EAP-TTLS-PAP Doesn't send Clear-Password to proxy-innter-tunnel

3 Aug 2016


      Hey there,
I have a home server which only supports pap. FreeRADIUS were configured to establish eap-ttls-pap and then proxy the inner request to my home server. Although It configured to use pap but it doesn’t send user clear-text-password to my home server. Here is the output of freeradius -X:
oot@eduroam:/etc/freeradius# freeradius -X
Server was built with: 
 accounting               : yes
 authentication           : yes
 ascend-binary-attributes : yes
 coa                      : yes
 control-socket           : yes
 detail                   : yes
 dhcp                     : yes
 dynamic-clients          : yes
 osfc2                    : no
 proxy                    : yes
 regex-pcre               : no
 regex-posix              : yes
 regex-posix-extended     : yes
 session-management       : yes
 stats                    : yes
 tcp                      : yes
 threads                  : yes
 tls                      : yes
 unlang                   : yes
 vmps                     : yes
 developer                : no
Server core libs:
 freeradius-server        : 3.0.11
 talloc                   : 2.0.*
 ssl                      : 1.0.1f release
Endianness:
 little
Compilation flags:
 cppflags : -D_FORTIFY_SOURCE=2
 cflags   : -I/build/freeradius-8d5m9K/freeradius-3.0.11 -I/build/freeradius-8d5m9K/freeradius-3.0.11/src -include /build/freeradius-8d5m9K/freeradius-3.0.11/src/freeradius-devel/autoconf.h -include /build/freeradius-8d5m9K/freeradius-3.0.11/src/freeradius-devel/build.h -include /build/freeradius-8d5m9K/freeradius-3.0.11/src/freeradius-devel/features.h -include /build/freeradius-8d5m9K/freeradius-3.0.11/src/freeradius-devel/radpaths.h -fno-strict-aliasing -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -O2 -Wall -std=c99 -D_GNU_SOURCE -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS -DOPENSSL_NO_KRB5 -DNDEBUG -DIS_MODULE=1
 ldflags  :  -Wl,-Bsymbolic-functions -Wl,-z,relro
 libs     : -lcrypto -lssl -ltalloc -lcap -lnsl -lresolv -ldl -lpthread -lreadline

Copyright (C) 1999-2016 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
For more information about these matters, see the file named COPYRIGHT
Starting - reading configuration files ...
including dictionary file /usr/share/freeradius/dictionary
including dictionary file /usr/share/freeradius/dictionary.dhcp
including dictionary file /usr/share/freeradius/dictionary.vqp
including dictionary file /etc/freeradius/dictionary
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/mods-enabled/
including configuration file /etc/freeradius/mods-enabled/realm
including configuration file /etc/freeradius/mods-enabled/files
including configuration file /etc/freeradius/mods-enabled/expiration
including configuration file /etc/freeradius/mods-enabled/ntlm_auth
including configuration file /etc/freeradius/mods-enabled/detail.log
including configuration file /etc/freeradius/mods-enabled/unix
including configuration file /etc/freeradius/mods-enabled/linelog
including configuration file /etc/freeradius/mods-enabled/dynamic_clients
including configuration file /etc/freeradius/mods-enabled/sradutmp
including configuration file /etc/freeradius/mods-enabled/digest
including configuration file /etc/freeradius/mods-enabled/detail
including configuration file /etc/freeradius/mods-enabled/expr
including configuration file /etc/freeradius/mods-enabled/soh
including configuration file /etc/freeradius/mods-enabled/unpack
including configuration file /etc/freeradius/mods-enabled/eap
including configuration file /etc/freeradius/mods-enabled/replicate
including configuration file /etc/freeradius/mods-enabled/cache_eap
including configuration file /etc/freeradius/mods-enabled/pap
including configuration file /etc/freeradius/mods-enabled/passwd
including configuration file /etc/freeradius/mods-enabled/radutmp
including configuration file /etc/freeradius/mods-enabled/always
including configuration file /etc/freeradius/mods-enabled/mschap
