Hi All,

I want to use FreeRadius to administer network equipement. I use also OpenLDAP to stock information about users. FreeRADIUS and OpenLDAP are installed on the same server FreeBSD 7.0.

I contact a Network equipement (like catalyst cisco 2950 v12.1) with putty (ssh/telnet).

To resume :

Windows XP -> ssh or telnet -> Cisco 2950 (client radius/authenticator/NAS) -> EAPoRadius (I suppose) -> FreeRADIUS & OpenLDAP

For the moment, I don’t install/configure supplicant on the Windows XP, I don’t know if it’s require because I don’t want to use FreeRADIUS to auhtenticate my Windows session. I have an active directory to do this.

I configure slapd.conf, radius.conf, clients.conf, module ldap etc … and it’s works. And now I would like to add some check-item like NAS-IP-Address and Caliing-Station-ID. But I don’t succeed :s, I use checkval to do this.

I have 2 questions :

- Why my calling-station-id in the request is a IP and not a MAC ?

- When I authenticate on the cisco 2950, I have in my log « rlm_checkval: Item Name: NAS-IP-Address, Value: À¨ » instead of 192.168.0.50, what is the problem ???

I think I have numerous problem, If you see one of them, could you inform me ? I am a novice with freeradius (and openldap also :s ). I could give you all information you need to help me to fix my problem.

Thanks for your help,

Regards

Francçois MEHAULT

On my cisco 2950 :

aaa new-model

aaa authentication login default local group radius

aaa authorization exec default group radius local

aaa authorization network default group radius

My ldap.attrmap :

checkItem       Calling-Station-Id              radiusCallingStationId

checkItem       NAS-IP-Address                  radiusNASIpAddress

Extract of my openldap :

dn: cn=Francois MEHAULT,ou=Utilisateurs,dc=netplus,dc=fr
givenName:: RnJhbsOnb2lz
sn: MEHAULT
uid: fmehault
cn: Francois MEHAULT
homeDirectory: /home/admins/fmehault
loginShell: /usr/local/bin/zsh
gidNumber: 1203
uidNumber: 1203
objectClass: inetOrgPerson
objectClass: posixAccount
objectClass: top
objectClass: radiusprofile
radiusGroupName: stagiaire
radiusCallingStationId: 192.168.0.80   -> I put a IP address and not a Mac address because in the request it’s a IP and not a mac, I don’t know why…
radiusNASIpAddress: 192.168.0.60   -> in fact, the NAS IP is 192.168.0.50, but I put .60 to have Access-Reject
userPassword: {SSHA}tOoPUvtVW5O3+StoxScmQLiGFTO5l/+z

<12:34>[labobe2:~]# radiusd -X

FreeRADIUS Version 2.1.4, for host i386-portbld-freebsd7.0, built on Apr 16 2009 at 12:03:36

Copyright (C) 1999-2008 The FreeRADIUS server project and contributors.

There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A

[…]

radiusd: #### Loading Clients ####

 client 192.168.0.50 {

        require_message_authenticator = no

        secret = "cherche"

        shortname = "swlabo"

        nastype = "cisco"

 }

radiusd: #### Instantiating modules ####

[…]

 modules {

 Module: Checking authenticate {...} for more modules to load

 Module: Linked to module rlm_ldap

 Module: Instantiating ldap

  ldap {

        server = "127.0.0.1"

        port = 389

        password = "secret"

        identity = "cn=root,dc=netplus,dc=fr"

        net_timeout = 1

        timeout = 4

        timelimit = 3

        tls_mode = no

        start_tls = no

        tls_require_cert = "allow"

   tls {

        start_tls = no

        require_cert = "allow"

   }

        basedn = "dc=netplus,dc=fr"

        filter = "(uid=%{Stripped-User-Name:-%{User-Name}})"

        base_filter = "(objectclass=radiusprofile)"

        auto_header = no

        access_attr_used_for_allow = yes

        groupname_attribute = "cn"

        groupmembership_filter = "(|(&(objectClass=GroupOfNames)(member=%{control:Ldap-UserDn}))(&(objectClass=GroupOfUniqueNames)(uniquemember=%{control:Ldap-UserDn})))"

        groupmembership_attribute = "radiusGroupName"

        dictionary_mapping = "/usr/local/etc/raddb/ldap.attrmap"

