WiMAX TLV value correct in debug but not correct in packet capture
James Leavitt
james.leavitt at corp.xplornet.com
Wed Jul 31 22:10:31 CEST 2013
Strange indeed.
I just rebuilt a new server on a newer os (and 64 bit vs 32), and I am
still seeing the same issue.
I must have something messed up somewhere. Only thing is order of the
whole structure is different from my prod, but that shouldn't matter.
Here's my eap.conf just in case there is something worth looking at,
most significant changes that I've done here is "copy_request_to_tunnel
= yes" and "use_tunneled_reply = yes":
# -*- text -*-
##
## eap.conf -- Configuration for EAP types (PEAP, TTLS, etc.)
##
## $Id$
#######################################################################
#
# Whatever you do, do NOT set 'Auth-Type := EAP'. The server
# is smart enough to figure this out on its own. The most
# common side effect of setting 'Auth-Type := EAP' is that the
# users then cannot use ANY other authentication method.
#
# EAP types NOT listed here may be supported via the "eap2" module.
# See experimental.conf for documentation.
#
eap {
# Invoke the default supported EAP type when
# EAP-Identity response is received.
#
# The incoming EAP messages DO NOT specify which EAP
# type they will be using, so it MUST be set here.
#
# For now, only one default EAP type may be used at a time.
#
# If the EAP-Type attribute is set by another module,
# then that EAP type takes precedence over the
# default type configured here.
#
default_eap_type = md5
# A list is maintained to correlate EAP-Response
# packets with EAP-Request packets. After a
# configurable length of time, entries in the list
# expire, and are deleted.
#
timer_expire = 60
# There are many EAP types, but the server has support
# for only a limited subset. If the server receives
# a request for an EAP type it does not support, then
# it normally rejects the request. By setting this
# configuration to "yes", you can tell the server to
# instead keep processing the request. Another module
# MUST then be configured to proxy the request to
# another RADIUS server which supports that EAP type.
#
# If another module is NOT configured to handle the
# request, then the request will still end up being
# rejected.
ignore_unknown_eap_types = no
# Cisco AP1230B firmware 12.2(13)JA1 has a bug. When given
# a User-Name attribute in an Access-Accept, it copies one
# more byte than it should.
#
# We can work around it by configurably adding an extra
# zero byte.
cisco_accounting_username_bug = no
#
# Help prevent DoS attacks by limiting the number of
# sessions that the server is tracking. Most systems
# can handle ~30 EAP sessions/s, so the default limit
# of 4096 should be OK.
max_sessions = 4096
# Supported EAP-types
#
# We do NOT recommend using EAP-MD5 authentication
# for wireless connections. It is insecure, and does
# not provide for dynamic WEP keys.
#
md5 {
}
# Cisco LEAP
#
# We do not recommend using LEAP in new deployments. See:
# http://www.securiteam.com/tools/5TP012ACKE.html
#
# Cisco LEAP uses the MS-CHAP algorithm (but not
# the MS-CHAP attributes) to perform it's authentication.
#
# As a result, LEAP *requires* access to the plain-text
# User-Password, or the NT-Password attributes.
# 'System' authentication is impossible with LEAP.
#
leap {
}
# Generic Token Card.
#
# Currently, this is only permitted inside of EAP-TTLS,
# or EAP-PEAP. The module "challenges" the user with
# text, and the response from the user is taken to be
# the User-Password.
#
# Proxying the tunneled EAP-GTC session is a bad idea,
# the users password will go over the wire in plain-text,
# for anyone to see.
#
gtc {
# The default challenge, which many clients
# ignore..
#challenge = "Password: "