including configuration file /etc/freeradius/mods-enabled/echo
including configuration file /etc/freeradius/mods-enabled/chap
including configuration file /etc/freeradius/mods-enabled/preprocess
including configuration file /etc/freeradius/mods-enabled/utf8
including configuration file /etc/freeradius/mods-enabled/exec
including configuration file /etc/freeradius/mods-enabled/attr_filter
including configuration file /etc/freeradius/mods-enabled/logintime
including files in directory /etc/freeradius/policy.d/
including configuration file /etc/freeradius/policy.d/operator-name
including configuration file /etc/freeradius/policy.d/canonicalization
including configuration file /etc/freeradius/policy.d/eap
including configuration file /etc/freeradius/policy.d/accounting
including configuration file /etc/freeradius/policy.d/cui
including configuration file /etc/freeradius/policy.d/dhcp
including configuration file /etc/freeradius/policy.d/abfab-tr
including configuration file /etc/freeradius/policy.d/control
including configuration file /etc/freeradius/policy.d/filter
including configuration file /etc/freeradius/policy.d/debug
including files in directory /etc/freeradius/sites-enabled/
including configuration file /etc/freeradius/sites-enabled/default
including configuration file /etc/freeradius/sites-enabled/proxy-inner-tunnel
main {
security {
	user = "freerad"
	group = "freerad"
	allow_core_dumps = no
}
	name = "freeradius"
	prefix = "/usr"
	localstatedir = "/var"
	logdir = "/var/log/freeradius"
	run_dir = "/var/run/freeradius"
}
main {
	name = "freeradius"
	prefix = "/usr"
	localstatedir = "/var"
	sbindir = "/usr/sbin"
	logdir = "/var/log/freeradius"
	run_dir = "/var/run/freeradius"
	libdir = "/usr/lib/freeradius"
	radacctdir = "/var/log/freeradius/radacct"
	hostname_lookups = no
	max_request_time = 30
	cleanup_delay = 5
	max_requests = 16384
	pidfile = "/var/run/freeradius/freeradius.pid"
	checkrad = "/usr/sbin/checkrad"
	debug_level = 0
	proxy_requests = yes
log {
	stripped_names = no
	auth = no
	auth_badpass = no
	auth_goodpass = no
	colourise = yes
	msg_denied = "You are already logged in - access denied"
}
resources {
}
security {
	max_attributes = 200
	reject_delay = 1.000000
	status_server = yes
}
}
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 ut-ibsng {
	ipaddr = 172.16.16.29
	port = 1812
	type = "auth"
	secret = <<< secret >>>
	response_window = 30.000000
	response_timeouts = 1
	max_outstanding = 65536
	zombie_period = 40
	status_check = "none"
	ping_interval = 30
	check_timeout = 4
	num_answers_to_alive = 3
	revive_interval = 300
 limit {
 	max_connections = 16
 	max_requests = 0
 	lifetime = 0
 	idle_timeout = 0
 }
 coa {
 	irt = 2
 	mrt = 16
 	mrc = 5
 	mrd = 30
 }
}
home_server localhost {
	ipaddr = 127.0.0.1
	port = 1812
	type = "auth"
	secret = <<< secret >>>
	response_window = 20.000000
	response_timeouts = 1
	max_outstanding = 65536
	zombie_period = 40
	status_check = "status-server"
	ping_interval = 30
	check_interval = 30
	check_timeout = 4
	num_answers_to_alive = 3
	revive_interval = 120
 limit {
 	max_connections = 16
 	max_requests = 0
 	lifetime = 0
 	idle_timeout = 0
 }
 coa {
 	irt = 2
 	mrt = 16
 	mrc = 5
 	mrd = 30
 }
}
home_server_pool utpool {
	home_server = ut-ibsng
}
realm ut {
	auth_pool = utpool
	nostrip
}
home_server_pool my_auth_failover {
	type = fail-over
	home_server = localhost
}
realm example.com {
	auth_pool = my_auth_failover
}
realm LOCAL {
}
radiusd: #### Loading Clients ####
client mehran {
	ipaddr = 2.180.36.206
	require_message_authenticator = no
	secret = <<< secret >>>
 limit {
 	max_connections = 16
 	lifetime = 0
 	idle_timeout = 30
 }
}
client radsecproxy {
	ipaddr = 127.0.0.1
	require_message_authenticator = no
	secret = <<< secret >>>
 limit {
 	max_connections = 16
 	lifetime = 0
 	idle_timeout = 30
 }
}
Debugger not attached
# Creating Auth-Type = PAP
# Creating Auth-Type = eap
radiusd: #### Instantiating modules ####
modules {
 # Loaded module rlm_realm
 # Loading module "IPASS" from file /etc/freeradius/mods-enabled/realm
 realm IPASS {
 	format = "prefix"
