Acct-Delay-Time" seconds in the past. # # The code below creates an explicit start time, which can # then be used in other modules. # # The start time is: NOW - delay - session_length # # update request { # FreeRADIUS-Acct-Session-Start-Time = "%{expr: %l - %{%{Acct-Session-Time}:-0} - %{%{Acct-Delay-Time}:-0}}" # } # # Ensure that we have a semi-unique identifier for every # request, and many NAS boxes are broken. acct_unique # # Look for IPASS-style 'realm/', and if not found, look for # '@realm', and decide whether or not to proxy, based on # that. # # Accounting requests are generally proxied to the same # home server as authentication requests. # IPASS suffix # ntdomain # # Read the 'acct_users' file files } # # Accounting. Log the accounting data. # accounting { # # Create a 'detail'ed log of the packets. # Note that accounting requests which are proxied # are also logged in the detail file. detail # daily # Update the wtmp file # # If you don't use "radlast", you can delete this line. unix # # For Simultaneous-Use tracking. # # Due to packet losses in the network, the data here # may be incorrect. There is little we can do about it. radutmp # sradutmp # Return an address to the IP Pool when we see a stop record. # main_pool # # Log traffic to an SQL database. # # See "Accounting queries" in sql.conf # sql # # If you receive stop packets with zero session length, # they will NOT be logged in the database. The SQL module # will print a message (only in debugging mode), and will # return "noop". # # You can ignore these packets by uncommenting the following # three lines. Otherwise, the server will not respond to the # accounting request, and the NAS will retransmit. # # if (noop) { # ok # } # # Instead of sending the query to the SQL server, # write it into a log file. # # sql_log # Cisco VoIP specific bulk accounting # pgsql-voip # For Exec-Program and Exec-Program-Wait exec # Filter attributes from the accounting response. attr_filter.accounting_response # # See "Autz-Type Status-Server" for how this works. # # Acct-Type Status-Server { # # } } # Session database, used for checking Simultaneous-Use. Either the radutmp # or rlm_sql module can handle this. # The rlm_sql module is *much* faster session { radutmp # # See "Simultaneous Use Checking Queries" in sql.conf # sql } # Post-Authentication # Once we KNOW that the user has been authenticated, there are # additional steps we can take. post-auth { # Get an address from the IP Pool. # main_pool # # If you want to have a log of authentication replies, # un-comment the following line, and the 'detail reply_log' # section, above. reply_log # # After authenticating the user, do another SQL query. # # See "Authentication Logging Queries" in sql.conf # sql # # Instead of sending the query to the SQL server, # write it into a log file. # # sql_log # # Un-comment the following if you have set # 'edir_account_policy_check = yes' in the ldap module sub-section of # the 'modules' section. # # ldap # For Exec-Program and Exec-Program-Wait exec # # Calculate the various WiMAX keys. In order for this to work, # you will need to define the WiMAX NAI, usually via # # update request { # WiMAX-MN-NAI = "%{User-Name}" # } # # If you want various keys to be calculated, you will need to # update the reply with "template" values. The module will see # this, and replace the template values with the correct ones # taken from the cryptographic calculations. e.g. # # update reply { # WiMAX-FA-RK-Key = 0x00 # WiMAX-MSK = "%{EAP-MSK}" # } # # You may want to delete the MS-MPPE-*-Keys from the reply, # as some WiMAX clients behave badly when those attributes # are included. See "raddb/modules/wimax", configuration # entry "delete_mppe_keys" for more information. # # wimax # If there is a client certificate (EAP-TLS, sometimes PEAP # and TTLS), then some attributes are filled out after the # certificate verification has been performed. These fields # MAY be available during the authentication, or they may be # available only in the "post-auth" section. # # The first set of attributes contains information about the # issuing certificate which is being used. The second # contains information about the client certificate (if # available). # # update reply { # Reply-Message += "%{TLS-Cert-Serial}" # Reply-Message += "%{TLS-Cert-Expiration}" # Reply-Message += "%{TLS-Cert-Subject}" # Reply-Message += "%{TLS-Cert-Issuer}" # Reply-Message += "%{TLS-Cert-Common-Name}" # # Reply-Message += "%{TLS-Client-Cert-Serial}" # Reply-Message += "%{TLS-Client-Cert-Expiration}" # Reply-Message += "%{TLS-Client-Cert-Subject}" # Reply-Message += "%{TLS-Client-Cert-Issuer}" # Reply-Message += "%{TLS-Client-Cert-Common-Name}" # } # If the WiMAX module did it's work, you may want to do more # things here, like delete the MS-MPPE-*-Key attributes. # # if (updated) { # update reply { # MS-MPPE-Recv-Key !* 0x00 # MS-MPPE-Send-Key !* 0x00 # } # } # # Access-Reject packets are sent through the REJECT sub-section of the # post-auth section. # # Add the ldap module name (or instance) if you have set # 'edir_account_policy_check = yes' in the ldap module configuration # Post-Auth-Type REJECT { # log failed authentications in SQL, too. # sql attr_filter.access_reject } } # # When the server decides to proxy a request to a home server, # the proxied request is first passed through the pre-proxy # stage. This stage can re-write the request, or decide to # cancel the proxy. # # Only a few modules currently have this method. # pre-proxy { # attr_rewrite # Uncomment the following line if you want to change attributes # as defined in the preproxy_users file. # files # Uncomment the following line if you want to filter requests # sent to remote servers based on the rules defined in the # 'attrs.pre-proxy' file. # attr_filter.pre-proxy # If you want to have a log of packets proxied to a home # server, un-comment the following line, and the # 'detail pre_proxy_log' section, above. # pre_proxy_log } # # When the server receives a reply to a request it proxied # to a home server, the request may be massaged here, in the # post-proxy stage. # post-proxy { # If you want to have a log of replies from a home server, # un-comment the following line, and the 'detail post_proxy_log' # section, above. # post_proxy_log # attr_rewrite # Uncomment the following line if you want to filter replies from # remote proxies based on the rules defined in the 'attrs' file. # attr_filter.post-proxy # # If you are proxying LEAP, you MUST configure the EAP # module, and you MUST list it here, in the post-proxy # stage. # # You MUST also use the 'nostrip' option in the 'realm' # configuration. Otherwise, the User-Name attribute # in the proxied request will not match the user name # hidden inside of the EAP packet, and the end server will # reject the EAP request. # eap # # If the server tries to proxy a request and fails, then the # request is processed through the modules in this section. # # The main use of this section is to permit robust proxying # of accounting packets. The server can be configured to # proxy accounting packets as part of normal processing. # Then, if the home server goes down, accounting packets can # be logged to a local "detail" file, for processing with # radrelay. When the home server comes back up, radrelay # will read the detail file, and send the packets to the # home server. # # With this configuration, the server always responds to # Accounting-Requests from the NAS, but only writes # accounting packets to disk if the home server is down. # # Post-Proxy-Type Fail { # detail # } }

