Proxy to realm after eap-ttls authantication
Mesut Ozturk
mesut at nevotek.com
Mon Nov 23 14:40:31 CET 2020
Hello,
I desperately need your help. I am noob with FreeRadius so please guide me what i am doing wrong.
My point is using freeradius as a Proxy. Because we already have a PAP supported Radius, so i want to do eap auth part on freeradius and then Proxy the Access-request to our own Radius. We are trying 802.1x authantication.
According to my readings i did below steps :
1 . Edit clients.conf for my mobile devices to Access freeradius
client nevotek {
ipaddr = 213.74.143.140
secret = testing1234
}
2. add home_server in proxy.conf
home_server IAS {
ipaddr = 192.168.0.252
port = 1812
type = "auth"
secret = "secret"
response_window = 20
max_outstanding = 65536
}
home_server_pool jack_pool {
type = fail-over
home_server = IAS
}
realm nevotek {
auth_pool = jack_pool
nostirp
}
3. edit eap.cof
default_eap_type = ttls
and in ttls function :
ttls {
default_eap_type = md5
copy_request_to_tunnel = no
use_tunneled_reply = yes
proxy_tunneled_request_as_eap = no
virtual_server = "proxy-inner-tunnel"
}
4. prepare Proxy.config soft link for sites-enabled, added nevotek in proxy-inner-tunnel:
server proxy-inner-tunnel {
authorize {
update control {
Proxy-To-Realm := "nevotek"
}
}
authenticate {
eap
}
post-proxy {
eap
}
}
5. disabled "suffix" part in sites-enabled/default
But no chance. Also android and IOS devices has different behaviors.
Here is the output of IOS device :
(2) Received Access-Request Id 216 from 213.74.143.148:19733 to 10.0.0.4:1812 length 311
(2) User-Name = "iosuser2 at nevotek.com"
(2) Chargeable-User-Identity = 0x00
(2) Operator-Name = "1nevotek.com"
(2) Location-Capable = Civic-Location
(2) Calling-Station-Id = "74-8d-08-b1-f2-17"
(2) Called-Station-Id = "58-f3-9c-43-52-a0:Nevotek"
(2) NAS-Port = 4
(2) Cisco-AVPair = "audit-session-id=0a0102e1000001205fbba08c"
(2) Acct-Session-Id = "5fbba08c/74:8d:08:b1:f2:17/352"
(2) NAS-IP-Address = 10.1.2.225
(2) NAS-Identifier = "aa5a6c45-b2c2-436b-90da-0ed2031"
(2) Airespace-Wlan-Id = 7
(2) Service-Type = Framed-User
(2) Framed-MTU = 1300
(2) NAS-Port-Type = Wireless-802.11
(2) EAP-Message = 0x020300061500
(2) State = 0xca8e79cacb8d6ce3fd1d37ee8f32d170
(2) Message-Authenticator = 0xc7b01c5b471b2eb70578f1dc7ed6e7ea
(2) session-state: No cached attributes
(2) # Executing section authorize from file /etc/freeradius/3.0/sites-enabled/default
(2) authorize {
(2) policy filter_username {
(2) if (&User-Name) {
(2) if (&User-Name) -> TRUE
(2) if (&User-Name) {
(2) if (&User-Name =~ / /) {
(2) if (&User-Name =~ / /) -> FALSE
(2) if (&User-Name =~ /@[^@]*@/ ) {
(2) if (&User-Name =~ /@[^@]*@/ ) -> FALSE
(2) if (&User-Name =~ /\.\./ ) {
(2) if (&User-Name =~ /\.\./ ) -> FALSE
(2) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/)) {
(2) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/)) -> FALSE
(2) if (&User-Name =~ /\.$/) {
(2) if (&User-Name =~ /\.$/) -> FALSE
(2) if (&User-Name =~ /@\./) {
(2) if (&User-Name =~ /@\./) -> FALSE
(2) } # if (&User-Name) = notfound
(2) } # policy filter_username = notfound
(2) [preprocess] = ok
(2) [chap] = noop
(2) [mschap] = noop
