Freeradius authentication question

Le Gal Philippe Philippe.LeGal at emea.eu.int
Fri Jan 20 13:08:59 CET 2006


The Pam radius configuration file on the client machine should be located here: /etc/raddb/server (cf pam radius INSTALL)

I can't see why the radius server can not decrypt the password when I know my shared secret is absolutely identical on the client and on the radius server. 

Anyone ?

Philippe

-----Original Message-----
From:
freeradius-users-bounces+philippe.legal=emea.eu.int at lists.freeradius.org
[mailto:freeradius-users-bounces+philippe.legal=emea.eu.int at lists.freera
dius.org]On Behalf Of Kai Geek
Sent: 20 January 2006 12:00
To: FreeRadius users mailing list
Subject: Re: Freeradius authentication question


Hello,
[root at us067 root]# vi /etc/raddb/server ??

the config file will this be ?
correct directory;

#vi /etc/raddb/clients.conf 

oke.

> ----- Original Message -----
> From: "Le Gal Philippe" <Philippe.LeGal at emea.eu.int>
> To: "FreeRadius users mailing list" <freeradius-users at lists.freeradius.org>
> Subject: Freeradius authentication question 
> Date: Fri, 20 Jan 2006 11:34:51 -0000
> 
> 
> 
> Hi everybody,
> 
> I'm trying to authenticate users login in a machine using ssh. I 
> have configured ssh & PAM on that server to autenticate against the 
> radius server (Redhat Application Server 2.1).
> 
> Please find below the debug of the radius server as well as my conf files.
> 
> The Free radius server says :
> 
> Login incorrect: [test/\010\n\INCORRECT] (from client 
> us067.eudra.org port 1500 cli 192.168.xx.xx)
>    WARNING: Unprintable characters in the password. ?  Double-check 
> the shared secret on the server and the NAS!
> 
> So did I . I checked the secrets on the server and they are *IDENTICAL*...
> 
> I used the NTRadPing utility with exactly the same parameters and 
> it works absolutely fine !
> 
> Thank you for your help !
> 
> my /etc/raddb/server file : (on the client machine) :
> 
> [root at us067 root]# vi /etc/raddb/server
> #  pam_radius_auth configuration file.  Copy to: /etc/raddb/server
> #
> #  For proper security, this file SHOULD have permissions 0600,
> #  that is readable by root, and NO ONE else.  If anyone other than
> #  root can read this file, then they can spoof responses from the server!
> #
> #  There are 3 fields per line in this file.  There may be multiple
> #  lines.  Blank lines or lines beginning with '#' are treated as
> #  comments, and are ignored.  The fields are:
> #
> #  server[:port] secret [timeout]
> #
> #  the port name or number is optional.  The default port name is
> #  "radius", and is looked up from /etc/services The timeout field is
> #  optional.  The default timeout is 3 seconds.
> #
> #  If multiple RADIUS server lines exist, they are tried in order.  The
> #  first server to return success or failure causes the module to return
> #  success or failure.  Only if a server fails to response is it skipped,
> #  and the next server in turn is used.
> #
> #  The timeout field controls how many seconds the module waits before
> #  deciding that the server has failed to respond.
> #
> # server[:port] shared_secret      timeout (s)
> loginhost.eudra.org     philippe123456  1
> #
> # having localhost in your radius configuration is a Good Thing.
> #
> # See the INSTALL file for pam.conf hints.
> 
> 
> clients.conf :
> 
> client us067.eudra.org {
>          secret          = philippe123456
>          shortname       = us067.eudra.org
> }
> 
> 
> [root at us072 raddb]# radiusd -X
> Starting - reading configuration files ...
> reread_config:  reading radiusd.conf
> Config:   including file: /usr/local/etc/raddb/proxy.conf
> Config:   including file: /usr/local/etc/raddb/clients.conf