# The plain-text response which comes back
# is put into a User-Password attribute,
# and passed to another module for
# authentication. This allows the EAP-GTC
# response to be checked against plain-text,
# or crypt'd passwords.
#
# If you say "Local" instead of "PAP", then
# the module will look for a User-Password
# configured for the request, and do the
# authentication itself.
#
auth_type = PAP
}
## EAP-TLS
#
# See raddb/certs/README for additional comments
# on certificates.
#
# If OpenSSL was not found at the time the server was
# built, the "tls", "ttls", and "peap" sections will
# be ignored.
#
# Otherwise, when the server first starts in debugging
# mode, test certificates will be created. See the
# "make_cert_command" below for details, and the README
# file in raddb/certs
#
# These test certificates SHOULD NOT be used in a normal
# deployment. They are created only to make it easier
# to install the server, and to perform some simple
# tests with EAP-TLS, TTLS, or PEAP.
#
# See also:
#
# http://www.dslreports.com/forum/remark,9286052~mode=flat
#
# Note that you should NOT use a globally known CA here!
# e.g. using a Verisign cert as a "known CA" means that
# ANYONE who has a certificate signed by them can
# authenticate via EAP-TLS! This is likely not what you want.
tls {
#
# These is used to simplify later configurations.
#
certdir = ${confdir}/certs
cadir = ${confdir}/certs
private_key_password = whatever
private_key_file = ${certdir}/server.pem
# If Private key & Certificate are located in
# the same file, then private_key_file &
# certificate_file must contain the same file
# name.
#
# If CA_file (below) is not used, then the
# certificate_file below MUST include not
# only the server certificate, but ALSO all
# of the CA certificates used to sign the
# server certificate.
certificate_file = ${certdir}/server.pem
# Trusted Root CA list
#
# ALL of the CA's in this list will be trusted
# to issue client certificates for authentication.
#
# In general, you should use self-signed
# certificates for 802.1x (EAP) authentication.
# In that case, this CA file should contain
# *one* CA certificate.
#
# This parameter is used only for EAP-TLS,
# when you issue client certificates. If you do
# not use client certificates, and you do not want
# to permit EAP-TLS authentication, then delete
# this configuration item.
CA_file = ${cadir}/ca.pem
#
# For DH cipher suites to work, you have to
# run OpenSSL to create the DH file first:
#
# openssl dhparam -out certs/dh 1024
#
dh_file = ${certdir}/dh
random_file = ${certdir}/random
#
# This can never exceed the size of a RADIUS
# packet (4096 bytes), and is preferably half
# that, to accomodate other attributes in
# RADIUS packet. On most APs the MAX packet
# length is configured between 1500 - 1600
# In these cases, fragment size should be
# 1024 or less.
#
# fragment_size = 1024
# include_length is a flag which is
# by default set to yes If set to
# yes, Total Length of the message is
# included in EVERY packet we send.
# If set to no, Total Length of the
# message is included ONLY in the
# First packet of a fragment series.
#
# include_length = yes
# Check the Certificate Revocation List
#
# 1) Copy CA certificates and CRLs to same directory.
# 2) Execute 'c_rehash <CA certs&CRLs Directory>'.
# 'c_rehash' is OpenSSL's command.
# 3) uncomment the line below.
# 5) Restart radiusd
# check_crl = yes
CA_path = ${cadir}
#
# If check_cert_issuer is set, the value will
# be checked against the DN of the issuer in
# the client certificate. If the values do not
# match, the cerficate verification will fail,
# rejecting the user.
#
# In 2.1.10 and later, this check can be done
# more generally by checking the value of the
# TLS-Client-Cert-Issuer attribute. This check
# can be done via any mechanism you choose.
#
# check_cert_issuer = "/C=GB/ST=Berkshire/L=Newbury/O=My
Company Ltd"
