inner-tunnel

# -*- text -*-
######################################################################
#
#	This is a virtual server that handles *only* inner tunnel
#	requests for EAP-TTLS and PEAP types.
#
#	$Id: 10eeb55db7a1129ea62f2195c17b286eb4acd1d2 $
#
######################################################################

server inner-tunnel {

#
#  This next section is here to allow testing of the "inner-tunnel"
#  authentication methods, independently from the "default" server.
#  It is listening on "localhost", so that it can only be used from
#  the same machine.
#
#	$ radtest USER PASSWORD 127.0.0.1:18120 0 testing123
#
#  If it works, you have configured the inner tunnel correctly.  To check
#  if PEAP will work, use:
#
#	$ radtest -t mschap USER PASSWORD 127.0.0.1:18120 0 testing123
#
#  If that works, PEAP should work.  If that command doesn't work, then
#
#	FIX THE INNER TUNNEL CONFIGURATION SO THAT IT WORKS.
#
#  Do NOT do any PEAP tests.  It won't help.  Instead, concentrate
#  on fixing the inner tunnel configuration.  DO NOTHING ELSE.
#
listen {
       ipaddr = 127.0.0.1
       port = 18120
       type = auth
}


#  Authorization. First preprocess (hints and huntgroups files),
#  then realms, and finally look in the "users" file.
#
#  The order of the realm modules will determine the order that
#  we try to find a matching realm.
#
#  Make *sure* that 'preprocess' comes before any realm if you
#  need to setup hints for the remote radius server
authorize {
	#
	#  Take a User-Name, and perform some checks on it, for spaces and other
	#  invalid characters.  If the User-Name appears invalid, reject the
	#  request.
	#
	#  See policy.d/filter for the definition of the filter_username policy.
	#
	filter_username

	#
	#  Do checks on outer / inner User-Name, so that users
	#  can't spoof us by using incompatible identities
	#
#	filter_inner_identity

	#
	#  The chap module will set 'Auth-Type := CHAP' if we are
	#  handling a CHAP request and Auth-Type has not already been set
	chap

	#
	#  If the users are logging in with an MS-CHAP-Challenge
	#  attribute for authentication, the mschap module will find
	#  the MS-CHAP-Challenge attribute, and add 'Auth-Type := MS-CHAP'
	#  to the request, which will cause the server to then use
	#  the mschap module for authentication.
	mschap

	#
	#  Pull crypt'd passwords from /etc/passwd or /etc/shadow,
	#  using the system API's to get the password.  If you want
	#  to read /etc/passwd or /etc/shadow directly, see the
	#  passwd module, above.
	#
#	unix

	#
	#  Look for IPASS style 'realm/', and if not found, look for
	#  '@realm', and decide whether or not to proxy, based on
	#  that.
#	IPASS

	#
	#  Look for realms in user@domain format
	# 
	#  Note that proxying the inner tunnel authentication means
	#  that the user MAY use one identity in the outer session
	#  (e.g. "anonymous", and a different one here
	#  (e.g. "user@example.com").  The inner session will then be
	#  proxied elsewhere for authentication.  If you are not
	#  careful, this means that the user can cause you to forward
	#  the authentication to another RADIUS server, and have the
	#  accounting logs *not* sent to the other server.  This makes
	#  it difficult to bill people for their network activity.
	#
	suffix
#	ntdomain

	#
	#  The "suffix" module takes care of stripping the domain
	#  (e.g. "@example.com") from the User-Name attribute, and the
	#  next few lines ensure that the request is not proxied.
	#
	#  If you want the inner tunnel request to be proxied, delete
	#  the next few lines.
	#
	update control {
		&Proxy-To-Realm := LOCAL
	}

	#
	#  This module takes care of EAP-MSCHAPv2 authentication.
	#
	#  It also sets the EAP-Type attribute in the request
	#  attribute list to the EAP type from the packet.
	#
	#  The example below uses module failover to avoid querying all
	#  of the following modules if the EAP module returns "ok".
	#  Therefore, your LDAP and/or SQL servers will not be queried
	#  for the many packets that go back and forth to set up TTLS
	#  or PEAP.  The load on those servers will therefore be reduced.
	#
	-eap {
		ok = return
	}