> Config:   including file: /usr/local/etc/raddb/snmp.conf
> Config:   including file: /usr/local/etc/raddb/eap.conf
> Config:   including file: /usr/local/etc/raddb/sql.conf
>   main: prefix = "/usr/local"
>   main: localstatedir = "/usr/local/var"
>   main: logdir = "/usr/local/var/log/radius"
>   main: libdir = "/usr/local/lib"
>   main: radacctdir = "/usr/local/var/log/radius/radacct"
>   main: hostname_lookups = no
>   main: max_request_time = 30
>   main: cleanup_delay = 5
>   main: max_requests = 1024
>   main: delete_blocked_requests = 0
>   main: port = 0
>   main: allow_core_dumps = no
>   main: log_stripped_names = no
>   main: log_file = "/usr/local/var/log/radius/radius.log"
>   main: log_auth = yes
>   main: log_auth_badpass = yes
>   main: log_auth_goodpass = yes
>   main: pidfile = "/usr/local/var/run/radiusd/radiusd.pid"
>   main: user = "(null)"
>   main: group = "(null)"
>   main: usercollide = no
>   main: lower_user = "no"
>   main: lower_pass = "no"
>   main: nospace_user = "no"
>   main: nospace_pass = "no"
>   main: checkrad = "/usr/local/sbin/checkrad"
>   main: proxy_requests = yes
>   proxy: retry_delay = 5
>   proxy: retry_count = 3
>   proxy: synchronous = no
>   proxy: default_fallback = yes
>   proxy: dead_time = 120
>   proxy: post_proxy_authorize = yes
>   proxy: wake_all_if_all_dead = no
>   security: max_attributes = 200
>   security: reject_delay = 1
>   security: status_server = no
>   main: debug_level = 0
> read_config_files:  reading dictionary
> read_config_files:  reading naslist
> Using deprecated naslist file.  Support for this will go away soon.
> read_config_files:  reading clients
> read_config_files:  reading realms
> radiusd:  entering modules setup
> Module: Library search path is /usr/local/lib
> Module: Loaded exec
>   exec: wait = yes
>   exec: program = "(null)"
>   exec: input_pairs = "request"
>   exec: output_pairs = "(null)"
>   exec: packet_type = "(null)"
> rlm_exec: Wait=yes but no output defined. Did you mean output=none?
> Module: Instantiated exec (exec)
> Module: Loaded expr
> Module: Instantiated expr (expr)
> Module: Loaded PAP
>   pap: encryption_scheme = "crypt"
> Module: Instantiated pap (pap)
> Module: Loaded CHAP
> Module: Instantiated chap (chap)
> Module: Loaded MS-CHAP
>   mschap: use_mppe = yes
>   mschap: require_encryption = no
>   mschap: require_strong = no
>   mschap: with_ntdomain_hack = no
>   mschap: passwd = "(null)"
>   mschap: authtype = "MS-CHAP"
>   mschap: ntlm_auth = "(null)"
> Module: Instantiated mschap (mschap)
> Module: Loaded System
>   unix: cache = no
>   unix: passwd = "(null)"
>   unix: shadow = "(null)"
>   unix: group = "(null)"
>   unix: radwtmp = "/usr/local/var/log/radius/radwtmp"
>   unix: usegroup = no
>   unix: cache_reload = 600
> Module: Instantiated unix (unix)
> Module: Loaded eap
>   eap: default_eap_type = "md5"
>   eap: timer_expire = 60
>   eap: ignore_unknown_eap_types = no
>   eap: cisco_accounting_username_bug = no
> rlm_eap: Loaded and initialized type md5
> rlm_eap: Loaded and initialized type leap
>   gtc: challenge = "Password: "
>   gtc: auth_type = "PAP"
> rlm_eap: Loaded and initialized type gtc
>   mschapv2: with_ntdomain_hack = no
> rlm_eap: Loaded and initialized type mschapv2
> Module: Instantiated eap (eap)
> Module: Loaded preprocess
>   preprocess: huntgroups = "/usr/local/etc/raddb/huntgroups"
>   preprocess: hints = "/usr/local/etc/raddb/hints"
>   preprocess: with_ascend_hack = no
>   preprocess: ascend_channels_per_line = 23
>   preprocess: with_ntdomain_hack = no
>   preprocess: with_specialix_jetstream_hack = no
>   preprocess: with_cisco_vsa_hack = no
> Module: Instantiated preprocess (preprocess)
