Hello again, here is the info I collected concerning the “It still doesn’t work” section: ***** FreeRADIUS-proxy ************************************************ ***** users: Standard entry of localhost and DEFAULT Proxy-To-Realm := "RADIUS_REALM" ***** clients.conf: client 192.168.1.58 { secret = testing123 } ***** debug: 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 allow_core_dumps = no pidfile = "/var/run/freeradius/freeradius.pid" user = "freerad" group = "freerad" checkrad = "/usr/sbin/checkrad" debug_level = 0 proxy_requests = yes security { max_attributes = 200 reject_delay = 1 status_server = yes } } client localhost { ipaddr = 127.0.0.1 require_message_authenticator = no secret = "testing123" nastype = "other" } client 192.168.1.58 { require_message_authenticator = no secret = "testing123" } 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 RADIUS_SERVER { ipaddr = 192.168.1.61 port = 1812 type = "auth" secret = "testing123" response_window = 20 max_outstanding = 65536 zombie_period = 40 status_check = "request" ping_check = "none" ping_interval = 30 check_interval = 30 num_answers_to_alive = 3 num_pings_to_alive = 3 revive_interval = 120 status_check_timeout = 4 } home_server_pool RADIUS_SERVER_POOL { type = fail-over home_server = RADIUS_SERVER } realm RADIUS_REALM { auth_pool = RADIUS_SERVER_POOL } radiusd: #### Instantiating modules #### instantiate { Module: Linked to module rlm_exec Module: Instantiating exec exec { wait = yes 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 inner-tunnel { modules { Module: Checking authenticate {...} for more modules to load Module: Linked to module rlm_pap Module: Instantiating pap pap { encryption_scheme = "auto" auto_header = no } Module: Linked to module rlm_chap Module: Instantiating chap Module: Linked to module rlm_mschap Module: Instantiating mschap mschap { use_mppe = yes require_encryption = no require_strong = no with_ntdomain_hack = no } Module: Linked to module rlm_unix Module: Instantiating unix unix { radwtmp = "/var/log/freeradius/radwtmp" } 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 } 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" } rlm_eap: Ignoring EAP-Type/tls because we do not have OpenSSL support. rlm_eap: Ignoring EAP-Type/ttls because we do not have OpenSSL support. rlm_eap: Ignoring EAP-Type/peap because we do not have OpenSSL support. 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_realm Module: Instantiating suffix realm suffix { format = "suffix" delimiter = "@" ignore_default = no ignore_null = no } Module: Linked to module rlm_files Module: Instantiating 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 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 attr_filter.access_reject attr_filter attr_filter.access_reject { attrsfile = "/etc/freeradius/attrs.access_reject" key = "%{User-Name}" } } } server { modules { Module: Checking authenticate {...} for more modules to load Module: Checking authorize {...} for more modules to load Module: Linked to module rlm_preprocess Module: Instantiating 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 Module: Linked to module rlm_preprocess Module: Instantiating 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 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 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 attr_filter.accounting_response 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 } } radiusd: #### Opening IP addresses and Ports #### listen { type = "proxy" ipaddr = 192.168.1.80 port = 1812 } main { snmp = no smux_password = "" snmp_write_access = no } Listening on proxy address 192.168.1.80 port 1812 Ready to process requests. radtest: Local on the proxy: radtest 00-3F-08-27-10-11 00-3f-08-27-10-11 192.168.1.80 1812 testing123 Logfile of proxy: Error: Invalid packet code 1 sent to a proxy port from home server 192.168.1.80 port 40341 - ID 96 : IGNORED From FR-server to proxy: 00-3F-08-27-10-11 00-3f-08-27-10-11 192.168.1.80 1812 testing123 Logfile of proxy: Error: Invalid packet code 1 sent to a proxy port from home server 192.168.1.61 port 42477 - ID 19 : IGNORED ***** FreeRADIUS-server ************************************************ ***** users: Standard entry of localhost ***** clients.conf: client 192.168.1.80 { secret = testing123 } The FreeRADIUS-Server runs fine. I tested it with radtest and with some clients connected to my switch. ***** Comment to the proxy.conf ************************************************ The switch was not configured as home server as you can see – that’s the weird thing. You said that the proxy port is 1814 but the authentication port 1812 is not used by the proxy, correct? Is it incorrect to use port 1812 to receive proxy requests when the switch sends it to 1812, too? Thank you for your help! Best regards, Raphael Brüngel