-- Cornelius Kölbel Http://www.lsexperts.de LSE Leading Security Experts GmbH Tel: +49 6151 9067-252, mobil: +49 160 96307089 Unternehmenssitz: Weiterstadt Geschäftsführer: Oliver Michel, Sven Walther, Dr. Peter Schill Am 07.06.2012 um 14:36 schrieb "Morris, Andi" <amorris@cardiffmet.ac.uk>:

It pains me to send this to the list as I know I’m going to get shot down for missing something obvious, but I simply can’t think of where else I need to set this up. I’m moving my web proxy servers from ISA to TMG and need to declare the TMG servers in my freeradius servers so that they accept NATed requests from my MS IAS servers. I have added the new servers to /etc/raddb/clients.conf in the same way as the ISA servers were, and entered a shared secret (simple to try and help debug this). I have then added the same servers to my clients list in MS IAS with the same shared secret.

The problem is that the FR server is reporting a shared secret mismatch when requests come from the new servers: rad_recv: Access-Request packet from host 4.4.4.4 port 62463, id=1, length=211 Received packet from 4.4.4.4 with invalid Message-Authenticator! (Shared secret is incorrect.) Dropping packet without response. Going to the next request

I have typed and retyped the shared secret several times on both FR and IAS sides of the conversation. Is there anywhere else in FR I need to declare the new servers that I have missed, or do I need to concentrate the efforts to the IAS servers? Full debug output with masked details below: FreeRADIUS Version 2.1.7, for host i686-redhat-linux-gnu, built on Mar 31 2010 at 00:25:31 Copyright (C) 1999-2009 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/raddb/radiusd.conf including configuration file /etc/raddb/proxy.conf including configuration file /etc/raddb/clients.conf including files in directory /etc/raddb/modules/ including configuration file /etc/raddb/modules/policy including configuration file /etc/raddb/modules/smsotp including configuration file /etc/raddb/modules/counter including configuration file /etc/raddb/modules/digest including configuration file /etc/raddb/modules/detail.log including configuration file /etc/raddb/modules/detail including configuration file /etc/raddb/modules/detail.example.com including configuration file /etc/raddb/modules/realm including configuration file /etc/raddb/modules/attr_rewrite including configuration file /etc/raddb/modules/chap including configuration file /etc/raddb/modules/exec including configuration file /etc/raddb/modules/mschap including configuration file /etc/raddb/modules/radutmp including configuration file /etc/raddb/modules/passwd including configuration file /etc/raddb/modules/linelog including configuration file /etc/raddb/modules/unix including configuration file /etc/raddb/modules/expiration including configuration file /etc/raddb/modules/ippool including configuration file /etc/raddb/modules/mac2vlan including configuration file /etc/raddb/modules/mac2ip including configuration file /etc/raddb/modules/preprocess including configuration file /etc/raddb/modules/logintime including configuration file /etc/raddb/modules/pam including configuration file /etc/raddb/modules/perl including configuration file /etc/raddb/modules/checkval including configuration file /etc/raddb/modules/pap including configuration file /etc/raddb/modules/attr_filter including configuration file /etc/raddb/modules/smbpasswd including configuration file /etc/raddb/modules/sql_log including configuration file /etc/raddb/modules/inner-eap including configuration file /etc/raddb/modules/expr including configuration file /etc/raddb/modules/always including configuration file /etc/raddb/modules/echo including configuration file /etc/raddb/modules/etc_group including configuration file /etc/raddb/modules/files including configuration file /etc/raddb/modules/cui including configuration file /etc/raddb/modules/wimax including configuration file /etc/raddb/modules/otp including configuration file /etc/raddb/modules/acct_unique including configuration file /etc/raddb/modules/sqlcounter_expire_on_login including configuration file /etc/raddb/modules/sradutmp including configuration file /etc/raddb/eap.conf

including configuration file /etc/raddb/policy.conf including files in directory /etc/raddb/sites-enabled/ including configuration file /etc/raddb/sites-enabled/eduroam group = radiusd user = radiusd including dictionary file /etc/raddb/dictionary main { prefix = "/usr" localstatedir = "/var" logdir = "/var/log/radius" libdir = "/usr/lib/freeradius" radacctdir = "/var/log/radius/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 = 2 proxy_requests = yes log { stripped_names = no auth = no auth_badpass = no auth_goodpass = no } security { max_attributes = 200 reject_delay = 0 status_server = yes } } radiusd: #### Loading Realms and Home Servers #### proxy server { retry_delay = 5 retry_count = 3 default_fallback = yes dead_time = 120 wake_all_if_all_dead = no }