 	delimiter = "/"
 	ignore_default = no
 	ignore_null = no
 }
 # Loading module "suffix" from file /etc/freeradius/mods-enabled/realm
 realm suffix {
 	format = "suffix"
 	delimiter = "@"
 	ignore_default = no
 	ignore_null = no
 }
 # Loading module "realmpercent" from file /etc/freeradius/mods-enabled/realm
 realm realmpercent {
 	format = "suffix"
 	delimiter = "%"
 	ignore_default = no
 	ignore_null = no
 }
 # Loading module "ntdomain" from file /etc/freeradius/mods-enabled/realm
 realm ntdomain {
 	format = "prefix"
 	delimiter = "\\"
 	ignore_default = no
 	ignore_null = no
 }
 # Loaded module rlm_files
 # Loading module "files" from file /etc/freeradius/mods-enabled/files
 files {
 	filename = "/etc/freeradius/mods-config/files/authorize"
 	acctusersfile = "/etc/freeradius/mods-config/files/accounting"
 	preproxy_usersfile = "/etc/freeradius/mods-config/files/pre-proxy"
 }
 # Loaded module rlm_expiration
 # Loading module "expiration" from file /etc/freeradius/mods-enabled/expiration
 # Loaded module rlm_exec
 # Loading module "ntlm_auth" from file /etc/freeradius/mods-enabled/ntlm_auth
 exec ntlm_auth {
 	wait = yes
 	program = "/path/to/ntlm_auth --request-nt-key --domain=MYDOMAIN --username=%{mschap:User-Name} --password=%{User-Password}"
 	shell_escape = yes
 }
 # Loaded module rlm_detail
 # Loading module "auth_log" from file /etc/freeradius/mods-enabled/detail.log
 detail auth_log {
 	filename = "/var/log/freeradius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/auth-detail-%Y%m%d"
 	header = "%t"
 	permissions = 384
 	locking = no
 	escape_filenames = no
 	log_packet_header = no
 }
 # Loading module "reply_log" from file /etc/freeradius/mods-enabled/detail.log
 detail reply_log {
 	filename = "/var/log/freeradius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/reply-detail-%Y%m%d"
 	header = "%t"
 	permissions = 384
 	locking = no
 	escape_filenames = no
 	log_packet_header = no
 }
 # Loading module "pre_proxy_log" from file /etc/freeradius/mods-enabled/detail.log
 detail pre_proxy_log {
 	filename = "/var/log/freeradius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/pre-proxy-detail-%Y%m%d"
 	header = "%t"
 	permissions = 384
 	locking = no
 	escape_filenames = no
 	log_packet_header = no
 }
 # Loading module "post_proxy_log" from file /etc/freeradius/mods-enabled/detail.log
 detail post_proxy_log {
 	filename = "/var/log/freeradius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/post-proxy-detail-%Y%m%d"
 	header = "%t"
 	permissions = 384
 	locking = no
 	escape_filenames = no
 	log_packet_header = no
 }
 # Loaded module rlm_unix
 # Loading module "unix" from file /etc/freeradius/mods-enabled/unix
 unix {
 	radwtmp = "/var/log/freeradius/radwtmp"
 }
Creating attribute Unix-Group
 # Loaded module rlm_linelog
 # Loading module "linelog" from file /etc/freeradius/mods-enabled/linelog
 linelog {
 	filename = "/var/log/freeradius/linelog"
 	escape_filenames = no
 	syslog_severity = "info"
 	permissions = 384
 	format = "This is a log message for %{User-Name}"
 	reference = "messages.%{%{reply:Packet-Type}:-default}"
 }
 # Loading module "log_accounting" from file /etc/freeradius/mods-enabled/linelog
 linelog log_accounting {
 	filename = "/var/log/freeradius/linelog-accounting"
 	escape_filenames = no
 	syslog_severity = "info"
 	permissions = 384
 	format = ""
 	reference = "Accounting-Request.%{%{Acct-Status-Type}:-unknown}"
 }
 # Loaded module rlm_dynamic_clients
 # Loading module "dynamic_clients" from file /etc/freeradius/mods-enabled/dynamic_clients
 # Loaded module rlm_radutmp
 # Loading module "sradutmp" from file /etc/freeradius/mods-enabled/sradutmp
 radutmp sradutmp {
 	filename = "/var/log/freeradius/sradutmp"
 	username = "%{User-Name}"
 	case_sensitive = yes
 	check_with_nas = yes
 	permissions = 420
 	caller_id = no
 }
 # Loaded module rlm_digest
 # Loading module "digest" from file /etc/freeradius/mods-enabled/digest
 # Loading module "detail" from file /etc/freeradius/mods-enabled/detail
 detail {