(2) [digest] = noop
(2) eap: Peer sent EAP Response (code 2) ID 3 length 6
(2) eap: Continuing tunnel setup
(2) [eap] = ok
(2) } # authorize = ok
(2) Found Auth-Type = eap
(2) # Executing group from file /etc/freeradius/3.0/sites-enabled/default
(2) authenticate {
(2) eap: Expiring EAP session with state 0xca8e79cacb8d6ce3
(2) eap: Finished EAP session with state 0xca8e79cacb8d6ce3
(2) eap: Previous EAP request found for state 0xca8e79cacb8d6ce3, released from the list
(2) eap: Peer sent packet with method EAP TTLS (21)
(2) eap: Calling submodule eap_ttls to process data
(2) eap_ttls: Authenticate
(2) eap_ttls: Continuing EAP-TLS
(2) eap_ttls: Peer ACKed our handshake fragment
(2) eap_ttls: [eaptls verify] = request
(2) eap_ttls: [eaptls process] = handled
(2) eap: Sending EAP Request (code 1) ID 4 length 336
(2) eap: EAP session adding &reply:State = 0xca8e79cac88a6ce3
(2) [eap] = handled
(2) } # authenticate = handled
(2) Using Post-Auth-Type Challenge
(2) # Executing group from file /etc/freeradius/3.0/sites-enabled/default
(2) Challenge { ... } # empty sub-section is ignored
(2) Sent Access-Challenge Id 216 from 10.0.0.4:1812 to 213.74.143.148:19733 length 0
(2) EAP-Message = 0x01040150158000000528d123b84f84592a0a7ccb12b23ec09a0c025464d3f258d5090bffa282b17870910449329f906380b0b4340ef2b6a1dc73e72d35763148b65bfc0401010038af8b17d95590598994e5ec35c96642e3e8fce291173f61b7e1ca06aa4b749dd3f2bbe12175a964524311069490e0f6
(2) Message-Authenticator = 0x00000000000000000000000000000000
(2) State = 0xca8e79cac88a6ce3fd1d37ee8f32d170
(2) Finished request
And here is the output of Android device :
(2) Received Access-Request Id 59 from 213.74.143.148:38031 to 10.0.0.4:1812 length 312
(2) User-Name = "anonymous at nevotek.com"
(2) Chargeable-User-Identity = 0x00
(2) Operator-Name = "1nevotek.com"
(2) Location-Capable = Civic-Location
(2) Calling-Station-Id = "04-b1-a1-53-4d-1e"
(2) Called-Station-Id = "58-f3-9c-43-52-a0:Nevotek"
(2) NAS-Port = 4
(2) Cisco-AVPair = "audit-session-id=0a0102e1000001275fbbbb17"
(2) Acct-Session-Id = "5fbbbb17/04:b1:a1:53:4d:1e/359"
(2) NAS-IP-Address = 10.1.2.225
(2) NAS-Identifier = "aa5a6c45-b2c2-436b-90da-0ed2031"
(2) Airespace-Wlan-Id = 7
(2) Service-Type = Framed-User
(2) Framed-MTU = 1300
(2) NAS-Port-Type = Wireless-802.11
(2) EAP-Message = 0x020300061500
(2) State = 0xd875f9c9d976ec270910ae6415adb475
(2) Message-Authenticator = 0xe92ebb9e5e7641c5515a25ae2ee50929
(2) session-state: No cached attributes
(2) # Executing section authorize from file /etc/freeradius/3.0/sites-enabled/default
(2) authorize {
(2) policy filter_username {
(2) if (&User-Name) {
(2) if (&User-Name) -> TRUE
(2) if (&User-Name) {
(2) if (&User-Name =~ / /) {
(2) if (&User-Name =~ / /) -> FALSE
(2) if (&User-Name =~ /@[^@]*@/ ) {
(2) if (&User-Name =~ /@[^@]*@/ ) -> FALSE
(2) if (&User-Name =~ /\.\./ ) {
(2) if (&User-Name =~ /\.\./ ) -> FALSE
(2) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/)) {
(2) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/)) -> FALSE
(2) if (&User-Name =~ /\.$/) {
(2) if (&User-Name =~ /\.$/) -> FALSE
(2) if (&User-Name =~ /@\./) {
(2) if (&User-Name =~ /@\./) -> FALSE
(2) } # if (&User-Name) = notfound
