Hello. I want to use an external script (multiotp) for authentication in FreeRADIUS. I created a new module called multiotp that starts the external script... exec multiotp { wait = yes input_pairs = request output_pairs = reply program = "/etc/freeradius/multiotp/multiotp.php -log -debug '%{User-Name}' '%{User-Password}'" shell_escape = yes } ...and activated this module in the authentication-section of the default-configuration (and also in the inner-tunnel-configuration): authenticate { [...] Auth-Type MultiOTP { update reply { Reply-Message = "Hello, %{User-Name}" } multiotp } [...] } The external script gives me additional informations (like "OK: Token accepted", "INFO: Authentication failed" etc.) after authentication. When I run freeradius in debug mode, I can see the output-message from the external script: [...] Exec-Program output: 0 OK: Token accepted Exec-Program-Wait: plaintext: 0 OK: Token accepted Exec-Program: returned: 0 ++[multiotp] returns ok Login OK: [test] (from client localhost port 0) [...] Is it possible to use this output-message as the reply-message ? Thanks. Stefan P.S. This is the complete output from freeradius -X: /usr/sbin/freeradius -X FreeRADIUS Version 2.1.10, for host x86_64-pc-linux-gnu, built on Sep 11 2012 at 17:06:46 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/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/detail.example.com including configuration file /etc/freeradius/modules/mac2ip including configuration file /etc/freeradius/modules/checkval including configuration file /etc/freeradius/modules/sql_log including configuration file /etc/freeradius/modules/opendirectory including configuration file /etc/freeradius/modules/radutmp including configuration file /etc/freeradius/modules/exec including configuration file /etc/freeradius/modules/digest including configuration file /etc/freeradius/modules/sqlcounter_expire_on_login including configuration file /etc/freeradius/modules/policy including configuration file /etc/freeradius/modules/mac2vlan including configuration file /etc/freeradius/modules/realm including configuration file /etc/freeradius/modules/expr including configuration file /etc/freeradius/modules/preprocess including configuration file /etc/freeradius/modules/logintime including configuration file /etc/freeradius/modules/files including configuration file /etc/freeradius/modules/otp including configuration file /etc/freeradius/modules/dynamic_clients including configuration file /etc/freeradius/modules/detail including configuration file /etc/freeradius/modules/ippool including configuration file /etc/freeradius/modules/unix including configuration file /etc/freeradius/modules/passwd including configuration file /etc/freeradius/modules/etc_group including configuration file /etc/freeradius/modules/smbpasswd including configuration file /etc/freeradius/modules/chap including configuration file /etc/freeradius/modules/krb5 including configuration file /etc/freeradius/modules/cui including configuration file /etc/freeradius/modules/pap including configuration file /etc/freeradius/modules/acct_unique including configuration file /etc/freeradius/modules/linelog including configuration file /etc/freeradius/modules/wimax including configuration file /etc/freeradius/modules/echo including configuration file /etc/freeradius/modules/attr_rewrite including configuration file /etc/freeradius/modules/pam including configuration file /etc/freeradius/modules/expiration including configuration file /etc/freeradius/modules/attr_filter including configuration file /etc/freeradius/modules/ldap including configuration file /etc/freeradius/modules/multiotp including configuration file /etc/freeradius/modules/smsotp including configuration file /etc/freeradius/modules/mschap including configuration file /etc/freeradius/modules/always including configuration file /etc/freeradius/modules/detail.log including configuration file /etc/freeradius/modules/perl including configuration file /etc/freeradius/modules/sradutmp including configuration file /etc/freeradius/modules/counter including configuration file /etc/freeradius/modules/ntlm_auth including configuration file /etc/freeradius/modules/inner-eap including configuration file /etc/freeradius/eap.conf including configuration file /etc/freeradius/policy.conf including files in directory /etc/freeradius/sites-enabled/ including configuration file /etc/freeradius/sites-enabled/default including configuration file /etc/freeradius/sites-enabled/inner-tunnel main { user = "freerad" group = "freerad" allow_core_dumps = no } 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 pidfile = "/var/run/freeradius/freeradius.pid" checkrad = "/usr/sbin/checkrad" debug_level = 0 proxy_requests = yes log { stripped_names = no auth = yes auth_badpass = no auth_goodpass = no } security { max_attributes = 200 reject_delay = 1 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 localhost { ipaddr = 127.0.0.1 port = 1812 type = "auth" secret = "testing123" response_window = 20 max_outstanding = 65536 require_message_authenticator = yes 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 irt = 2 mrt = 16 mrc = 5 mrd = 30 } 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 localhost { ipaddr = 127.0.0.1 require_message_authenticator = no secret = "testing123" nastype = "other" } radiusd: #### Instantiating modules #### instantiate { Module: Linked to module rlm_exec Module: Instantiating module "exec" from file /etc/freeradius/modules/exec exec { wait = no input_pairs = "request" shell_escape = yes } Module: Linked to module rlm_expr Module: Instantiating module "expr" from file /etc/freeradius/modules/expr Module: Linked to module rlm_expiration Module: Instantiating module "expiration" from file /etc/freeradius/modules/expiration expiration { reply-message = "Password Has Expired " } Module: Linked to module rlm_logintime Module: Instantiating module "logintime" from file /etc/freeradius/modules/logintime logintime { reply-message = "You are calling outside your allowed timespan " minimum-timeout = 60 } } radiusd: #### Loading Virtual Servers #### server inner-tunnel { # from file /etc/freeradius/sites-enabled/inner-tunnel modules { Module: Checking authenticate {...