 	filename = "/var/log/freeradius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/detail-%Y%m%d"
 	header = "%t"
 	permissions = 384
 	locking = no
 	escape_filenames = no
 	log_packet_header = no
 }
 # Loaded module rlm_expr
 # Loading module "expr" from file /etc/freeradius/mods-enabled/expr
 expr {
 	safe_characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /äéöüàâæçèéêëîïôœùûüaÿÄÉÖÜßÀÂÆÇÈÉÊËÎÏÔŒÙÛÜŸ"
 }
 # Loaded module rlm_soh
 # Loading module "soh" from file /etc/freeradius/mods-enabled/soh
 soh {
 	dhcp = yes
 }
 # Loaded module rlm_unpack
 # Loading module "unpack" from file /etc/freeradius/mods-enabled/unpack
 # Loaded module rlm_eap
 # Loading module "eap" from file /etc/freeradius/mods-enabled/eap
 eap {
 	default_eap_type = "ttls"
 	timer_expire = 60
 	ignore_unknown_eap_types = yes
 	cisco_accounting_username_bug = no
 	max_sessions = 16384
 }
 # Loaded module rlm_replicate
 # Loading module "replicate" from file /etc/freeradius/mods-enabled/replicate
 # Loaded module rlm_cache
 # Loading module "cache_eap" from file /etc/freeradius/mods-enabled/cache_eap
 cache cache_eap {
 	driver = "rlm_cache_rbtree"
 	key = "%{%{control:State}:-%{%{reply:State}:-%{State}}}"
 	ttl = 15
 	max_entries = 0
 	epoch = 0
 	add_stats = no
 }
 # Loaded module rlm_pap
 # Loading module "pap" from file /etc/freeradius/mods-enabled/pap
 pap {
 	normalise = yes
 }
 # Loaded module rlm_passwd
 # Loading module "etc_passwd" from file /etc/freeradius/mods-enabled/passwd
 passwd etc_passwd {
 	filename = "/etc/passwd"
 	format = "*User-Name:Crypt-Password:"
 	delimiter = ":"
 	ignore_nislike = no
 	ignore_empty = yes
 	allow_multiple_keys = no
 	hash_size = 100
 }
 # Loading module "radutmp" from file /etc/freeradius/mods-enabled/radutmp
 radutmp {
 	filename = "/var/log/freeradius/radutmp"
 	username = "%{User-Name}"
 	case_sensitive = yes
 	check_with_nas = yes
 	permissions = 384
 	caller_id = yes
 }
 # Loaded module rlm_always
 # Loading module "reject" from file /etc/freeradius/mods-enabled/always
 always reject {
 	rcode = "reject"
 	simulcount = 0
 	mpp = no
 }
 # Loading module "fail" from file /etc/freeradius/mods-enabled/always
 always fail {
 	rcode = "fail"
 	simulcount = 0
 	mpp = no
 }
 # Loading module "ok" from file /etc/freeradius/mods-enabled/always
 always ok {
 	rcode = "ok"
 	simulcount = 0
 	mpp = no
 }
 # Loading module "handled" from file /etc/freeradius/mods-enabled/always
 always handled {
 	rcode = "handled"
 	simulcount = 0
 	mpp = no
 }
 # Loading module "invalid" from file /etc/freeradius/mods-enabled/always
 always invalid {
 	rcode = "invalid"
 	simulcount = 0
 	mpp = no
 }
 # Loading module "userlock" from file /etc/freeradius/mods-enabled/always
 always userlock {
 	rcode = "userlock"
 	simulcount = 0
 	mpp = no
 }
 # Loading module "notfound" from file /etc/freeradius/mods-enabled/always
 always notfound {
 	rcode = "notfound"
 	simulcount = 0
 	mpp = no
 }
 # Loading module "noop" from file /etc/freeradius/mods-enabled/always
 always noop {
 	rcode = "noop"
 	simulcount = 0
 	mpp = no
 }
 # Loading module "updated" from file /etc/freeradius/mods-enabled/always
 always updated {
 	rcode = "updated"
 	simulcount = 0
 	mpp = no
 }
 # Loaded module rlm_mschap
 # Loading module "mschap" from file /etc/freeradius/mods-enabled/mschap
 mschap {
 	use_mppe = yes
 	require_encryption = no
 	require_strong = no
 	with_ntdomain_hack = yes
  passchange {
  }
 	allow_retry = yes
 }
 # Loading module "echo" from file /etc/freeradius/mods-enabled/echo
 exec echo {
 	wait = yes
 	program = "/bin/echo %{User-Name}"
 	input_pairs = "request"
 	output_pairs = "reply"
 	shell_escape = yes
 }
 # Loaded module rlm_chap
 # Loading module "chap" from file /etc/freeradius/mods-enabled/chap
 # Loaded module rlm_preprocess
 # Loading module "preprocess" from file /etc/freeradius/mods-enabled/preprocess
 preprocess {
 	huntgroups = "/etc/freeradius/mods-config/preprocess/huntgroups"
 	hints = "/etc/freeradius/mods-config/preprocess/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
 }