#
# If check_cert_cn is set, the value will
# be xlat'ed and checked against the CN
# in the client certificate. If the values
# do not match, the certificate verification
# will fail rejecting the user.
#
# This check is done only if the previous
# "check_cert_issuer" is not set, or if
# the check succeeds.
#
# In 2.1.10 and later, this check can be done
# more generally by checking the value of the
# TLS-Client-Cert-CN attribute. This check
# can be done via any mechanism you choose.
#
# check_cert_cn = %{User-Name}
#
# Set this option to specify the allowed
# TLS cipher suites. The format is listed
# in "man 1 ciphers".
cipher_list = "DEFAULT"
#
# This command creates the initial "snake oil"
# certificates when the server is run as root,
# and via "radiusd -X".
#
# As of 2.1.11, it *also* checks the server
# certificate for validity, including expiration.
# This means that radiusd will refuse to start
# when the certificate has expired. The alternative
# is to have the 802.1X clients refuse to connect
# when they discover the certificate has expired.
#
# Debugging client issues is hard, so it's better
# for the server to print out an error message,
# and refuse to start.
#
# Redhat RPM's run the bootstrap certificate creation
# as part of the RPM install (not upgrade), therefore
# the make_cert_command is commented out.
#
#make_cert_command = "${certdir}/bootstrap"
#
# Elliptical cryptography configuration
#
# Only for OpenSSL >= 0.9.8.f
#
ecdh_curve = "prime256v1"
#
# Session resumption / fast reauthentication
# cache.
#
# The cache contains the following information:
#
# session Id - unique identifier, managed by SSL
# User-Name - from the Access-Accept
# Stripped-User-Name - from the Access-Request
# Cached-Session-Policy - from the Access-Accept
#
# The "Cached-Session-Policy" is the name of a
# policy which should be applied to the cached
# session. This policy can be used to assign
# VLANs, IP addresses, etc. It serves as a useful
# way to re-apply the policy from the original
# Access-Accept to the subsequent Access-Accept
# for the cached session.
#
# On session resumption, these attributes are
# copied from the cache, and placed into the
# reply list.
#
# You probably also want "use_tunneled_reply = yes"
# when using fast session resumption.
#
cache {
#
# Enable it. The default is "no".
# Deleting the entire "cache" subsection
# Also disables caching.
#
# You can disallow resumption for a
# particular user by adding the following
# attribute to the control item list:
#
# Allow-Session-Resumption = No
#
# If "enable = no" below, you CANNOT
# enable resumption for just one user
# by setting the above attribute to "yes".
#
enable = no
#
# Lifetime of the cached entries, in hours.
# The sessions will be deleted after this
# time.
#
lifetime = 24 # hours
#
# The maximum number of entries in the
# cache. Set to "0" for "infinite".
#
# This could be set to the number of users
# who are logged in... which can be a LOT.
#
max_entries = 255
}
#
# As of version 2.1.10, client certificates can be
# validated via an external command. This allows
# dynamic CRLs or OCSP to be used.
#
# This configuration is commented out in the
# default configuration. Uncomment it, and configure
# the correct paths below to enable it.
#
verify {
# A temporary directory where the client
# certificates are stored. This directory
# MUST be owned by the UID of the server,
# and MUST not be accessible by any other
# users. When the server starts, it will do
# "chmod go-rwx" on the directory, for
# security reasons. The directory MUST
# exist when the server starts.
#
# You should also delete all of the files
# in the directory when the server starts.
# tmpdir = /tmp/radiusd
# The command used to verify the client cert.
# We recommend using the OpenSSL command-line
# tool.
#
# The ${..CA_path} text is a reference to
# the CA_path variable defined above.
#
# The %{TLS-Client-Cert-Filename} is the name
# of the temporary file containing the cert
# in PEM format. This file is automatically
# deleted by the server when the command
# returns.
# client = "/path/to/openssl verify -CApath
${..CA_path} %{TLS-Client-Cert-Filename}"
