PAP Authentication

21 Jun 2010

      Dear all,
I have an ADSL modem (running PPPoE Client) connect to a Cisco PPPoE 
Server.

The Cisco PPPoE Server forward PPPoE request from CPE to the Freeradius 
2.1.0.
I would like to provide to CPE an IP address based on the pair: 
Username/password.
Authentication used: PAP

I see the WARNING message reported by Freeradius, but my tentative to fix 
them fails.
Can you help me
Thank you very much.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1) I have added to radiusd.conf the module:
  # PAP module to authenticate users based on their stored password
        #
        #  Supports multiple encryption schemes
        #  clear: Clear text
        #  crypt: Unix crypt
        #    md5: MD5 ecnryption
        #   sha1: SHA1 encryption.
        #  DEFAULT: crypt
        pap {
                encryption_scheme = clear
        }
2) I have modify the module pap:
pap {
        auto_header = yes
}
3) In users I have added:
mr642wg Auth-Type := PAP, User-Password == "mr642wg"
        Service-Type = Framed-User,
        User-Name = "mr642wg",
        User-Password = "mr642wg",
        Framed-Protocol = PPP,
        Framed-IP-Address = 192.168.90.161,
        Framed-IP-Netmask = 255.255.255.248,
4) In clients.conf I have added;
client 10.31.0.0/24 {
#       # secret and password are mapped through the "secrets" file.
        secret      = testing123
        shortname   = liv1
#       # the following three fields are optional, but may be used by
#       # checkrad.pl for simultaneous usage checks
#       nastype     = livingston
#       login       = !root
#       password    = someadminpas
}

This is the output from freeradius -X

freeradius -X
FreeRADIUS Version 2.1.0, for host i486-pc-linux-gnu, built on Nov 14 2008 
at 11:57:03
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 v2.
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 files in directory /etc/freeradius/modules/
including configuration file /etc/freeradius/modules/policy
including configuration file /etc/freeradius/modules/passwd
including configuration file /etc/freeradius/modules/radutmp
including configuration file /etc/freeradius/modules/krb5
including configuration file /etc/freeradius/modules/linelog
including configuration file /etc/freeradius/modules/echo
including configuration file /etc/freeradius/modules/attr_rewrite
including configuration file /etc/freeradius/modules/mschap
including configuration file /etc/freeradius/modules/ippool
including configuration file /etc/freeradius/modules/digest
including configuration file /etc/freeradius/modules/expiration
including configuration file /etc/freeradius/modules/sradutmp
including configuration file /etc/freeradius/modules/files
including configuration file /etc/freeradius/modules/detail.log
including configuration file /etc/freeradius/modules/expr
including configuration file /etc/freeradius/modules/wimax
including configuration file /etc/freeradius/modules/smbpasswd
including configuration file /etc/freeradius/modules/mac2vlan
including configuration file /etc/freeradius/modules/pap
including configuration file /etc/freeradius/modules/logintime
including configuration file /etc/freeradius/modules/always
including configuration file /etc/freeradius/modules/pam
including configuration file /etc/freeradius/modules/inner-eap
including configuration file /etc/freeradius/modules/etc_group
including configuration file /etc/freeradius/modules/sql_log
including configuration file /etc/freeradius/modules/chap
including configuration file /etc/freeradius/modules/realm
including configuration file /etc/freeradius/modules/exec
including configuration file /etc/freeradius/modules/counter
including configuration file /etc/freeradius/modules/preprocess
including configuration file /etc/freeradius/modules/detail.example.com
including configuration file /etc/freeradius/modules/attr_filter
including configuration file /etc/freeradius/modules/mac2ip
including configuration file /etc/freeradius/modules/unix
including configuration file /etc/freeradius/modules/detail
including configuration file /etc/freeradius/modules/acct_unique
including configuration file /etc/freeradius/modules/checkval
including configuration file /etc/freeradius/modules/ldap
including configuration file /etc/freeradius/eap.conf
including configuration file /etc/freeradius/sql.conf
including configuration file /etc/freeradius/sql/mysql/dialup.conf
including configuration file /etc/freeradius/sql/mysql/counter.conf
including configuration file /etc/freeradius/policy.conf
including files in directory /etc/freeradius/sites-enabled/
including configuration file /etc/freeradius/sites-enabled/inner-tunnel
including configuration file /etc/freeradius/sites-enabled/default
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/radiusd/radiusd.pid"
        checkrad = "/usr/sbin/checkrad"
        debug_level = 0
        proxy_requests = yes
 log {
        stripped_names = no
        auth = no
        auth_badpass = no
        auth_goodpass = no
 }
 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"
 }
 client 10.31.0.0/24 {
        require_message_authenticator = no
        secret = "testing123"
        shortname = "liv1"
 }
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_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 {
 }
 realm serbia.com {
        authhost = LOCAL
        accthost = LOCAL
 }
radiusd: #### Instantiating modules ####
 instantiate {
 Module: Linked to module rlm_exec
 Module: Instantiating exec
  exec {
        wait = no
        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 = "clear"
        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
        max_sessions = 2048
  }
 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"
   }
Ignoring EAP-Type/tls because we do not have OpenSSL support.
Ignoring EAP-Type/ttls because we do not have OpenSSL support.
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}"
  }
 }
}
 modules {
 Module: Checking authenticate {...} for more modules to load
 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
}
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 10.31.0.107 port 21645, id=26, 
length=77
        Framed-Protocol = PPP
        User-Name = "mr642wg"
        User-Password = "mr642wg"
        NAS-Port-Type = Virtual
        NAS-Port = 0
        Service-Type = Framed-User
        NAS-IP-Address = 10.31.0.107
+- entering group authorize {...}
++[preprocess] returns ok
++[chap] returns noop
++[mschap] returns noop
[suffix] No '@' in User-Name = "mr642wg", looking up realm NULL
[suffix] No such realm "NULL"
++[suffix] returns noop
[eap] No EAP-Message, not doing EAP
++[eap] returns noop
++[unix] returns notfound
WARNING: Found User-Password == "...".
WARNING: Are you sure you don't mean Cleartext-Password?
WARNING: See "man rlm_pap" for more information.
[files] users: Matched entry mr642wg at line 105
++[files] returns ok
++[expiration] returns noop
++[logintime] returns noop
[pap] WARNING! No "known good" password found for the user. Authentication 
may fail because of this.
++[pap] returns noop
Found Auth-Type = PAP
+- entering group PAP {...}
[pap] login attempt with password "mr642wg"
[pap] No password configured for the user.  Cannot do authentication
++[pap] returns fail
Failed to authenticate the user.
Using Post-Auth-Type Reject
+- entering group REJECT {...}
        expand: %{User-Name} -> mr642wg
 attr_filter: Matched entry DEFAULT at line 11
++[attr_filter.access_reject] returns updated
Delaying reject of request 0 for 1 seconds
Going to the next request
Waking up in 0.9 seconds.
Sending delayed reject for request 0
Sending Access-Reject of id 26 to 10.31.0.107 port 21645
Waking up in 4.9 seconds.
Cleaning up request 0 ID 26 with timestamp +121
Ready to process requests.

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PAP Authentication

simone.trevisan＠telsey.it