 # Loaded module rlm_utf8
 # Loading module "utf8" from file /etc/freeradius/mods-enabled/utf8
 # Loading module "exec" from file /etc/freeradius/mods-enabled/exec
 exec {
 	wait = no
 	input_pairs = "request"
 	shell_escape = yes
 	timeout = 10
 }
 # Loaded module rlm_attr_filter
 # Loading module "attr_filter.post-proxy" from file /etc/freeradius/mods-enabled/attr_filter
 attr_filter attr_filter.post-proxy {
 	filename = "/etc/freeradius/mods-config/attr_filter/post-proxy"
 	key = "%{Realm}"
 	relaxed = no
 }
 # Loading module "attr_filter.pre-proxy" from file /etc/freeradius/mods-enabled/attr_filter
 attr_filter attr_filter.pre-proxy {
 	filename = "/etc/freeradius/mods-config/attr_filter/pre-proxy"
 	key = "%{Realm}"
 	relaxed = no
 }
 # Loading module "attr_filter.access_reject" from file /etc/freeradius/mods-enabled/attr_filter
 attr_filter attr_filter.access_reject {
 	filename = "/etc/freeradius/mods-config/attr_filter/access_reject"
 	key = "%{User-Name}"
 	relaxed = no
 }
 # Loading module "attr_filter.access_challenge" from file /etc/freeradius/mods-enabled/attr_filter
 attr_filter attr_filter.access_challenge {
 	filename = "/etc/freeradius/mods-config/attr_filter/access_challenge"
 	key = "%{User-Name}"
 	relaxed = no
 }
 # Loading module "attr_filter.accounting_response" from file /etc/freeradius/mods-enabled/attr_filter
 attr_filter attr_filter.accounting_response {
 	filename = "/etc/freeradius/mods-config/attr_filter/accounting_response"
 	key = "%{User-Name}"
 	relaxed = no
 }
 # Loaded module rlm_logintime
 # Loading module "logintime" from file /etc/freeradius/mods-enabled/logintime
 logintime {
 	minimum_timeout = 60
 }
 instantiate {
 }
 # Instantiating module "IPASS" from file /etc/freeradius/mods-enabled/realm
 # Instantiating module "suffix" from file /etc/freeradius/mods-enabled/realm
 # Instantiating module "realmpercent" from file /etc/freeradius/mods-enabled/realm
 # Instantiating module "ntdomain" from file /etc/freeradius/mods-enabled/realm
 # Instantiating module "files" from file /etc/freeradius/mods-enabled/files
reading pairlist file /etc/freeradius/mods-config/files/authorize
reading pairlist file /etc/freeradius/mods-config/files/accounting
reading pairlist file /etc/freeradius/mods-config/files/pre-proxy
 # Instantiating module "expiration" from file /etc/freeradius/mods-enabled/expiration
 # Instantiating module "auth_log" from file /etc/freeradius/mods-enabled/detail.log
rlm_detail (auth_log): 'User-Password' suppressed, will not appear in detail output
 # Instantiating module "reply_log" from file /etc/freeradius/mods-enabled/detail.log
 # Instantiating module "pre_proxy_log" from file /etc/freeradius/mods-enabled/detail.log
 # Instantiating module "post_proxy_log" from file /etc/freeradius/mods-enabled/detail.log
 # Instantiating module "linelog" from file /etc/freeradius/mods-enabled/linelog
 # Instantiating module "log_accounting" from file /etc/freeradius/mods-enabled/linelog
 # Instantiating module "detail" from file /etc/freeradius/mods-enabled/detail
 # Instantiating module "eap" from file /etc/freeradius/mods-enabled/eap
  # Linked to sub-module rlm_eap_tls
  tls {
  	tls = "tls-common"
  }
  tls-config tls-common {
  	verify_depth = 0
  	ca_path = "/etc/freeradius/certs"
  	pem_file_type = yes
  	private_key_file = "/etc/freeradius/certs/server.pem"
  	certificate_file = "/etc/freeradius/certs/server.pem"
  	ca_file = "/etc/freeradius/certs/ca.pem"
  	private_key_password = <<< secret >>>
  	dh_file = "/etc/freeradius/certs/dh"
  	fragment_size = 1024
  	include_length = yes
  	auto_chain = yes
  	check_crl = no
  	check_all_crl = no
  	cipher_list = "DEFAULT"
  	ecdh_curve = "prime256v1"
   cache {
   	enable = yes
   	lifetime = 24
   	max_entries = 255
   }
   verify {
   	skip_if_ocsp_ok = no
   }
   ocsp {
   	enable = no
   	override_cert_url = yes
   	url = "http://127.0.0.1/ocsp/"
   	use_nonce = yes
   	timeout = 0
   	softfail = no
   }
  }
  # Linked to sub-module rlm_eap_ttls
  ttls {
  	tls = "tls-common"
  	default_eap_type = "PAP"
  	copy_request_to_tunnel = no
  	use_tunneled_reply = yes