(2) } # policy filter_username = notfound
(2) [preprocess] = ok
(2) [chap] = noop
(2) [mschap] = noop
(2) [digest] = noop
(2) eap: Peer sent EAP Response (code 2) ID 3 length 6
(2) eap: Continuing tunnel setup
(2) [eap] = ok
(2) } # authorize = ok
(2) Found Auth-Type = eap
(2) # Executing group from file /etc/freeradius/3.0/sites-enabled/default
(2) authenticate {
(2) eap: Expiring EAP session with state 0xd875f9c9d976ec27
(2) eap: Finished EAP session with state 0xd875f9c9d976ec27
(2) eap: Previous EAP request found for state 0xd875f9c9d976ec27, released from the list
(2) eap: Peer sent packet with method EAP TTLS (21)
(2) eap: Calling submodule eap_ttls to process data
(2) eap_ttls: Authenticate
(2) eap_ttls: Continuing EAP-TLS
(2) eap_ttls: Peer ACKed our handshake fragment
(2) eap_ttls: [eaptls verify] = request
(2) eap_ttls: [eaptls process] = handled
(2) eap: Sending EAP Request (code 1) ID 4 length 336
(2) eap: EAP session adding &reply:State = 0xd875f9c9da71ec27
(2) [eap] = handled
(2) } # authenticate = handled
(2) Using Post-Auth-Type Challenge
(2) # Executing group from file /etc/freeradius/3.0/sites-enabled/default
(2) Challenge { ... } # empty sub-section is ignored
(2) Sent Access-Challenge Id 59 from 10.0.0.4:1812 to 213.74.143.148:38031 length 0
(2) EAP-Message = 0x01040150158000000528a2e03207e6a1163699a1cff7af74692beaafff15b2a3033c4d0238dd7014db04f7f40d669da91832dd39bbdbfca1bdb456f26f4a981b5a820108040100b7a20cf24aad9d35b94575b849f9e8ef528d1b13e7caea59f3cc578845763a601b7fceb8ffda9d989423730b5ea4c0f3
(2) Message-Authenticator = 0x00000000000000000000000000000000
(2) State = 0xd875f9c9da71ec270910ae6415adb475
(2) Finished request
Waking up in 4.3 seconds.
(3) Received Access-Request Id 60 from 213.74.143.148:38031 to 10.0.0.4:1812 length 319
(3) User-Name = "anonymous at nevotek.com"
(3) Chargeable-User-Identity = 0x00
(3) Operator-Name = "1nevotek.com"
(3) Location-Capable = Civic-Location
(3) Calling-Station-Id = "04-b1-a1-53-4d-1e"
(3) Called-Station-Id = "58-f3-9c-43-52-a0:Nevotek"
(3) NAS-Port = 4
(3) Cisco-AVPair = "audit-session-id=0a0102e1000001275fbbbb17"
(3) Acct-Session-Id = "5fbbbb17/04:b1:a1:53:4d:1e/359"
(3) NAS-IP-Address = 10.1.2.225
(3) NAS-Identifier = "aa5a6c45-b2c2-436b-90da-0ed2031"
(3) Airespace-Wlan-Id = 7
(3) Service-Type = Framed-User
(3) Framed-MTU = 1300
(3) NAS-Port-Type = Wireless-802.11
(3) EAP-Message = 0x0204000d150015030300020230
(3) State = 0xd875f9c9da71ec270910ae6415adb475
(3) Message-Authenticator = 0xbd27e9cbdb496b0f8072580915cabc5d
(3) session-state: No cached attributes
(3) # Executing section authorize from file /etc/freeradius/3.0/sites-enabled/default
(3) authorize {
(3) policy filter_username {
(3) if (&User-Name) {
(3) if (&User-Name) -> TRUE
(3) if (&User-Name) {
(3) if (&User-Name =~ / /) {
(3) if (&User-Name =~ / /) -> FALSE
(3) if (&User-Name =~ /@[^@]*@/ ) {
(3) if (&User-Name =~ /@[^@]*@/ ) -> FALSE
(3) if (&User-Name =~ /\.\./ ) {
(3) if (&User-Name =~ /\.\./ ) -> FALSE
(3) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/)) {
(3) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/)) -> FALSE
(3) if (&User-Name =~ /\.$/) {
