March 2006 - Freeradius-Users - lists.freeradius.org

connection pool
by Miguel 21 Mar '06

21 Mar '06

Hi, i have configured a connection pool of 200, i think its too much for my application, doing a netstat -an | grep ESTABLISHED it showe mee 200, how can i be sure how many slot of that pool are really used? thanks

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Module not loading
by "Tomás A. Rossi" 21 Mar '06

21 Mar '06

I have something like this on 'radiusd.conf': ... modules{ ... pgping { } ... } ... Where 'rlm_pgping' is a module compiled and installed following the manual. My question is why does it not appear to load (i.e. not showing any messages with 'radiusd -X')? _the module code is on the end of the message_ I have other custom modules that works fine. Am I doing something wrong? On the other hand, I've been playing around with 'radiusd.conf' I've discovered that if I add some random module name in the module instantiation section, radiusd doesn't complain at all about it's non-existence! This is a little inconvenient. Thanks in advance, --- Tomás A. Rossi Ministerio de Economía Proyecto de Informática Buenos Aires, Argentina /* * rlm_pgping.c * * Este módulo se encarga de "pinguear" la base de datos primaria e informa si * la misma está caída (FAIL) o funcionando normalmente (OK). */ #include "autoconf.h" #include "libradius.h" #include <stdio.h> #include <stdlib.h> #include "radiusd.h" #include "modules.h" #include "conffile.h" #include "libpq-fe.h" /* * Estructura para la configuración del módulo. */ typedef struct rlm_pgping_t { char *host; char *dbname; char *user; char *password; char *port; int timeout; } rlm_pgping_t; /* * No hay parámetros de configuración. */ static CONF_PARSER module_config[] = { { "string", PW_TYPE_STRING_PTR, offsetof(rlm_pgping_t,host), NULL, "localhost" }, { "string", PW_TYPE_STRING_PTR, offsetof(rlm_pgping_t,dbname), NULL, "" }, { "string", PW_TYPE_STRING_PTR, offsetof(rlm_pgping_t,user), NULL, "" }, { "string", PW_TYPE_STRING_PTR, offsetof(rlm_pgping_t,password), NULL, "" }, { "string", PW_TYPE_STRING_PTR, offsetof(rlm_pgping_t,port), NULL, "" }, { "integer", PW_TYPE_INTEGER, offsetof(rlm_pgping_t,timeout), NULL, "30" }, { NULL, -1, 0, NULL, NULL } /* end the list */ }; static int mandar_pgping(void *inst, REQUEST *req) { char condata[256]; /* Buffer para guardar los datos de conexión. */ PGconn *con; /* Conexión a la base. */ DEBUG("PGPING: Empieza el modulo"); /*req = req;*/ #define INST ((rlm_pgping_t *)inst) snprintf(condata, sizeof(condata)-1, "host=%s port=%s dbname=%s user=%s " "password='%s' connect_timeout=%d", INST->host, INST->port, INST->dbname, INST->user, INST->password, INST->timeout); con = PQconnectdb(condata); DEBUG("Intentando conectar a la base primaria con datos de conexión: '%s'", condata); if (PQstatus(con) == CONNECTION_BAD) { radlog(L_AUTH, "Falló la conexión a la base primaria."); return RLM_MODULE_FAIL; } return RLM_MODULE_OK; } static int pgping_init(void) { return 0; } /* * Hay que leer los parámetros de configuración para la instancia. */ static int pgping_instantiate(CONF_SECTION *conf, void **instance) { rlm_pgping_t *conf_data; /* * Pedir memoria para los parámetros de configuración. */ conf_data = rad_malloc(sizeof(*conf_data)); if (!conf_data) { return RLM_MODULE_FAIL; } memset(conf_data, 0, sizeof(*conf_data)); /* * Si falla el "parseo" del archivo de configuración para el módulo, CHAU!. */ if (cf_section_parse(conf, conf_data, module_config) < 0) { free(conf_data); return RLM_MODULE_FAIL; } *instance = conf_data; return RLM_MODULE_OK; } static int pgping_detach(void *inst) { free(INST->host); free(INST->port); free(INST->dbname); free(INST->user); free(INST->password); free(inst); return 0; } /* * The module name should be the only globally exported symbol. * That is, everything else should be 'static'. * * If the module needs to temporarily modify it's instantiation * data, the type should be changed to RLM_TYPE_THREAD_UNSAFE. * The server will then take care of ensuring that the module * is single-threaded. */ module_t rlm_pgping = { "pgping", RLM_TYPE_THREAD_SAFE, /* type */ pgping_init, /* initialization */ pgping_instantiate, /* instantiation */ { mandar_pgping, /* authentication */ mandar_pgping, /* authorization */ mandar_pgping, /* preaccounting */ mandar_pgping, /* accounting */ NULL, /* checksimul */ NULL, /* pre-proxy */ NULL, /* post-proxy */ NULL /* post-auth */ }, pgping_detach, /* detach */ NULL, /* destroy */ };