  	virtual_server = "proxy-inner-tunnel"
  	include_length = yes
  	require_client_cert = no
  }
tls: Using cached TLS configuration from previous invocation
  # Linked to sub-module rlm_eap_gtc
  gtc {
  	challenge = "Password: "
  	auth_type = "PAP"
  }
 # Instantiating module "cache_eap" from file /etc/freeradius/mods-enabled/cache_eap
rlm_cache (cache_eap): Driver rlm_cache_rbtree (module rlm_cache_rbtree) loaded and linked
 # Instantiating module "pap" from file /etc/freeradius/mods-enabled/pap
 # Instantiating module "etc_passwd" from file /etc/freeradius/mods-enabled/passwd
rlm_passwd: nfields: 3 keyfield 0(User-Name) listable: no
 # Instantiating module "reject" from file /etc/freeradius/mods-enabled/always
 # Instantiating module "fail" from file /etc/freeradius/mods-enabled/always
 # Instantiating module "ok" from file /etc/freeradius/mods-enabled/always
 # Instantiating module "handled" from file /etc/freeradius/mods-enabled/always
 # Instantiating module "invalid" from file /etc/freeradius/mods-enabled/always
 # Instantiating module "userlock" from file /etc/freeradius/mods-enabled/always
 # Instantiating module "notfound" from file /etc/freeradius/mods-enabled/always
 # Instantiating module "noop" from file /etc/freeradius/mods-enabled/always
 # Instantiating module "updated" from file /etc/freeradius/mods-enabled/always
 # Instantiating module "mschap" from file /etc/freeradius/mods-enabled/mschap
rlm_mschap (mschap): using internal authentication
 # Instantiating module "preprocess" from file /etc/freeradius/mods-enabled/preprocess
reading pairlist file /etc/freeradius/mods-config/preprocess/huntgroups
reading pairlist file /etc/freeradius/mods-config/preprocess/hints
 # Instantiating module "attr_filter.post-proxy" from file /etc/freeradius/mods-enabled/attr_filter
reading pairlist file /etc/freeradius/mods-config/attr_filter/post-proxy
 # Instantiating module "attr_filter.pre-proxy" from file /etc/freeradius/mods-enabled/attr_filter
reading pairlist file /etc/freeradius/mods-config/attr_filter/pre-proxy
 # Instantiating module "attr_filter.access_reject" from file /etc/freeradius/mods-enabled/attr_filter
reading pairlist file /etc/freeradius/mods-config/attr_filter/access_reject
[/etc/freeradius/mods-config/attr_filter/access_reject]:11 Check item "FreeRADIUS-Response-Delay" 	found in filter list for realm "DEFAULT". 
[/etc/freeradius/mods-config/attr_filter/access_reject]:11 Check item "FreeRADIUS-Response-Delay-USec" 	found in filter list for realm "DEFAULT". 
 # Instantiating module "attr_filter.access_challenge" from file /etc/freeradius/mods-enabled/attr_filter
reading pairlist file /etc/freeradius/mods-config/attr_filter/access_challenge
 # Instantiating module "attr_filter.accounting_response" from file /etc/freeradius/mods-enabled/attr_filter
reading pairlist file /etc/freeradius/mods-config/attr_filter/accounting_response
 # Instantiating module "logintime" from file /etc/freeradius/mods-enabled/logintime
} # modules
radiusd: #### Loading Virtual Servers ####
server { # from file /etc/freeradius/radiusd.conf
} # server
server default { # from file /etc/freeradius/sites-enabled/default
# Loading authenticate {...}
# Loading authorize {...}
# Loading preacct {...}
# Loading accounting {...}
Ignoring "sql" (see raddb/mods-available/README.rst)
# Loading pre-proxy {...}
# Loading post-proxy {...}
# Loading post-auth {...}
} # server default
server proxy-inner-tunnel { # from file /etc/freeradius/sites-enabled/proxy-inner-tunnel
# Loading authenticate {...}
# Loading authorize {...}
# Loading post-proxy {...}
} # server proxy-inner-tunnel
radiusd: #### Opening IP addresses and Ports ####
listen {
 	type = "auth"
 	ipaddr = *
 	port = 1820
  limit {
  	max_connections = 16
  	lifetime = 0
  	idle_timeout = 30
  }
}
listen {
 	type = "acct"
 	ipaddr = *
 	port = 1821
  limit {
  	max_connections = 16
  	lifetime = 0
  	idle_timeout = 30
  }
}
listen {
 	type = "auth"
 	ipv6addr = ::
 	port = 1820
  limit {
  	max_connections = 16
  	lifetime = 0
  	idle_timeout = 30
