auth required pam_yubico.so authfile=/etc/freeradius/yubikey id=16 debug

/etc/pam.d/radiusd

auth required pam_yubico.so authfile=/etc/freeradius/yubikey id=16 debug
@include common-auth
@include common-account
@include common-password
@include common-session

    auth         required       pam_yubico.so authfile=/etc/yubikeyid id=16 debug
    auth         include        system-auth
    account      required       pam_nologin.so
    account      include        system-auth
    password     include        system-auth
    session      include        system-auth

nslu2:~# radtest admin <plaintext password removed> 127.0.0.1 0 testing123
Sending Access-Request of id 238 to 127.0.0.1 port 1812
        User-Name = "admin"
        User-Password = "<plaintext password removed>"
        NAS-IP-Address = 192.168.3.77
        NAS-Port = 0
rad_recv: Access-Accept packet from host 127.0.0.1 port 1812, id=238, length=26
        Service-Type = NAS-Prompt-User
nslu2:~#

nslu2:~# radtest admin <plaintext password removed>cccccccjfcevejkdklbbrfcrurvbireggknbcckevgvf 127.0.0.1 0 testing123
Sending Access-Request of id 17 to 127.0.0.1 port 1812
        User-Name = "admin"
        User-Password = "<plaintext password removed>cccccccjfcevejkdklbbrfcrurvbireggknbcckevgvf"
        NAS-IP-Address = 192.168.3.77
        NAS-Port = 0
rad_recv: Access-Reject packet from host 127.0.0.1 port 1812, id=17, length=20
nslu2:~#