	#
	#  Read the 'users' file
	files

	#
	#  Look in an SQL database.  The schema of the database
	#  is meant to mirror the "users" file.
	#
	#  See "Authorization Queries" in `mods-config/sql/main/$driver/queries.conf`
	-sql

	#
	#  If you are using /etc/smbpasswd, and are also doing
	#  mschap authentication, the un-comment this line, and
	#  enable the "smbpasswd" module.
#	smbpasswd

	#
	#  The ldap module reads passwords from the LDAP database.
	-ldap

    oauth2

	#
	#  Enforce daily limits on time spent logged in.
#	daily

	expiration
	logintime

	#
	#  If no other module has claimed responsibility for
	#  authentication, then try to use PAP.  This allows the
	#  other modules listed above to add a "known good" password
	#  to the request, and to do nothing else.  The PAP module
	#  will then see that password, and use it to do PAP
	#  authentication.
	#
	#  This module should be listed last, so that the other modules
	#  get a chance to set Auth-Type for themselves.
	#
	pap
}


#  Authentication.
#
#
#  This section lists which modules are available for authentication.
#  Note that it does NOT mean 'try each module in order'.  It means
#  that a module from the 'authorize' section adds a configuration
#  attribute 'Auth-Type := FOO'.  That authentication type is then
#  used to pick the appropriate module from the list below.
#

#  In general, you SHOULD NOT set the Auth-Type attribute.  The server
#  will figure it out on its own, and will do the right thing.  The
#  most common side effect of erroneously setting the Auth-Type
#  attribute is that one authentication method will work, but the
#  others will not.
#
#  The common reasons to set the Auth-Type attribute by hand
#  is to either forcibly reject the user, or forcibly accept him.
#
authenticate {
	#
	#  PAP authentication, when a back-end database listed
	#  in the 'authorize' section supplies a password.  The
	#  password can be clear-text, or encrypted.
	Auth-Type PAP {
		pap
	}

	#
	#  Most people want CHAP authentication
	#  A back-end database listed in the 'authorize' section
	#  MUST supply a CLEAR TEXT password.  Encrypted passwords
	#  won't work.
	Auth-Type CHAP {
		chap
	}

	#
	#  MSCHAP authentication.
	Auth-Type MS-CHAP {
		mschap
	}

	#
	#  For old names, too.
	#
	mschap

	#
	#  Pluggable Authentication Modules.
#	pam

	# Uncomment it if you want to use ldap for authentication
	#
	# Note that this means "check plain-text password against
	# the ldap database", which means that EAP won't work,
	# as it does not supply a plain-text password.
	#
	#  We do NOT recommend using this.  LDAP servers are databases.
	#  They are NOT authentication servers.  FreeRADIUS is an
	#  authentication server, and knows what to do with authentication.
	#  LDAP servers do not.
	#
#	Auth-Type LDAP {
#		ldap
#	}

	#
	#  Allow EAP authentication.
	-eap

    Auth-Type oauth2 {
        oauth2
    }
}

######################################################################
#
#	There are no accounting requests inside of EAP-TTLS or PEAP
#	tunnels.
#
######################################################################


#  Session database, used for checking Simultaneous-Use. Either the radutmp
#  or rlm_sql module can handle this.
#  The rlm_sql module is *much* faster
session {
	radutmp

	#
	#  See "Simultaneous Use Checking Queries" in `mods-config/sql/main/$driver/queries.conf`
#	sql
}


#  Post-Authentication
#  Once we KNOW that the user has been authenticated, there are
#  additional steps we can take.
#
#  Note that the last packet of the inner-tunnel authentication
#  MAY NOT BE the last packet of the outer session.  So updating
#  the outer reply MIGHT work, and sometimes MIGHT NOT.  The
#  exact functionality depends on both the inner and outer
#  authentication methods.
#
#  If you need to send a reply attribute in the outer session,
#  the ONLY safe way is to set "use_tunneled_reply = yes", and
#  then update the inner-tunnel reply.
post-auth {
	#  If you want privacy to remain, see the
	#  Chargeable-User-Identity attribute from RFC 4372.
	#  If you want to use it just uncomment the line below.
#       cui-inner

	#
	#  If you want the Access-Accept to contain the inner
	#  User-Name, uncomment the following lines.
	#
#	update outer.session-state {
#	       User-Name := &User-Name
#	}