  }
}
listen {
 	type = "acct"
 	ipv6addr = ::
 	port = 1821
  limit {
  	max_connections = 16
  	lifetime = 0
  	idle_timeout = 30
  }
}
Listening on auth address * port 1820 bound to server default
Listening on acct address * port 1821 bound to server default
Listening on auth address :: port 1820 bound to server default
Listening on acct address :: port 1821 bound to server default
Listening on proxy address * port 46929
Listening on proxy address :: port 43664
Ready to process requests


And here is access-request:
Received Access-Request Id 78 from 127.0.0.1:51273 to 127.0.0.1:1820 length 381
(5)   User-Name = "neda.divsalar@ut.ac.ir"
(5)   Service-Type = Framed-User
(5)   Cisco-AVPair = "service-type=Framed"
(5)   Framed-MTU = 1449
(5)   Called-Station-Id = "74-a0-2f-fc-24-b0:EduRoam"
(5)   Calling-Station-Id = "60-92-17-1E-BB-36"
(5)   EAP-Message = 0x0206004f15800000004517030100400739d36efe8a02fbcfc11117ef77be9721ab8334795f67cfacb20b46543320231334fe81da0e56c1c57213dd6ce49e93a0996567f0f7ac8af6212a7eaef4f3af
(5)   Message-Authenticator = 0x451491865326093e261d7acec62c2c8b
(5)   Cisco-AVPair = "audit-session-id=ac13040257a1b97b0009cac1"
(5)   Cisco-AVPair = "method=dot1x"
(5)   NAS-IP-Address = 172.19.4.2
(5)   NAS-Port-Id = "Capwap1"
(5)   NAS-Port-Type = Wireless-802.11
(5)   State = 0x57ac0bea53aa1ecc562ac00250a74721
(5)   Airespace-Wlan-Id = 42
(5)   Cisco-AVPair = "cisco-wlan-ssid=EduRoam"
(5) session-state: No cached attributes
(5) # Executing section authorize from file /etc/freeradius/sites-enabled/default
(5)   authorize {
(5)     policy filter_username {
(5)       if (&User-Name) {
(5)       if (&User-Name)  -> TRUE
(5)       if (&User-Name)  {
(5)         if (&User-Name =~ / /) {
(5)         if (&User-Name =~ / /)  -> FALSE
(5)         if (&User-Name =~ /@[^@]*@/ ) {
(5)         if (&User-Name =~ /@[^@]*@/ )  -> FALSE
(5)         if (&User-Name =~ /\.\./ ) {
(5)         if (&User-Name =~ /\.\./ )  -> FALSE
(5)         if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/))  {
(5)         if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/))   -> FALSE
(5)         if (&User-Name =~ /\.$/)  {
(5)         if (&User-Name =~ /\.$/)   -> FALSE
(5)         if (&User-Name =~ /@\./)  {
(5)         if (&User-Name =~ /@\./)   -> FALSE
(5)       } # if (&User-Name)  = notfound
(5)     } # policy filter_username = notfound
(5)     [preprocess] = ok
(5) suffix: Checking for suffix after "@"
(5) suffix: Looking up realm "ut.ac.ir" for User-Name = "neda.divsalar@ut.ac.ir"
(5) suffix: No such realm "ut.ac.ir"
(5)     [suffix] = noop
(5) eap: Peer sent EAP Response (code 2) ID 6 length 79
(5) eap: Continuing tunnel setup
(5)     [eap] = ok
(5)   } # authorize = ok
(5) Found Auth-Type = eap
(5) # Executing group from file /etc/freeradius/sites-enabled/default
(5)   authenticate {
(5) eap: Expiring EAP session with state 0x57ac0bea53aa1ecc
(5) eap: Finished EAP session with state 0x57ac0bea53aa1ecc
(5) eap: Previous EAP request found for state 0x57ac0bea53aa1ecc, released from the list
(5) eap: Peer sent packet with method EAP TTLS (21)
(5) eap: Calling submodule eap_ttls to process data
(5) eap_ttls: Authenticate
(5) eap_ttls: Continuing EAP-TLS
(5) eap_ttls: Peer indicated complete TLS record size will be 69 bytes
(5) eap_ttls: Got complete TLS record (69 bytes)
(5) eap_ttls: [eaptls verify] = length included
(5) eap_ttls: [eaptls process] = ok
(5) eap_ttls: Session established.  Proceeding to decode tunneled attributes
(5) eap_ttls: Got tunneled request
(5) eap_ttls:   EAP-Message = 0x0200001b016e6564612e64697673616c61724075742e61632e6972
(5) eap_ttls:   FreeRADIUS-Proxied-To = 127.0.0.1
(5) eap_ttls: Got tunneled identity of neda.divsalar@ut.ac.ir
(5) eap_ttls: Sending tunneled request
(5) Virtual server proxy-inner-tunnel received request
(5)   EAP-Message = 0x0200001b016e6564612e64697673616c61724075742e61632e6972
(5)   FreeRADIUS-Proxied-To = 127.0.0.1
(5)   User-Name = "neda.divsalar@ut.ac.ir"
(5) WARNING: Outer and inner identities are the same.  User privacy is compromised.