FreeRADIUS Version 2.0.4, for host arm-unknown-linux-gnueabi, built on Sep  8 2008 at 02:43:37
Copyright (C) 1999-2008 The FreeRADIUS server project and contributors.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
You may redistribute copies of FreeRADIUS under the terms of the
GNU General Public License.
Starting - reading configuration files ...
including configuration file /etc/freeradius/radiusd.conf
including configuration file /etc/freeradius/proxy.conf
including configuration file /etc/freeradius/clients.conf
including configuration file /etc/freeradius/snmp.conf
including configuration file /etc/freeradius/eap.conf
including configuration file /etc/freeradius/policy.conf
including files in directory /etc/freeradius/sites-enabled/
including configuration file /etc/freeradius/sites-enabled/default
including configuration file /etc/freeradius/sites-enabled/inner-tunnel
including dictionary file /etc/freeradius/dictionary
main {
        prefix = "/usr"
        localstatedir = "/var"
        logdir = "/var/log/freeradius"
        libdir = "/usr/lib/freeradius"
        radacctdir = "/var/log/freeradius/radacct"
        hostname_lookups = no
        max_request_time = 30
        cleanup_delay = 5
        max_requests = 1024
        allow_core_dumps = no
        pidfile = "/var/run/freeradius/freeradius.pid"
        user = "root"
        group = "root"
        checkrad = "/usr/sbin/checkrad"
        debug_level = 0
        proxy_requests = yes
 security {
        max_attributes = 200
        reject_delay = 1
        status_server = yes
 }
}
 client localhost {
        ipaddr = 127.0.0.1
        require_message_authenticator = no
        secret = "testing123"
        nastype = "other"
 }
radiusd: #### Loading Realms and Home Servers ####
 proxy server {
        retry_delay = 5
        retry_count = 3
        default_fallback = no
        dead_time = 120
        wake_all_if_all_dead = no
 }
 home_server localhost {
        ipaddr = 127.0.0.1
        port = 1812
        type = "auth"
        secret = "testing123"
        response_window = 20
        max_outstanding = 65536
        zombie_period = 40
        status_check = "status-server"
        ping_check = "none"
        ping_interval = 30
        check_interval = 30
        num_answers_to_alive = 3
        num_pings_to_alive = 3
        revive_interval = 120
        status_check_timeout = 4
 }
 home_server_pool my_auth_failover {
        type = fail-over
        home_server = localhost
 }
 realm example.com {
        auth_pool = my_auth_failover
 }
 realm LOCAL {
 }
radiusd: #### Instantiating modules ####
 instantiate {
 Module: Linked to module rlm_exec
 Module: Instantiating exec
  exec {
        wait = yes
        input_pairs = "request"
        shell_escape = yes
  }
 Module: Linked to module rlm_expr
 Module: Instantiating expr
 Module: Linked to module rlm_expiration
 Module: Instantiating expiration
  expiration {
        reply-message = "Password Has Expired  "
  }
 Module: Linked to module rlm_logintime
 Module: Instantiating logintime
  logintime {
        reply-message = "You are calling outside your allowed timespan  "
        minimum-timeout = 60
  }
 }
radiusd: #### Loading Virtual Servers ####
server inner-tunnel {
 modules {
 Module: Checking authenticate {...} for more modules to load
 Module: Linked to module rlm_pap
 Module: Instantiating pap
  pap {
        encryption_scheme = "auto"
        auto_header = no
  }
 Module: Linked to module rlm_chap
 Module: Instantiating chap
 Module: Linked to module rlm_mschap
 Module: Instantiating mschap
  mschap {
        use_mppe = yes
        require_encryption = no
        require_strong = no
        with_ntdomain_hack = no
  }
 Module: Linked to module rlm_unix
 Module: Instantiating unix
  unix {
        radwtmp = "/var/log/freeradius/radwtmp"
  }
 Module: Linked to module rlm_eap
 Module: Instantiating eap
  eap {
        default_eap_type = "md5"
        timer_expire = 60
        ignore_unknown_eap_types = no
        cisco_accounting_username_bug = no
  }
 Module: Linked to sub-module rlm_eap_md5
 Module: Instantiating eap-md5
 Module: Linked to sub-module rlm_eap_leap
 Module: Instantiating eap-leap
 Module: Linked to sub-module rlm_eap_gtc
 Module: Instantiating eap-gtc
   gtc {
        challenge = "Password: "
        auth_type = "PAP"
   }
rlm_eap: Ignoring EAP-Type/tls because we do not have OpenSSL support.
rlm_eap: Ignoring EAP-Type/ttls because we do not have OpenSSL support.
rlm_eap: Ignoring EAP-Type/peap because we do not have OpenSSL support.
 Module: Linked to sub-module rlm_eap_mschapv2
 Module: Instantiating eap-mschapv2
   mschapv2 {
        with_ntdomain_hack = no
   }
 Module: Checking authorize {...} for more modules to load
 Module: Linked to module rlm_realm
 Module: Instantiating suffix
  realm suffix {
        format = "suffix"
        delimiter = "@"
        ignore_default = no
        ignore_null = no
  }
 Module: Linked to module rlm_files
 Module: Instantiating files
  files {
        usersfile = "/etc/freeradius/users"
        acctusersfile = "/etc/freeradius/acct_users"
        preproxy_usersfile = "/etc/freeradius/preproxy_users"
        compat = "no"
  }
 Module: Checking session {...} for more modules to load
 Module: Linked to module rlm_radutmp
 Module: Instantiating radutmp
  radutmp {
        filename = "/var/log/freeradius/radutmp"
        username = "%{User-Name}"
        case_sensitive = yes
        check_with_nas = yes
        perm = 384
        callerid = yes
  }
 Module: Checking post-proxy {...} for more modules to load
 Module: Checking post-auth {...} for more modules to load
 Module: Linked to module rlm_attr_filter
 Module: Instantiating attr_filter.access_reject
  attr_filter attr_filter.access_reject {
        attrsfile = "/etc/freeradius/attrs.access_reject"
        key = "%{User-Name}"
  }
 }
}
server {
 modules {
 Module: Checking authenticate {...} for more modules to load
 Module: Linked to module rlm_pam
 Module: Instantiating pam
  pam {
        pam_auth = "radiusd"
  }
 Module: Checking authorize {...} for more modules to load
 Module: Linked to module rlm_preprocess
 Module: Instantiating preprocess
  preprocess {
        huntgroups = "/etc/freeradius/huntgroups"
        hints = "/etc/freeradius/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: 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
 Module: Instantiating detail
  detail {
        detailfile = "/var/log/freeradius/radacct/%{Client-IP-Address}/detail-%Y%m%d"
        header = "%t"
        detailperm = 384
        dirperm = 493
        locking = no
        log_packet_header = no
  }
 Module: Instantiating attr_filter.accounting_response
  attr_filter attr_filter.accounting_response {
        attrsfile = "/etc/freeradius/attrs.accounting_response"
        key = "%{User-Name}"
  }
 Module: Checking session {...} for more modules to load
 Module: Checking post-proxy {...} for more modules to load
 Module: Checking post-auth {...} for more modules to load
 }
}
radiusd: #### Opening IP addresses and Ports ####
listen {
        type = "auth"
        ipaddr = *
        port = 0
}
listen {
        type = "acct"
        ipaddr = *
        port = 0
}
main {
        snmp = no
        smux_password = ""
        snmp_write_access = no
}
Listening on authentication address * port 1812
Listening on accounting address * port 1813
Listening on proxy address * port 1814
Ready to process requests.
rad_recv: Access-Request packet from host 127.0.0.1 port 56228, id=238, length=57
        User-Name = "admin"
        User-Password = "<plaintext password removed>"
        NAS-IP-Address = 192.168.3.77
        NAS-Port = 0
+- entering group authorize
++[preprocess] returns ok
++[chap] returns noop
++[mschap] returns noop
    rlm_realm: No '@' in User-Name = "admin", looking up realm NULL
    rlm_realm: No such realm "NULL"
++[suffix] returns noop
  rlm_eap: No EAP-Message, not doing EAP
++[eap] returns noop
++[unix] returns updated
    users: Matched entry admin at line 52
++[files] returns ok
++[expiration] returns noop
++[logintime] returns noop
++[pap] returns updated
  rad_check_password:  Found Auth-Type
auth: type "PAP"
+- entering group PAP
rlm_pap: login attempt with password "<plaintext password removed>"
rlm_pap: Using CRYPT encryption.
rlm_pap: User authenticated successfully
++[pap] returns ok
Login OK: [admin/<plaintext password removed>] (from client localhost port 0)
+- entering group post-auth
++[exec] returns noop
Sending Access-Accept of id 238 to 127.0.0.1 port 56228
        Service-Type = NAS-Prompt-User
Finished request 0.
Going to the next request
Waking up in 4.9 seconds.
Cleaning up request 0 ID 238 with timestamp +26
Ready to process requests.
rad_recv: Access-Request packet from host 127.0.0.1 port 39305, id=17, length=105
        User-Name = "admin"
        User-Password = "<plaintext password removed>cccccccjfcevejkdklbbrfcrurvbireggknbcckevgvf"
        NAS-IP-Address = 192.168.3.77
        NAS-Port = 0
+- entering group authorize
++[preprocess] returns ok
++[chap] returns noop
++[mschap] returns noop
    rlm_realm: No '@' in User-Name = "admin", looking up realm NULL
    rlm_realm: No such realm "NULL"
++[suffix] returns noop
  rlm_eap: No EAP-Message, not doing EAP
++[eap] returns noop
++[unix] returns updated
    users: Matched entry admin at line 52
++[files] returns ok
++[expiration] returns noop
++[logintime] returns noop
++[pap] returns updated
  rad_check_password:  Found Auth-Type
auth: type "PAP"
+- entering group PAP
rlm_pap: login attempt with password "<plaintext password removed>cccccccjfcevejkdklbbrfcrurvbireggknbcckevgvf"
rlm_pap: Using CRYPT encryption.
rlm_pap: Passwords don't match
++[pap] returns reject
auth: Failed to validate the user.
Login incorrect (rlm_pap: CRYPT password check failed): [admin/<plaintext password removed>cccccccjfcevejkdklbbrfcrurvbireggknbcckevgvf] (from client localhost port 0)
  Found Post-Auth-Type Reject
+- entering group REJECT
        expand: %{User-Name} -> admin
 attr_filter: Matched entry DEFAULT at line 11
++[attr_filter.access_reject] returns updated
Delaying reject of request 1 for 1 seconds
Going to the next request
Waking up in 0.9 seconds.
Sending delayed reject for request 1
Sending Access-Reject of id 17 to 127.0.0.1 port 39305
Waking up in 4.9 seconds.
Cleaning up request 1 ID 17 with timestamp +545
Ready to process requests.