home_server server01 { ipaddr = x.x.x.x port = 1812 type = "auth+acct" secret = "testing123" response_window = 20 max_outstanding = 65536 zombie_period = 40 status_check = "none" ping_interval = 30 check_interval = 30 num_answers_to_alive = 3 num_pings_to_alive = 3 revive_interval = 60 status_check_timeout = 4 irt = 2 mrt = 16 mrc = 5 mrd = 30 } home_server server02 { ipaddr = y.y.y.y port = 1812 type = "auth+acct" secret = "testing123" response_window = 20 max_outstanding = 65536 zombie_period = 40 status_check = "none" ping_interval = 30 check_interval = 30 num_answers_to_alive = 3 num_pings_to_alive = 3 revive_interval = 60 status_check_timeout = 4 irt = 2 mrt = 16 mrc = 5 mrd = 30 } home_server_pool home { type = fail-over home_server = server01 home_server = server02 } realm home.co.uk { pool = home nostrip }

realm newhome.co.uk { pool = home nostrip } realm LOCAL { } realm NULL { } home_server extserver00 { ipaddr = x.x.x.x port = 1812 type = "auth+acct" 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 = 60 status_check_timeout = 4 irt = 2 mrt = 16 mrc = 5 mrd = 30 } home_server extserver01 { ipaddr = x.x.x.x port = 1812 type = "auth+acct" 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 = 60 status_check_timeout = 4 irt = 2 mrt = 16 mrc = 5 mrd = 30 }

home_server extserver02 { ipaddr = x.x.x.x port = 1812 type = "auth+acct" 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 = 60 status_check_timeout = 4 irt = 2 mrt = 16 mrc = 5 mrd = 30 } home_server_pool ext { type = fail-over home_server = extserver00 home_server = extserver01 home_server = extserver02 } realm DEFAULT { pool = ext nostrip } radiusd: #### Loading Clients #### client localhost { ipaddr = 127.0.0.1 netmask = 32 require_message_authenticator = no secret = "testing123" nastype = "other" virtual_server = "eduroam" } client isa1 { ipaddr = 1.1.1.1 netmask = 32 require_message_authenticator = no secret = "testing123" nastype = "other" virtual_server = "noname" }

client isa2 { ipaddr = 2.2.2.2 netmask = 32 require_message_authenticator = no secret = "testing123" nastype = "other" virtual_server = "noname" } client isa3 { ipaddr = 3.3.3.3 netmask = 32 require_message_authenticator = no secret = "testing123" nastype = "other" virtual_server = "noname" } client tmg1 { ipaddr = 4.4.4.4 netmask = 32 require_message_authenticator = no secret = "testing123" nastype = "other" virtual_server = "noname" } client tmg2 { ipaddr = 5.5.5.5 netmask = 32 require_message_authenticator = no secret = "testing123" nastype = "other" virtual_server = "noname" } client extserver00 { ipaddr = x.x.x.x netmask = 32 require_message_authenticator = no secret = "testing123" nastype = "other" virtual_server = "noname" } client extserver01 { ipaddr = x.x.x.x netmask = 32 require_message_authenticator = no secret = "testing123" nastype = "other" virtual_server = "noname" }

client extserver02 { ipaddr = x.x.x.x netmask = 32 require_message_authenticator = no secret = "testing123" nastype = "other" virtual_server = "noname" } 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 eduroam { modules { Module: Checking authenticate {...} for more modules to load 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" } Module: Linked to sub-module rlm_eap_tls Module: Instantiating eap-tls tls { rsa_key_exchange = no dh_key_exchange = yes rsa_key_length = 512 dh_key_length = 512 verify_depth = 0 pem_file_type = yes private_key_file = "/etc/raddb/certs/server.pem" certificate_file = "/etc/raddb/certs/server.pem" CA_file = "/etc/raddb/certs/ca.pem" private_key_password = "whatever" dh_file = "/etc/raddb/certs/dh" random_file = "/etc/raddb/certs/random" fragment_size = 1024 include_length = yes check_crl = no cipher_list = "DEFAULT" make_cert_command = "/etc/raddb/certs/bootstrap" cache { enable = no lifetime = 24 max_entries = 255 } } Module: Linked to sub-module rlm_eap_ttls Module: Instantiating eap-ttls ttls { default_eap_type = "md5" copy_request_to_tunnel = no use_tunneled_reply = no virtual_server = "inner-tunnel" include_length = yes }