(5) server proxy-inner-tunnel {
(5)   # Executing section authorize from file /etc/freeradius/sites-enabled/proxy-inner-tunnel
(5)     authorize {
(5)       update control {
(5)         &Proxy-To-Realm := "ut"
(5)       } # update control = noop
(5)     } # authorize = noop
(5) } # server proxy-inner-tunnel
(5) Virtual server sending reply
(5) eap_ttls: Tunneled authentication will be proxied to ut
(5) eap: Tunneled session will be proxied.  Not doing EAP
(5)     [eap] = handled
(5)   } # authenticate = handled
(5) # Executing section pre-proxy from file /etc/freeradius/sites-enabled/default
(5)   pre-proxy {
(5) attr_filter.pre-proxy: EXPAND %{Realm}
(5) attr_filter.pre-proxy:    --> ut
(5) attr_filter.pre-proxy: Matched entry DEFAULT at line 50
(5)     [attr_filter.pre-proxy] = updated
(5)   } # pre-proxy = updated
(5) Proxying request to home server 172.16.16.29 port 1812 timeout 30.000000
(5) Sent Access-Request Id 129 from 0.0.0.0:46929 to 172.16.16.29:1812 length 101
(5)   NAS-Port := 0
(5)   EAP-Message = 0x0200001b016e6564612e64697673616c61724075742e61632e6972
(5)   User-Name = "neda.divsalar@ut.ac.ir"
(5)   Message-Authenticator = 0x
(5)   Proxy-State = 0x3738
Waking up in 0.3 seconds.
(5) Marking home server 172.16.16.29 port 1812 alive
(5) Clearing existing &reply: attributes
(5) Received Access-Accept Id 129 from 172.16.16.29:1812 to 172.16.16.174:46929 length 42
(5)   Proxy-State = 0x3738
(5)   Acct-Interim-Interval = 60
(5)   Service-Type = Framed-User
(5)   Framed-Protocol = PPP
(5) # Executing section post-proxy from file /etc/freeradius/sites-enabled/default
(5)   post-proxy {
(5) eap: Doing post-proxy callback
(5) eap: Passing reply from proxy back into the tunnel
server proxy-inner-tunnel {
(5) eap: post-auth returns 2
} # server proxy-inner-tunnel
(5) eap: Final reply from tunneled session code 2
(5) eap:   Proxy-State = 0x3738
(5) eap:   Acct-Interim-Interval = 60
(5) eap:   Service-Type = Framed-User
(5) eap:   Framed-Protocol = PPP
(5) eap: Got reply 2
(5) eap: Got tunneled Access-Accept
(5) eap: Reply was OK
(5) eap: No information to cache: session caching will be disabled for session 8ca2fe46dcd5d29e2c2614a30163e41427825b311d419ca1bfe47e4b940eb0e6
(5) eap: Sending EAP Success (code 3) ID 6 length 4
(5) eap: Freeing handler
(5)     [eap] = ok
(5)   } # post-proxy = ok
(5) Found Auth-Type = eap
(5) Found Auth-Type = Accept
(5) ERROR: Warning:  Found 2 auth-types on request for user 'neda.divsalar@ut.ac.ir'
(5) Auth-Type = Accept, accepting the user
(5) # Executing section post-auth from file /etc/freeradius/sites-enabled/default
(5)   post-auth {
(5)     update {
(5)       No attributes updated
(5)     } # update = noop
(5)     [exec] = noop
(5)     policy remove_reply_message_if_eap {
(5)       if (&reply:EAP-Message && &reply:Reply-Message) {
(5)       if (&reply:EAP-Message && &reply:Reply-Message)  -> FALSE
(5)       else {
(5)         [noop] = noop
(5)       } # else = noop
(5)     } # policy remove_reply_message_if_eap = noop
(5)   } # post-auth = noop
(5) Sent Access-Accept Id 78 from 127.0.0.1:1820 to 127.0.0.1:51273 length 0
(5)   Acct-Interim-Interval = 60
(5)   Service-Type = Framed-User
(5)   Framed-Protocol = PPP
(5)   MS-MPPE-Recv-Key = 0x9d4140eccfea8cb931d954326345ada15d2925df4804908c546957c3ceaab222
(5)   MS-MPPE-Send-Key = 0xbdedc69648e6aab32a0b733a51cbae32fe8a1022907695ea2d7c647a758f1142
(5)   EAP-Message = 0x03060004
(5)   Message-Authenticator = 0x00000000000000000000000000000000
(5)   User-Name = "neda.divsalar@ut.ac.ir"
(5) Finished request

EAP-TTLS-PAP Doesn't send Clear-Password to proxy-innter-tunnel

Mehran Meidani