Change "DEFAULT Auth-Type = System" to "DEFAULT Auth-Type = pam" for using  PAM modules for user authentication

nslu2:/etc/pam.d# tail /var/log/auth.log
Mar 18 15:49:50 nslu2 freeradius: PAM unable to dlopen(/lib/security/pam_yubico.so): /lib/security/pam_yubico.so: undefined symbol: pam_set_data
Mar 18 15:49:50 nslu2 freeradius: PAM adding faulty module: /lib/security/pam_yubico.so
Mar 18 15:49:59 nslu2 freeradius: PAM unable to dlopen(/lib/security/pam_yubico.so): /lib/security/pam_yubico.so: undefined symbol: pam_set_data
Mar 18 15:49:59 nslu2 freeradius: PAM adding faulty module: /lib/security/pam_yubico.so
Mar 18 15:49:59 nslu2 freeradius: pam_unix(radiusd:auth): authentication failure; logname=root uid=0 euid=0 tty= ruser= rhost=  user=admin
Mar 18 15:50:39 nslu2 freeradius: PAM unable to dlopen(/lib/security/pam_yubico.so): /lib/security/pam_yubico.so: undefined symbol: pam_set_data
Mar 18 15:50:39 nslu2 freeradius: PAM adding faulty module: /lib/security/pam_yubico.so
Mar 18 15:50:46 nslu2 freeradius: PAM unable to dlopen(/lib/security/pam_yubico.so): /lib/security/pam_yubico.so: undefined symbol: pam_set_data
Mar 18 15:50:46 nslu2 freeradius: PAM adding faulty module: /lib/security/pam_yubico.so
Mar 18 15:50:47 nslu2 freeradius: pam_unix(radiusd:auth): authentication failure; logname=root uid=0 euid=0 tty= ruser= rhost=  user=root
nslu2:/etc/pam.d#

rlm_pap: Found existing Auth-Type, not changing it.
++[pap] returns noop
  rad_check_password:  Found Auth-Type pam
auth: type "PAM"
+- entering group authenticate
pam_pass: using pamauth string <radiusd> for pam.conf lookup
pam_pass: function pam_authenticate FAILED for <admin>. Reason: Module is unknown
++[pam] returns reject
auth: Failed to validate the user.
Login incorrect: [admin/<removed plaintext password>cccccccjfcevcdukrucdhtedgivcurvkltgufkhkbduc] (from client localhost port 0)
  Found Post-Auth-Type Reject
+- entering group REJECT
        expand: %{User-Name} -> admin
 attr_filter: Matched entry DEFAULT at line 11
++[attr_filter.access_reject] returns updated
Sending Access-Reject of id 144 to 127.0.0.1 port 48841
Finished request 4.
Going to the next request
Waking up in 4.9 seconds.
Cleaning up request 4 ID 144 with timestamp +197
Ready to process requests.