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Authentication and authorization with PAM
by JCA 04 Aug '15

04 Aug '15

I have a Linux L system in which the password authentication is carried out against a remote RADIUS server R by means of PAM in L. This works as expected, but I would like to use this mechanism to do authorization chores, besides the authentication ones. As part of a successful authentication, R will send back to L (in addition to the successful authentication packet) a series of attributes that L will interpret as authorization parameters - e.g. a list of groups that the user that has been authenticated is to belong to. My understanding is that the PAM RADIUS module pam_radius.so is the one that interacts with the RADIUS server, and it therefore behooves this module to interpret the authentication information, and act on it. Looking into the documentation for the current pam_radius.so module, it would seem that it contains no support for this - i.e. in order to accomplish what I am describing I need to develop a PAM RADIUS of my own. Is this correct?

2 3

Can TLS related errors include client identifying info?
by Mohamed Lrhazi 03 Aug '15

03 Aug '15

Hello, Is there a way to tweak the logging to be able to identify the users that are causing these errors: Aug 3 14:57:09 [daemon.debug] radiusd: (1157717) eap_peap: ERROR: TLS_accept: Failed in SSLv3 read client certificate A Aug 3 14:57:09 [daemon.err] radiusd: SSL: SSL_read failed in a system call (-1), TLS session fails. Ideally userids, MAC addresses... could linelog be an option? Thanks a lot, Mohamed.

1 0

System frequently stops responding...
by Mohamed Lrhazi 03 Aug '15

03 Aug '15

Hello, Run into an issue today, which digging in the logs seems to have going on for a while, but somehow became extreme today... Not sure yet what the root cause is.. might not be FreeRADIUS. I have four instances of 3.0.8, running in containers, two per VM. a load balancer routes traffic to the nodes, with username based persistence. We have several Cisco wireless controllers that use this RAIDUS setup.... very frequently, they have been logging that the RADIUS server failed to respond, and log the user name and the station id. I tracked lots of such instances, and found the packets do arrive at the VMs, but no reply is sent out. Sometime later system would respond fine to some other incoming packets! I find nothing in the logs related the failed requests, not from FreeRADIUS and not from iptables... The load on the VMs is constantly close to 0. No RAM issues or any other issues I could see... I doubled the number of FreeRADIUS instances anyway... but the issue persisted. the Cisco's log the errors many times per minute.... I restarted the FreeRADIUS instances few times... to no avail. But then decided to reboot both VMs... and issue seems to have disappeared! At least for now. the uptime on the VMs was 92 days. they are redhat 6.6. any suggestions on how to further debug such behavior, if it were to start again? Thanks a lot, Mohamed.

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[ANN] Redis 3.0 support in v3.1.x
by Arran Cudbard-Bell 31 Jul '15

31 Jul '15

Hi All, v3.1.x now supports Redis cluster natively. In addition to the standard redirect mechanism used by redis-cli, FreeRADIUS also maintains a mapping of key slots to cluster nodes, and will update this when it detects conditions that indicate that a failover has occurred. The code used for Redis cluster and non clustered Redis is identical, for the non clustered solution the cluster is treated as containing only a single node. It's possible start FreeRADIUS against a single clustered node, add that node to a cluster, and have FreeRADIUS dynamically discover and map the cluster, at runtime, without restarting. Redis cluster scales horizontally up to ~1000 nodes, though this implementation only supports 255. If anyone needs the full 1000, open an issue on the GitHub tracker, and we'll make the necessary modifications. Redis cluster is supported by rlm_redis, rlm_rediswho, and rlm_cache_redis. For rlm_redis (which registers the xlat), queries may be prefixed with a '-' to enable READONLY queries against slave nodes. The only current known limitation is that connection pool sharing does not work with redis cluster. This will be addressed in a future commit. Next step is to implement SSL session caching using attributes, this will allow multiple RADIUS servers to share SSL session information, introducing the possibility of FreeRADIUS clusters that can handle multiple millions of EAP-TLS/EAP-TTLS/EAP-PEAP users. -Arran

1 0

session log in SQL
by Khapare Joshi 31 Jul '15

31 Jul '15

Now its time to configure to log into SQL :) Until now we uses cisco wireless controller and only allow two connection for all users. I wanted to implement Simultaneous-user based in student and staff. and want to use sql for it. My users are authenticate against AD (samb +ntml_auth). So here is what I did : 1. Created database radius. 2. Populated admin.sql into the mysql 3. Populated schema.sql into the radius database 4. Enabled sql.conf in /etc/raddb/radius.conf 5. Disabled radutmp and enabled sql in accounting section in /etc/raddb/site-enabled/default 6. So, added DEFAULT Simultaneous-Use := 2 in /etc/raddb/users file for testing 7. restarted radius - try logging few users But I do not see any tables in radius database been updated. I just wanted to use session for the simultaneous user for restrict user. if this works then I can write regex to query LDAP if x is staff or student. Point me if i am doing wrong or some docs where I can see more reading reading reading. K

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ntlm_auth: hex decode of 00 failed
by Scott Pickles 30 Jul '15