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Duplicate Accounting Start Packets
by Gunther 21 Mar '06

21 Mar '06

Due to some network problems today, my FreeRadius 1.1.0 server and NAS (wrt54g+Chilli) had problems with duplicate accounting packets. The NAS sent a Start packet, the reply from the radius server did not reach and the NAS sent it again. I got up to 3 identical rows in the radacct table. To avoid this I changed the 'AcctUniqueId' column to UNIQUE and it seems to work fine. I just get an error message in my debug log and instead of an INSERT an UPDATE is done. Tue Mar 21 04:36:46 2006 : Debug: rlm_sql_mysql: query: INSERT into Tue Mar 21 04:36:46 2006 : Debug: rlm_sql_mysql: MYSQL check_error: 1062 received Tue Mar 21 04:36:46 2006 : Error: rlm_sql (sql): Couldn't insert SQL accounting START record - Duplicate entry 'af40ee210a7c0400' for key 2 Tue Mar 21 04:36:46 2006 : Debug: radius_xlat: 'UPDATE ... That is exactly what I need. If the Start packet is able to write 3 identical rows, all Interim-Updates are written to the 3 rows. That means my prepaid cards are running off the time three times faster. I also tried ... INSERT (.....) ON DUPLICATE KEY UPDATE ...., but it seems not to be necessary. Are there any implications setting the 'AcctUniqueId' column to UNIQUE? Gunther

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Associating username to a specific NAS only
by Alex M 20 Mar '06

20 Mar '06

Is it possible to set directives for some users so that they only can login to the specific NAS (by the NAS Called Station Id [NAS MAC Address])? Thanks!

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Authentication problem if CHAP is not used
by Alex M 20 Mar '06

20 Mar '06

Hi, I have a problem; I always get Access Reject saying that password is invalid. But when I'm using NTRadPing Test Utility, the same username and password works fine if I check to use CHAP, but when the CHAP check box is not selected then I'm getting the same problem as I have with my NAS. So can some one tell me how to make FreeRadius work so that if I'm using NTRadPing without CHAP it would still work! Thanks!!!

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pppoe+mysql+Framed-IP-Address
by Norbert Grochal 20 Mar '06

20 Mar '06

I have just run pppoe server with freeradius pppeo user radius.so and radattr.so modules It works ok, but clients gets 'random' IP addreses... I need static IP (like that in /etc/ppp/chap-secrets last column). I try to add 1 record to my mysql, so I have: mysql> SELECT id, UserName, Attribute, Value, op FROM radcheck WHERE Username = 'norbert' ORDER BY id -> ; +-----+----------+-------------------+---------------+----+ | id | UserName | Attribute | Value | op | +-----+----------+-------------------+---------------+----+ | 77 | norbert | User-Password | xxxxxxxx | == | | 258 | norbert | Framed-IP-Address | 82.177.xx.yy | := | +-----+----------+-------------------+---------------+----+ but I still gets IP addresses like 10.67.15.1 ..., not 82.177.xx.yy my example access-request contains Framed-Protocol = PPP: Packet-Type = Access-Request Fri Mar 17 15:25:22 2006 Service-Type = Framed-User Framed-Protocol = PPP User-Name = "norbert" CHAP-Challenge = 0x4aaccdf7f520730e84f58bc4018c04217b97 CHAP-Password = 0xb6fe48120b0aed82ffdb4d782f3b51cd6a NAS-IP-Address = 127.0.0.1 NAS-Port = 0 Client-IP-Address = 10.10.10.248 What I should do? norbert