} for more modules to load Module: Linked to module rlm_pap Module: Instantiating module "pap" from file /etc/freeradius/modules/pap pap { encryption_scheme = "auto" auto_header = no } Module: Linked to module rlm_chap Module: Instantiating module "chap" from file /etc/freeradius/modules/chap Module: Linked to module rlm_mschap Module: Instantiating module "mschap" from file /etc/freeradius/modules/mschap mschap { use_mppe = yes require_encryption = no require_strong = no with_ntdomain_hack = no } Module: Linked to module rlm_pam Module: Instantiating module "pam" from file /etc/freeradius/modules/pam pam { pam_auth = "radiusd" } Module: Linked to module rlm_unix Module: Instantiating module "unix" from file /etc/freeradius/modules/unix unix { radwtmp = "/var/log/freeradius/radwtmp" } Module: Linked to module rlm_eap Module: Instantiating module "eap" from file /etc/freeradius/eap.conf eap { default_eap_type = "md5" timer_expire = 60 ignore_unknown_eap_types = no cisco_accounting_username_bug = no max_sessions = 4096 } 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 CA_path = "/etc/freeradius/certs" pem_file_type = yes private_key_file = "/etc/freeradius/certs/server.key" certificate_file = "/etc/freeradius/certs/server.pem" CA_file = "/etc/freeradius/certs/ca.pem" private_key_password = "whatever" dh_file = "/etc/freeradius/certs/dh" random_file = "/dev/urandom" fragment_size = 1024 include_length = yes check_crl = no cipher_list = "DEFAULT" make_cert_command = "/etc/freeradius/certs/bootstrap" cache { enable = no lifetime = 24 max_entries = 255 } verify { } } 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: Instantiating module "multiotp" from file /etc/freeradius/modules/multiotp exec multiotp { wait = yes program = "/etc/freeradius/multiotp/multiotp.php -log -debug '%{User-Name}' '%{User-Password}'" input_pairs = "request" output_pairs = "reply" shell_escape = yes } Module: Checking authorize {...} for more modules to load Module: Linked to module rlm_realm Module: Instantiating module "suffix" from file /etc/freeradius/modules/realm realm suffix { format = "suffix" delimiter = "@" ignore_default = no ignore_null = no } Module: Linked to module rlm_files Module: Instantiating module "files" from file /etc/freeradius/modules/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 module "radutmp" from file /etc/freeradius/modules/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 module "attr_filter.access_reject" from file /etc/freeradius/modules/attr_filter attr_filter attr_filter.access_reject { attrsfile = "/etc/freeradius/attrs.access_reject" key = "%{User-Name}" } } # modules } # server server { # from file /etc/freeradius/radiusd.conf modules { Module: Checking authenticate {...} for more modules to load Module: Linked to module rlm_digest Module: Instantiating module "digest" from file /etc/freeradius/modules/digest Module: Checking authorize {...} for more modules to load Module: Linked to module rlm_preprocess Module: Instantiating module "preprocess" from file /etc/freeradius/modules/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 module "acct_unique" from file /etc/freeradius/modules/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 module "detail" from file /etc/freeradius/modules/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 module "attr_filter.accounting_response" from file /etc/freeradius/modules/attr_filter 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 } # modules } # server radiusd: #### Opening IP addresses and Ports #### listen { type = "auth" ipaddr = * port = 1812 } listen { type = "acct" ipaddr = * port = 1813 } listen { type = "auth" ipaddr = 127.0.0.1 port = 18120 } Listening on authentication address * port 1812 Listening on accounting address * port 1813 Listening on authentication address 127.0.0.1 port 18120 as server inner-tunnel Listening on proxy address * port 1814 Ready to process requests. rad_recv: Access-Request packet from host 127.0.0.1 port 44170, id=173, length=58 User-Name = "test" User-Password = "1234350368" NAS-IP-Address = 127.0.0.1 NAS-Port = 0 # Executing section authorize from file /etc/freeradius/sites-enabled/default +- entering group authorize {...} ++[preprocess] returns ok ++[chap] returns noop ++[mschap] returns noop ++[digest] returns noop [suffix] No '@' in User-Name = "test", looking up realm NULL [suffix] No such realm "NULL" ++[suffix] returns noop [eap] No EAP-Message, not doing EAP ++[eap] returns noop [files] users: Matched entry test at line 1 ++[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 = MultiOTP # Executing group from file /etc/freeradius/sites-enabled/default +- entering group MultiOTP {...} expand: Hello, %{User-Name} -> Hello, test ++[reply] returns reject [multiotp] expand: '%{User-Name}' -> 'test' [multiotp] expand: '%{User-Password}' -> '1234350368' Exec-Program output: 0 OK: Token accepted Exec-Program-Wait: plaintext: 0 OK: Token accepted Exec-Program: returned: 0 ++[multiotp] returns ok Login OK: [test] (from client localhost port 0) # Executing section post-auth from file /etc/freeradius/sites-enabled/default +- entering group post-auth {...} ++[exec] returns noop Sending Access-Accept of id 173 to 127.0.0.1 port 44170 Class = 0x56504e2d53797374656d696e746567726174696f6e Reply-Message = "Hello, test" Finished request 0. Going to the next request Waking up in 4.9 seconds. Cleaning up request 0 ID 173 with timestamp +38 Ready to process requests.