30 Jul '15

>>Executing: /usr/bin/ntlm_auth --request-nt-key --username=%{%{Stripped-User-Name}:-%{%{User-Name}:-None}} --domain=%{%{mschap:NT-Domain}:-FESYSTEMSCOM} --challenge=%{%{mschap:Challenge}:-00} --nt-response=%{%{mschap:NT-Response}:-00}:>>(0) ntlm_auth : EXPAND --username=%{%{Stripped-User-Name}:-%{%{User-Name}:-None}}>>(0) ntlm_auth : --> --username=spickles>>(0) ERROR: ntlm_auth : No NT-Domain was found in the User-Name>>(0) ntlm_auth : EXPAND --domain=%{%{mschap:NT-Domain}:-FESYSTEMSCOM}>>(0) ntlm_auth : --> --domain=FESYSTEMSCOM>>(0) ERROR: ntlm_auth : No MS-CHAP-Challenge in the request>>(0) ntlm_auth : EXPAND --challenge=%{%{mschap:Challenge}:-00}>>(0) ntlm_auth : --> --challenge=00>>(0) ERROR: ntlm_auth : No MS-CHAP-Response or MS-CHAP2-Response was found in the request>>(0) ntlm_auth : EXPAND --nt-response=%{%{mschap:NT-Response}:-00}>>(0) ntlm_auth : --> --nt-response=00>>hex decode of 00 failed! (only got 1 bytes) I ultimately want to use FreeRADIUS to authenticate user logins to my Cisco infrastructure, VPN connections to my ASA, and MS-PEAP for WiFi. Currently I'm just trying to run a test connection from my ASA firewall using the RADIUS test built in: >>test aaa-server authorization RADIUS host 172.18.2.100 username spickles I'm failing at the ntlm_auth portion above, and if I'm understanding it correctly it's because the test from the ASA is likely sending something like a pap request as opposed to an mschap? >>ERROR: ntlm_auth : No MS-CHAP-Challenge in the request This is expected and the default is then '00' based on the setting 'ntlm_auth : EXPAND --challenge=%{%{mschap:Challenge}:-00}'. So I guess at this point I'm looking for some guidance on how I can make all of this work because the RADIUS test isn't going to send an MS-CHAP challenge. Do I need to modify the ntlm_auth configuration to include a 'password' option?