Module: Linked to sub-module rlm_eap_peap Module: Instantiating eap-peap peap { default_eap_type = "mschapv2" copy_request_to_tunnel = no use_tunneled_reply = no proxy_tunneled_request_as_eap = yes virtual_server = "inner-tunnel" } 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_detail Module: Instantiating auth_log detail auth_log { detailfile = "/var/log/radius/radacct/auth-detail" header = "%t" detailperm = 384 dirperm = 493 locking = no log_packet_header = no } Module: Linked to module rlm_realm Module: Instantiating suffix realm suffix { format = "suffix" delimiter = "@" ignore_default = no ignore_null = no } Module: Checking preacct {...} for more modules to load Module: Checking accounting {...} for more modules to load Module: Instantiating detail detail { detailfile = "/var/log/radius/radacct/detail" header = "%t" detailperm = 384 dirperm = 493 locking = no log_packet_header = no } Module: Checking pre-proxy {...} for more modules to load Module: Linked to module rlm_attr_filter Module: Instantiating attr_filter.pre-proxy attr_filter attr_filter.pre-proxy { attrsfile = "/etc/raddb/attrs.pre-proxy" key = "%{Realm}" }

Module: Instantiating pre_proxy_log detail pre_proxy_log { detailfile = "/var/log/radius/radacct/pre-proxy-detail" header = "%t" detailperm = 384 dirperm = 493 locking = no log_packet_header = no } Module: Checking post-proxy {...} for more modules to load Module: Instantiating post_proxy_log detail post_proxy_log { detailfile = "/var/log/radius/radacct/post-proxy-detail" header = "%t" detailperm = 384 dirperm = 493 locking = no log_packet_header = no } Module: Instantiating attr_filter.post-proxy attr_filter attr_filter.post-proxy { attrsfile = "/etc/raddb/attrs" key = "%{Realm}" } Module: Checking post-auth {...} for more modules to load Module: Instantiating reply_log detail reply_log { detailfile = "/var/log/radius/radacct/reply-detail" header = "%t" detailperm = 384 dirperm = 493 locking = no log_packet_header = no } } # modules } # server server { modules { } # modules } # server 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 5.5.5.5 port 35394, id=1, length=211 Received packet from 5.5.5.5 with invalid Message-Authenticator! (Shared secret is incorrect.) Dropping packet without response. Going to the next request Waking up in 0.9 seconds. Cleaning up request 0 ID 1 with timestamp +274 Ready to process requests.

Cheers for any help possible, Andi

From 1st November 2011 UWIC changed its title to Cardiff Metropolitan University. From the 6th December 2011, as part of this change, all email addresses which included @uwic.ac.uk have changed to @cardiffmet.ac.uk. All emails sent from Cardiff Metropolitan University will now be sent from the new @cardiffmet.ac.uk address. Please could you ensure that all of your contact records and databases are updated to reflect this change. Further information can be found on the website here.

Ar Dachwedd y 1af 2011 newidiodd UWIC ei henw i Brifysgol Fetropolitan Caerdydd. O Ragfyr 6ed, fel rhan o'r newid yma, bydd pob cyfeiriad e-bost sy'n cynnwys @uwic.ac.uk yn newid i @cardiffmet.ac.uk. Bydd yr holl ebyst a ddanfonir o Brifysgol Fetropolitan Caerdydd yn cael eu danfon o‘r cyfeiriad @cardiffmet.ac.uk newydd. Gwnewch yn siwr eich bod yn diweddaru eich cofnodion cyswllt a'ch cronfeydd data i adlewyrchu hyn. Gellir cael rhagor o wybodaeth ar y wefan yma.

- List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html

Morris, Andi wrote:

It pains me to send this to the list as I know I’m going to get shot The problem is that the FR server is reporting a shared secret mismatch when requests come from the new servers:

The issue is: a) the shared secret is wrong b) one end (not FreeRADIUS) is creating a bad Message-Authenticator The answer is almost always (a). Usually because you're editing one file, and the server is reading another. There really is no magic here. If the server says the secret is wrong, it's because the secret is wrong. Find out *which* secret you need to edit, and fix it. Alan DeKok.