> Module: Loaded realm
>   realm: format = "suffix"
>   realm: delimiter = "@"
>   realm: ignore_default = no
>   realm: ignore_null = no
> Module: Instantiated realm (suffix)
> Module: Loaded files
>   files: usersfile = "/usr/local/etc/raddb/users"
>   files: acctusersfile = "/usr/local/etc/raddb/acct_users"
>   files: preproxy_usersfile = "/usr/local/etc/raddb/preproxy_users"
>   files: compat = "no"
> Module: Instantiated files (files)
> Module: Loaded Acct-Unique-Session-Id
>   acct_unique: key = "User-Name, Acct-Session-Id, NAS-IP-Address, 
> Client-IP-Address, NAS-Port"
> Module: Instantiated acct_unique (acct_unique)
> Module: Loaded detail
>   detail: detailfile = 
> "/usr/local/var/log/radius/radacct/%{Client-IP-Address}/detail-%Y%m%d"
>   detail: detailperm = 384
>   detail: dirperm = 493
>   detail: locking = no
> Module: Instantiated detail (detail)
> Module: Loaded radutmp
>   radutmp: filename = "/usr/local/var/log/radius/radutmp"
>   radutmp: username = "%{User-Name}"
>   radutmp: case_sensitive = yes
>   radutmp: check_with_nas = yes
>   radutmp: perm = 384
>   radutmp: callerid = yes
> Module: Instantiated radutmp (radutmp)
> Listening on authentication *:1812
> Listening on accounting *:1813
> Ready to process requests.
> rad_recv: Access-Request packet from host 172.16.51.67:2531, id=82, length=89
>          User-Name = "test"
>          User-Password = "\010\n\INCORRECT"
>          NAS-IP-Address = 172.16.51.67
>          NAS-Identifier = "sshd"
>          NAS-Port = 1506
>          NAS-Port-Type = Virtual
>          Service-Type = Authenticate-Only
>          Calling-Station-Id = "192.168.60.76"
>    Processing the authorize section of radiusd.conf
> modcall: entering group authorize for request 0
>    modcall[authorize]: module "preprocess" returns ok for request 0
>    modcall[authorize]: module "chap" returns noop for request 0
>    modcall[authorize]: module "mschap" returns noop for request 0
>      rlm_realm: No '@' in User-Name = "test", looking up realm NULL
>      rlm_realm: No such realm "NULL"
>    modcall[authorize]: module "suffix" returns noop for request 0
>    rlm_eap: No EAP-Message, not doing EAP
>    modcall[authorize]: module "eap" returns noop for request 0
>      users: Matched entry DEFAULT at line 156
>    modcall[authorize]: module "files" returns ok for request 0
> modcall: group authorize returns ok for request 0
>    rad_check_password:  Found Auth-Type System
> auth: type "System"
>    Processing the authenticate section of radiusd.conf
> modcall: entering group authenticate for request 0
> rlm_unix: [test]: invalid password
>    modcall[authenticate]: module "unix" returns reject for request 0
> modcall: group authenticate returns reject for request 0
> auth: Failed to validate the user.
> Login incorrect: [test/\010\n\INCORRECT] (from client 
> us067.eudra.org port 1506 cli 192.168.60.76)
>    WARNING: Unprintable characters in the password. ?  Double-check 
> the shared secret on the server and the NAS!
> Delaying request 0 for 1 seconds
> Finished request 0
> Going to the next request
> --- Walking the entire request list ---
> Waking up in 1 seconds...
> --- Walking the entire request list ---
> Waking up in 1 seconds...
> --- Walking the entire request list ---
> Sending Access-Reject of id 82 to 172.16.51.67:2531
> Waking up in 4 seconds...
> --- Walking the entire request list ---
> Cleaning up request 0 ID 82 with timestamp 43d0c994
> Nothing to do.  Sleeping until we see a request.
> 
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>



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Kai "Ozgur" Geek
Network Engineer
PGP ID: B1B63B6E
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