2 2

Re: udp sockets and proxy servers
by Sergey Komarov 30 Jul '15

30 Jul '15

Hello, I've tested 3.0.10 with patch issued by Alan. Thanks for attention for the case, but it still have some problems: 1. In case you put Dst-IP-Address, than FR ignores port settings in coa sections of clients (coa server derived from clients.conf). Doesn't matter if I put port 1700 in clients.conf it use 3799. Then I add Dst-IP-Port 1700 and after that it works normally. But... Next point still impact. 2. After 3.0.10 installed udp sockets finishing very quickly and then it dies. Best Regards, Serge Komaroff > Date: Tue, 21 Jul 2015 10:23:43 +0300 > From: Sergey Komarov <sergey.komaroff(a)gmail.com> > To: FreeRadius users mailing list > <freeradius-users(a)lists.freeradius.org> > Subject: Re: udp sockets and proxy servers > Message-ID: > <CAAZqZfDuvfpQM6iERUOfA31X-pwgU=0ZBPxJ7st0K1= > Zkis2qA(a)mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > Hello! > > > > > Hmmm, well that's problematic. Could you open a GitHub issue. > > > > -Arran > > > > Hello Arran. Well, I'm not a developer actually I will try to post it to > GitHub in case my credentials is ok for that... > > > > Date: Mon, 20 Jul 2015 19:48:25 +0200 > > From: Alan DeKok <aland(a)deployingradius.com> > > To: FreeRadius users mailing list > > <freeradius-users(a)lists.freeradius.org> > > Subject: Re: udp sockets and proxy servers > > Message-ID: <56E2A5E4-DFAD-4B47-816E-28CDFF51DACF(a)deployingradius.com> > > Content-Type: text/plain; charset=us-ascii > > > > On Jul 20, 2015, at 7:15 PM, Sergey Komarov <sergey.komaroff(a)gmail.com> > > wrote: > > > I'm tring to run 3.0.9 configuration with about ~1500 clients and home > > > servers (as I have about 1500 WLCs in the network and I try to proxy > CoA > > > packet to WLCs via radius). > > > > > > Radius server tries to open as many sockets as possible doing like > that: > > > > > > Info: ... adding new socket proxy address * port 46527 > > > Info: ... adding new socket proxy address * port 38003 > > > > > > It happens slowly or fast and it depends of load as I see it... And > then > > > after about 256 sockets server quits from running with error: > > > > Is that with TLS? Or TCP? We didn't predict that people would use 256 > > or more clients with CoA and TCP. > > > > But it *should* work for UDP. There's no reason for it to open many > > proxy sockets. It just needs one or two. > > > > Alan DeKok. > > > > Hello Alan! The case is that I'm using UDP only, no any TLS now, just > common pap/sql and Acc Req/Accept/CoA Proxy... SQL sockets is ok and no > overflow there (it even close some connections to DB when don't need it). > But it looks like FR tries to create as many sockets as home servers and it > happen slowly - depends on load. When I limit to 200 home servers - it > stopped to create sockets at number about 153... In case it overcome 256 it > drops soon with that error... > > > Best Regards, Serge Komaroff > > > ------------------------------ > > Subject: Digest Footer > > - > List info/subscribe/unsubscribe? See > http://www.freeradius.org/list/users.html > > ------------------------------ > > End of Freeradius-Users Digest, Vol 123, Issue 76 > ************************************************* >

2 1

is it dangerous to change sql safe_characters ?
by d tbsky 30 Jul '15

30 Jul '15

hi: we are using freeradius 3.0.9. and we want to make the sql accounting data easier to read/process. currently the characters below we may use are escaped by default '\' => for windows account like "domain\user". "+","=" => for base64 encoding these two characters are used is it safe the add these characters to query.conf "safe_characters"? PS: by default the method to escap the "\" character seems not correct. when user use "domain\user" to login, if I check with "radiusd -X", the name sometimes present as 'domain\user', and sometimes present as "domain\\user". but finally when it write to sql, it becomes "domain=5C=5Cuser". I think the correct escaped string should be "domain=5Cuser" ? thanks a lot for help!! Regards, tbskyd

4 7

Fwd: unixODBC Error
by Harvii Dent 30 Jul '15

30 Jul '15

Hello, I've installed FreeRADIUS (3.0.4-6.el7) on CentOS 7 from the repositories with the plan to use unixODBC and FreeTDS to authenticate against a MSSQL database; however, running radiusd -X results in this (similar error when using freeradius-3.0.8-3.fc23): rlm_sql (sql): Driver rlm_sql_unixodbc (module rlm_sql_unixodbc) loaded and linked rlm_sql (sql): Attempting to connect to database "FreeRADIUS" rlm_sql (sql): Initialising connection pool pool { start = 5 min = 4 max = 32 spare = 3 uses = 0 lifetime = 0 cleanup_interval = 30 idle_timeout = 60 retry_delay = 1 spread = no } rlm_sql (sql): Opening additional connection (0) rlm_sql_unixodbc: 01000 [unixODBC][Driver Manager]Can't open lib '/usr/lib64/libtdsodbc.so.0.0.0' : ?w????: undefined symbol: get_vtable rlm_sql_unixodbc: SQL down 08003 [unixODBC][Driver Manager]Connnection does not exist rlm_sql_unixodbc: Can't allocate the statement rlm_sql_unixodbc: Socket destructor called, closing socket rlm_sql (sql): Opening connection failed (0) rlm_sql (sql): Removing connection pool /etc/raddb/mods-enabled/sql[20]: Instantiation failed for module "sql" Other users faced this 'get_vtable' issue but it doesn't seem that anyone found a solution, any help is appreciated. Thanks

4 5