(3) if (&User-Name =~ /\.$/) -> FALSE
(3) if (&User-Name =~ /@\./) {
(3) if (&User-Name =~ /@\./) -> FALSE
(3) } # if (&User-Name) = notfound
(3) } # policy filter_username = notfound
(3) [preprocess] = ok
(3) [chap] = noop
(3) [mschap] = noop
(3) [digest] = noop
(3) eap: Peer sent EAP Response (code 2) ID 4 length 13
(3) eap: Continuing tunnel setup
(3) [eap] = ok
(3) } # authorize = ok
(3) Found Auth-Type = eap
(3) # Executing group from file /etc/freeradius/3.0/sites-enabled/default
(3) authenticate {
(3) eap: Expiring EAP session with state 0xd875f9c9da71ec27
(3) eap: Finished EAP session with state 0xd875f9c9da71ec27
(3) eap: Previous EAP request found for state 0xd875f9c9da71ec27, released from the list
(3) eap: Peer sent packet with method EAP TTLS (21)
(3) eap: Calling submodule eap_ttls to process data
(3) eap_ttls: Authenticate
(3) eap_ttls: Continuing EAP-TLS
(3) eap_ttls: [eaptls verify] = ok
(3) eap_ttls: Done initial handshake
(3) eap_ttls: <<< recv TLS 1.2 [length 0002]
(3) eap_ttls: ERROR: TLS Alert read:fatal:unknown CA
(3) eap_ttls: TLS_accept: Need to read more data: error
(3) eap_ttls: ERROR: Failed in __FUNCTION__ (SSL_read): error:14094418:SSL routines:ssl3_read_bytes:tlsv1 alert unknown ca
(3) eap_ttls: In SSL Handshake Phase
(3) eap_ttls: In SSL Accept mode
(3) eap_ttls: SSL Application Data
(3) eap_ttls: ERROR: TLS failed during operation
(3) eap_ttls: ERROR: [eaptls process] = fail
(3) eap: ERROR: Failed continuing EAP TTLS (21) session. EAP sub-module failed
(3) eap: Sending EAP Failure (code 4) ID 4 length 4
(3) eap: Failed in EAP select
(3) [eap] = invalid
(3) } # authenticate = invalid
(3) Failed to authenticate the user
(3) Using Post-Auth-Type Reject
(3) # Executing group from file /etc/freeradius/3.0/sites-enabled/default
(3) Post-Auth-Type REJECT {
(3) attr_filter.access_reject: EXPAND %{User-Name}
(3) attr_filter.access_reject: --> anonymous at nevotek.com
(3) attr_filter.access_reject: Matched entry DEFAULT at line 11
(3) [attr_filter.access_reject] = updated
(3) [eap] = noop
(3) policy remove_reply_message_if_eap {
(3) if (&reply:EAP-Message && &reply:Reply-Message) {
(3) if (&reply:EAP-Message && &reply:Reply-Message) -> FALSE
(3) else {
(3) [noop] = noop
(3) } # else = noop
(3) } # policy remove_reply_message_if_eap = noop
(3) } # Post-Auth-Type REJECT = updated
(3) Delaying response for 1.000000 seconds
Waking up in 0.3 seconds.
Waking up in 0.6 seconds.
(3) Sending delayed response
(3) Sent Access-Reject Id 60 from 10.0.0.4:1812 to 213.74.143.148:38031 length 44
(3) EAP-Message = 0x04040004
(3) Message-Authenticator = 0x00000000000000000000000000000000
Waking up in 3.1 seconds.
(0) Cleaning up request packet ID 57 with timestamp +25
Waking up in 0.2 seconds.
(1) Cleaning up request packet ID 58 with timestamp +26
Waking up in 0.3 seconds.
(2) Cleaning up request packet ID 59 with timestamp +26
Waking up in 0.2 seconds.
(3) Cleaning up request packet ID 60 with timestamp +26
Regards.
[http://www.nevotek.com/nevotekmail/logo.png] Mesut Ozturk
R&D Senior Developer
P: +902122867576 E: mesut at nevotek.com
F: +902122867476 W: www.nevotek.com
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