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Proxy Question (default_fallback)
by christian meutes 20 Mar '06

20 Mar '06

Hello list, i got a proxy configuration in which all auth requests for a specific realm is proxied to another radius server. The problem is that if this radius server isnt reachable the server is marked as dead and every further auth request is sucessfully authenticated locally in cause of a user default accept configuration. In proxy.conf i have set for the proxy realm a default_fallback=no, but this doesnt help. Anybody with an idea why this is happening? I dont want that the auth requests are tried locally if the real radius server isnt answering. best regards, Christian Meutes systems engineer -- claranet gmbh internet service provider tel +49 (0) 69 - 40 80 18 - 300 email: christian.meutes(a)de.clara.net http://www.claranet.de/

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Backend Retry option
by Craig T. Hancock 20 Mar '06

20 Mar '06

When configuring your backend authentication and authorization system how does the retry option work. What I want to know is when connecting to the backend server and if it fails to connect given a specified time does freeradius cache the IP address after the first DNS lookup of the. server DNS name specified in the radiusd.conf file. Or does it attempt to do a DNS lookup on the server IP address on each retry. I am trying to investigate the possibility of load balancing my authentication backend through Round Robin DNS. -- ****************************************************** Craig T. Hancock Systems Engineer, Infrastructure Services Office of Information Technology University of Notre Dame ******************************************************

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Exec program debugging.
by Eliot, Wireless and Server Administrator, Great Lakes Internet 20 Mar '06