}
#
# OCSP Configuration
# Certificates can be verified against an OCSP
# Responder. This makes it possible to immediately
# revoke certificates without the distribution of
# new Certificate Revokation Lists (CRLs).
#
ocsp {
#
# Enable it. The default is "no".
# Deleting the entire "ocsp" subsection
# Also disables ocsp checking
#
enable = no
#
# The OCSP Responder URL can be automatically
# extracted from the certificate in question.
# To override the OCSP Responder URL set
# "override_cert_url = yes".
#
override_cert_url = yes
#
# If the OCSP Responder address is not
# extracted from the certificate, the
# URL can be defined here.
#
# Limitation: Currently the HTTP
# Request is not sending the "Host: "
# information to the web-server. This
# can be a problem if the OCSP
# Responder is running as a vhost.
#
url = "http://127.0.0.1/ocsp/"
#
# If the OCSP Responder can not cope with nonce
# in the request, then it can be disabled here.
#
# For security reasons, disabling this option
# is not recommended as nonce protects against
# replay attacks.
#
# Note that Microsoft AD Certificate Services OCSP
# Responder does not enable nonce by default. It is
# more secure to enable nonce on the responder than
# to disable it in the query here.
# See
http://technet.microsoft.com/en-us/library/cc770413%28WS.10%29.aspx
#
# use_nonce = yes
#
# Number of seconds before giving up waiting
# for OCSP response. 0 uses system default.
#
# timeout = 0
#
# Normally an error in querying the OCSP
# responder (no response from server, server did
# not understand the request, etc) will result in
# a validation failure.
#
# To treat these errors as 'soft' failures and
# still accept the certificate, enable this
# option.
#
# Warning: this may enable clients with revoked
# certificates to connect if the OCSP responder
# is not available. Use with caution.
#
# softfail = no
}
}
# The TTLS module implements the EAP-TTLS protocol,
# which can be described as EAP inside of Diameter,
# inside of TLS, inside of EAP, inside of RADIUS...
#
# Surprisingly, it works quite well.
#
# The TTLS module needs the TLS module to be installed
# and configured, in order to use the TLS tunnel
# inside of the EAP packet. You will still need to
# configure the TLS module, even if you do not want
# to deploy EAP-TLS in your network. Users will not
# be able to request EAP-TLS, as it requires them to
# have a client certificate. EAP-TTLS does not
# require a client certificate.
#
# You can make TTLS require a client cert by setting
#
# EAP-TLS-Require-Client-Cert = Yes
#
# in the control items for a request.
#
ttls {
# The tunneled EAP session needs a default
# EAP type which is separate from the one for
# the non-tunneled EAP module. Inside of the
# TTLS tunnel, we recommend using EAP-MD5.
# If the request does not contain an EAP
# conversation, then this configuration entry
# is ignored.
default_eap_type = md5
# The tunneled authentication request does
# not usually contain useful attributes
# like 'Calling-Station-Id', etc. These
# attributes are outside of the tunnel,
# and normally unavailable to the tunneled
# authentication request.
#
# By setting this configuration entry to
# 'yes', any attribute which NOT in the
# tunneled authentication request, but
# which IS available outside of the tunnel,
# is copied to the tunneled request.
#
# allowed values: {no, yes}
copy_request_to_tunnel = yes
# The reply attributes sent to the NAS are
# usually based on the name of the user
# 'outside' of the tunnel (usually
# 'anonymous'). If you want to send the
# reply attributes based on the user name
# inside of the tunnel, then set this
# configuration entry to 'yes', and the reply
# to the NAS will be taken from the reply to
# the tunneled request.
#
# allowed values: {no, yes}
use_tunneled_reply = yes
#
# The inner tunneled request can be sent
# through a virtual server constructed
# specifically for this purpose.
#
# If this entry is commented out, the inner
# tunneled request will be sent through
# the virtual server that processed the
# outer requests.
#
virtual_server = "inner-tunnel"