        ldap_debug = 0

        ldap_connections_number = 5

        compare_check_items = no

        do_xlat = yes

        set_auth_type = yes

  }

rlm_ldap: Registering ldap_groupcmp for Ldap-Group

[…]

rlm_ldap: LDAP radiusVSA mapped to RADIUS Cisco-AVPair

conns: 0x2852c240

 Module: Checking authorize {...} for more modules to load

 Module: Linked to module rlm_preprocess

 Module: Instantiating preprocess

  preprocess {

        huntgroups = "/usr/local/etc/raddb/huntgroups"

        hints = "/usr/local/etc/raddb/hints"

        with_ascend_hack = no

        ascend_channels_per_line = 23

        with_ntdomain_hack = no

        with_specialix_jetstream_hack = no

        with_cisco_vsa_hack = no

        with_alvarion_vsa_hack = no

  }

Module: Linked to module rlm_checkval

 Module: Instantiating station-check

  checkval station-check {

        item-name = "Calling-Station-Id"

        check-name = "Calling-Station-Id"

        data-type = "string"

        notfound-reject = no

  }

rlm_checkval: Registered name Calling-Station-Id for attribute 31

 Module: Instantiating nas-check

  checkval nas-check {

        item-name = "NAS-IP-Address"

        check-name = "NAS-IP-Address"

        data-type = "ipaddr"

        notfound-reject = no

  }

rlm_checkval: Registered name NAS-IP-Address for attribute 4

 Module: Checking preacct {...} for more modules to load

 Module: Linked to module rlm_acct_unique

 Module: Instantiating acct_unique

  acct_unique {

        key = "User-Name, Acct-Session-Id, NAS-IP-Address, Client-IP-Address, NAS-Port"

  }

 Module: Checking accounting {...} for more modules to load

 Module: Linked to module rlm_detail

[…]

Then I launch my putty and log on the cisco :

rad_recv: Access-Request packet from host 192.168.0.50 port 1812, id=117, length=80

        NAS-IP-Address = 192.168.0.50

        NAS-Port = 1

        NAS-Port-Type = Virtual

        User-Name = "fmehault"

        Calling-Station-Id = "192.168.0.80"      à  it’s not a MAC address, why ???

        User-Password = "toto"

+- entering group authorize {...}

++[preprocess] returns ok

[…]

 [ldap] WARNING: Deprecated conditional expansion ":-".  See "man unlang" for details

[ldap]  expand: (uid=%{Stripped-User-Name:-%{User-Name}}) -> (uid=fmehault)

[ldap]  expand: dc=netplus,dc=fr -> dc=netplus,dc=fr

rlm_ldap: ldap_get_conn: Checking Id: 0

rlm_ldap: ldap_get_conn: Got Id: 0

rlm_ldap: performing search in dc=netplus,dc=fr, with filter (uid=fmehault)

rlm_ldap: performing search in cn=stagiaire,ou=Profiles,dc=netplus,dc=fr, with filter (objectclass=radiusprofile)

rlm_ldap: radiusServiceType -> Service-Type = NAS-Prompt-User

[ldap] looking for check items in directory...

rlm_ldap: radiusNASIpAddress -> NAS-IP-Address == 192.168.0.60

rlm_ldap: radiusCallingStationId -> Calling-Station-Id == "192.168.0.80"

[ldap] looking for reply items in directory...

WARNING: No "known good" password was found in LDAP.  Are you sure that the user is configured correctly?

[ldap] Setting Auth-Type = LDAP

[ldap] user fmehault authorized to use remote access

rlm_ldap: ldap_release_conn: Release Id: 0

++[ldap] returns ok

rlm_checkval: Item Name: Calling-Station-Id, Value: 192.168.0.80

rlm_checkval: Value Name: Calling-Station-Id, Value: 192.168.0.80

++[station-check] returns ok

rlm_checkval: Item Name: NAS-IP-Address, Value: À¨     à what is the problem ???

rlm_checkval: Value Name: NAS-IP-Address, Value: 192.168.0.60   (I put 192.168.0.60 instead of 192.168.0.50 to be reject )

[…]

Sending Access-Accept of id 117 to 192.168.0.50 port 1812

        Reply-Message = "Utilisateur: fmehault, group: Stagiaire"

        Service-Type = NAS-Prompt-User

Finished request 0.

Going to the next request

Waking up in 4.9 seconds.

Cleaning up request 0 ID 117 with timestamp +237

Ready to process requests.