20 Mar '06

I am trying to execute a program in the post-proxy section on Access-Accept packets to bring up bandwidth management for a user when they log in: (radiusd.conf) exec bwup { wait = no; program = "/etc/raddb/bwlimit start %{User-Name} %{Calling-Station-Id} %{Tunnel-Private-Group-Id:0} %{NAS-Port} %{GLI-Rx-Data-Rate} %{GLI-Tx-Data-Rate}" input_pairs = reply packet_type = Access-Accept output = none } post-proxy { # post_proxy_log # attr_rewrite # attr_filter exec eap } However, the exec call keeps failing when called from inside radiusd -X: Ready to process requests. rad_recv: Access-Request packet from host xxx.xxx.6.99:1645, id=3, length=128 User-Name = "" Framed-MTU = 1400 Called-Station-Id = "00-13-19-36-C4-52" Calling-Station-Id = "00-13-D3-67-D7-05" Service-Type = Login-User Message-Authenticator = 0x43483d78f3b3f25bcb7657f1522050ef EAP-Message = 0x0202000501 NAS-Port-Type = Wireless-802.11 NAS-Port = 262 NAS-IP-Address = xxx.xxx.6.99 NAS-Identifier = "xxxx-Ch11" 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 "mschap" returns noop for request 0 rlm_realm: No '@' in User-Name = "", looking up realm NULL rlm_realm: Found realm "NULL" rlm_realm: Adding Stripped-User-Name = "" rlm_realm: Proxying request from user to realm NULL rlm_realm: Adding Realm = "NULL" rlm_realm: Preparing to proxy authentication request to realm "NULL" modcall[authorize]: module "suffix" returns updated for request 0 rlm_eap: Request is supposed to be proxied to Realm NULL. Not doing EAP. modcall[authorize]: module "eap" returns noop for request 0 modcall: group authorize returns updated for request 0 Sending Access-Request of id 0 to xxx.xxx.178.13:1645 User-Name = "" Framed-MTU = 1400 Called-Station-Id = "00-13-19-36-C4-52" Calling-Station-Id = "00-13-D3-67-D7-05" Service-Type = Login-User Message-Authenticator = 0x00000000000000000000000000000000 EAP-Message = 0x0202000501 NAS-Port-Type = Wireless-802.11 NAS-Port = 262 NAS-IP-Address = xxx.xxx.6.99 NAS-Identifier = "xxxx-Ch11" Proxy-State = 0x33 --- Walking the entire request list --- Waking up in 6 seconds... rad_recv: Access-Challenge packet from host xxx.xxx.178.13:1645, id=0, length=80 Proxy-State = 0x33 Session-Timeout = 30 EAP-Message = 0x010300061920 State = 0x1cc30355000001370001d819b406000000034b872b6f01 Message-Authenticator = 0x2153f90d4c19a27ae054f7f297611c86 Processing the post-proxy section of radiusd.conf modcall: entering group post-proxy for request 0 rlm_exec (exec): We require a program to execute modcall[post-proxy]: module "exec" returns fail for request 0 modcall: group post-proxy returns fail for request 0 Going to the next request --- Walking the entire request list --- Waking up in 31 seconds... But, if I take the values from a valid Access-Accept packet for the attributes listed above, the file executes correctly with no errors: wireless-r1 raddb # su - radiusd radiusd@wireless-r1 ~ $ /etc/raddb/bwlimit start egable 00:a0:12:34:56:78 3 7 1024 512 radiusd@wireless-r1 ~ $ /etc/raddb/bwlimit stop egable radiusd@wireless-r1 ~ $ exit logout wireless-r1 raddb # All of my rules get added correctly when issuing a start command and they get removed correctly when issuing the stop command, but only if I issue the commands from the command line. If I add more Xs to the -X, it still doesn't tell me why it is failing (what the specific error message is): Mon Mar 20 13:32:45 2006 : Debug: Processing the post-proxy section of radiusd.conf Mon Mar 20 13:32:45 2006 : Debug: modcall: entering group post-proxy for request 0 Mon Mar 20 13:32:45 2006 : Debug: modsingle[post-proxy]: calling exec (rlm_exec) for request 0 Mon Mar 20 13:32:45 2006 : Error: rlm_exec (exec): We require a program to execute Mon Mar 20 13:32:45 2006 : Debug: modsingle[post-proxy]: returned from exec (rlm_exec) for request 0 Mon Mar 20 13:32:45 2006 : Debug: modcall[post-proxy]: module "exec" returns fail for request 0 Mon Mar 20 13:32:45 2006 : Debug: modcall: group post-proxy returns fail for request 0 Mon Mar 20 13:32:45 2006 : Debug: Going to the next request Mon Mar 20 13:32:45 2006 : Debug: rl_next: returning NULL Mon Mar 20 13:32:45 2006 : Debug: Waking up in 6 seconds... I am assuming I just have the configuration for this set up wrong or something. Obviously, the Access-Accept packet is not yet coming back because the first Access-Challenge hasn't even been passed on to the AP yet. So, I'm not sure why the post-proxy section even wants to fire the program at this point in the authentication process. Does anyone know what I did wrong? Thanks. Eliot Gable Certified Wireless Network Administrator (CWNA) Certified Wireless Security Professional (CWSP) Cisco Certified Network Associate (CCNA) CompTIA Security+ Certified CompTIA Network+ Certified Network and Systems Administrator Great Lakes Internet, Inc. 112 North Howard Croswell, MI 48422 (810) 679-3395 (877) 558-8324 Now offering Broadband Wireless Internet access in Croswell, Lexington, Brown City, Yale, and Sandusky. Call for details.

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Backup/Primary Radius Config
by Maqbool Hashim 20 Mar '06

20 Mar '06

Hi, I have two radius servers one primary and one backup one, on different ip addresses. They both have a mysql backend which runs on the same physical machine. I need the sql database and radius configuration files to be synchronised periodically (probably every 24hours). I guess this is a common setup, so I'd appreciate some ideas as to the best way to achieve this? Thanks -- ------------------------------------------------------- Sohonet ltd http://www.sohonet.co.uk Taking digital sound and vision to the world since 1995 Tel:+44(0)20 7292 6900 Fax:+44(0)20 7292 6901 Sup:+44(0)20 7292 6909 Email:support@sohonet.co.uk -------------------------------------------------------

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