# This has the same meaning as the
# same field in the "tls" module, above.
# The default value here is "yes".
# include_length = yes
}
##################################################
#
# !!!!! WARNINGS for Windows compatibility !!!!!
#
##################################################
#
# If you see the server send an Access-Challenge,
# and the client never sends another Access-Request,
# then
#
# STOP!
#
# The server certificate has to have special OID's
# in it, or else the Microsoft clients will silently
# fail. See the "scripts/xpextensions" file for
# details, and the following page:
#
# http://support.microsoft.com/kb/814394/en-us
#
# For additional Windows XP SP2 issues, see:
#
# http://support.microsoft.com/kb/885453/en-us
#
#
# If is still doesn't work, and you're using Samba,
# you may be encountering a Samba bug. See:
#
# https://bugzilla.samba.org/show_bug.cgi?id=6563
#
# Note that we do not necessarily agree with their
# explanation... but the fix does appear to work.
#
##################################################
#
# The tunneled EAP session needs a default EAP type
# which is separate from the one for the non-tunneled
# EAP module. Inside of the TLS/PEAP tunnel, we
# recommend using EAP-MS-CHAPv2.
#
# The PEAP module needs the TLS module to be installed
# and configured, in order to use the TLS tunnel
# inside of the EAP packet. You will still need to
# configure the TLS module, even if you do not want
# to deploy EAP-TLS in your network. Users will not
# be able to request EAP-TLS, as it requires them to
# have a client certificate. EAP-PEAP does not
# require a client certificate.
#
#
# You can make PEAP require a client cert by setting
#
# EAP-TLS-Require-Client-Cert = Yes
#
# in the control items for a request.
#
peap {
# The tunneled EAP session needs a default
# EAP type which is separate from the one for
# the non-tunneled EAP module. Inside of the
# PEAP tunnel, we recommend using MS-CHAPv2,
# as that is the default type supported by
# Windows clients.
default_eap_type = mschapv2
# the PEAP module also has these configuration
# items, which are the same as for TTLS.
copy_request_to_tunnel = no
use_tunneled_reply = no
# When the tunneled session is proxied, the
# home server may not understand EAP-MSCHAP-V2.
# Set this entry to "no" to proxy the tunneled
# EAP-MSCHAP-V2 as normal MSCHAPv2.
# proxy_tunneled_request_as_eap = yes
#
# The inner tunneled request can be sent
# through a virtual server constructed
# specifically for this purpose.
#
# If this entry is commented out, the inner
# tunneled request will be sent through
# the virtual server that processed the
# outer requests.
#
virtual_server = "inner-tunnel"
# This option enables support for MS-SoH
# see doc/SoH.txt for more info.
# It is disabled by default.
#
# soh = yes
#
# The SoH reply will be turned into a request which
# can be sent to a specific virtual server:
#
# soh_virtual_server = "soh-server"
}
#
# This takes no configuration.
#
# Note that it is the EAP MS-CHAPv2 sub-module, not
# the main 'mschap' module.
#
# Note also that in order for this sub-module to work,
# the main 'mschap' module MUST ALSO be configured.
#
# This module is the *Microsoft* implementation of MS-CHAPv2
# in EAP. There is another (incompatible) implementation
# of MS-CHAPv2 in EAP by Cisco, which FreeRADIUS does not
# currently support.
#
mschapv2 {
# Prior to version 2.1.11, the module never
# sent the MS-CHAP-Error message to the
# client. This worked, but it had issues
# when the cached password was wrong. The
# server *should* send "E=691 R=0" to the
# client, which tells it to prompt the user
# for a new password.
#
# The default is to behave as in 2.1.10 and
# earlier, which is known to work. If you
# set "send_error = yes", then the error
# message will be sent back to the client.
# This *may* help some clients work better,
# but *may* also cause other clients to stop
# working.
#
# send_error = no
}
}
On 07/31/2013 04:04 PM, Alan DeKok wrote:
> Re: WiMAX TLV value correct in debug but not correct in packet capture
>
> I havent looked at the pcap file, but I'm sure it says the same
> thing. The WiMAX VSA is wrong. I don't know why. It works for me,
> using the default configuration.
> -
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> http://www.freeradius.org/list/users.html
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