	#
	#  If you want to have a log of authentication replies,
	#  un-comment the following line, and enable the
	#  'detail reply_log' module.
#	reply_log

	#
	#  After authenticating the user, do another SQL query.
	#
	#  See "Authentication Logging Queries" in `mods-config/sql/main/$driver/queries.conf`
	-sql

	#
	#  Un-comment the following if you have set
	#  'edir = yes' in the ldap module sub-section of
	#  the 'modules' section.
	#
#	ldap

    oauth2

	if (&OAuth2-Group) {
		update {
			&reply:Class += &request:OAuth2-Group[*]
		}
	}

	#
	#  Un-comment the following if you want to generate Moonshot (ABFAB) TargetedIds
	#
	#  IMPORTANT: This requires the UUID package to be installed, and a targeted_id_salt
	#             to be configured.
	#
	#  This functionality also supports SQL backing. To use this functionality, enable
	#  and configure the moonshot-targeted-ids SQL module in the mods-enabled directory.
	#  Then remove the comments from the appropriate lines in each of the below
	#  policies in the policy.d/moonshot-targeted-ids file.
	#
#	moonshot_host_tid
#	moonshot_realm_tid
#	moonshot_coi_tid

	#
	#  Instead of "use_tunneled_reply", change this "if (0)" to an
	#  "if (1)".
	#
	if (0) {
		#
		#  These attributes are for the inner-tunnel only,
		#  and MUST NOT be copied to the outer reply.
		#
		update reply {
			User-Name !* ANY
			Message-Authenticator !* ANY
			EAP-Message !* ANY
			Proxy-State !* ANY
			MS-MPPE-Encryption-Types !* ANY
			MS-MPPE-Encryption-Policy !* ANY
			MS-MPPE-Send-Key !* ANY
			MS-MPPE-Recv-Key !* ANY
		}

		#
		#  Copy the inner reply attributes to the outer
		#  session-state list.  The post-auth policy will take
		#  care of copying the outer session-state list to the
		#  outer reply.
		#
		update {
			&outer.session-state: += &reply:
		}
	}

	#
	#  Access-Reject packets are sent through the REJECT sub-section of the
	#  post-auth section.
	#
	#  Add the ldap module name (or instance) if you have set
	#  'edir = yes' in the ldap module configuration
	#
	Post-Auth-Type REJECT {
		# log failed authentications in SQL, too.
		-sql
		attr_filter.access_reject

		#
		#  Let the outer session know which module failed, and why.
		#
		update outer.session-state {
			&Module-Failure-Message := &request:Module-Failure-Message
		}
	}
}

#
#  When the server decides to proxy a request to a home server,
#  the proxied request is first passed through the pre-proxy
#  stage.  This stage can re-write the request, or decide to
#  cancel the proxy.
#
#  Only a few modules currently have this method.
#
pre-proxy {
	#  Uncomment the following line if you want to change attributes
	#  as defined in the preproxy_users file.
#	files

	#  Uncomment the following line if you want to filter requests
	#  sent to remote servers based on the rules defined in the
	#  'attrs.pre-proxy' file.
#	attr_filter.pre-proxy

	#  If you want to have a log of packets proxied to a home
	#  server, un-comment the following line, and the
	#  'detail pre_proxy_log' section, above.
#	pre_proxy_log
}

#
#  When the server receives a reply to a request it proxied
#  to a home server, the request may be massaged here, in the
#  post-proxy stage.
#
post-proxy {

	#  If you want to have a log of replies from a home server,
	#  un-comment the following line, and the 'detail post_proxy_log'
	#  section, above.
#	post_proxy_log

	#  Uncomment the following line if you want to filter replies from
	#  remote proxies based on the rules defined in the 'attrs' file.
#	attr_filter.post-proxy

	#
	#  If you are proxying LEAP, you MUST configure the EAP
	#  module, and you MUST list it here, in the post-proxy
	#  stage.
	#
	#  You MUST also use the 'nostrip' option in the 'realm'
	#  configuration.  Otherwise, the User-Name attribute
	#  in the proxied request will not match the user name
	#  hidden inside of the EAP packet, and the end server will
	#  reject the EAP request.
	#
	-eap
}

} # inner-tunnel server block