Coa

This scenario shows how to enable CoA (Change of Authorization) in a device with 802.1x authentication.

../../../../../../_images/coa.svg

Test CoA Disconnect

Description

In this scenario, three parties are actively involved: an authenticator (DUT0), a supplicant (DUT1), and an authentication server (DUT2). Once the authentication is successfully performed, DUT2 sends a CoA/Disconnect message to terminate the active session.

Scenario

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.215.168.64/24
set interfaces ethernet eth1 802.1x authenticator aaa authentication list1
set interfaces ethernet eth1 802.1x authenticator coa client 10.215.168.1
set interfaces ethernet eth1 802.1x authenticator coa encrypted-secret U2FsdGVkX1/NTPfPKaNyVHAq+x6ftHNGTtfrcBPF17A=
set interfaces ethernet eth1 802.1x authenticator reauth-period 0
set interfaces ethernet eth1 address 192.168.100.1/24
set system aaa group radius radgroup1 server serv1
set system aaa list list1 method 1 group radius radgroup1
set system aaa server radius serv1 address 10.215.168.1
set system aaa server radius serv1 encrypted-key U2FsdGVkX19Cm2HL7XpK7m37/0y95UZuyrIDWOH6Fe3bIcTOBUni17FG7txZSVjTij3ZIFbMJ3Ut3bnahxVphQ==
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Ping IP address 10.215.168.1 from DUT0:

admin@DUT0$ ping 10.215.168.1 count 1 size 56 timeout 1
Show output
PING 10.215.168.1 (10.215.168.1) 56(84) bytes of data.
64 bytes from 10.215.168.1: icmp_seq=1 ttl=64 time=0.402 ms

--- 10.215.168.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.402/0.402/0.402/0.000 ms

Step 3: Set the following configuration in DUT1 :

set interfaces ethernet eth1 802.1x supplicant encrypted-password U2FsdGVkX1+F/B5DDQQDcFBYHddGfbYlXFJiIzy0/5U=
set interfaces ethernet eth1 802.1x supplicant username testing
set interfaces ethernet eth1 address 192.168.100.2/24
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 4: Run command interfaces ethernet eth1 802.1x supplicant show status at DUT1 and check if output contains the following tokens:

Authorized
Show output
---------------------------------------------------
        Field                      Value
---------------------------------------------------
EAP State                                   SUCCESS
EAP TLS Cipher          ECDHE-RSA-AES256-GCM-SHA384
EAP TLS Version                             TLSv1.2
PAE State                             AUTHENTICATED
Supplicant Port Status                   Authorized
WPA State                                 COMPLETED

Step 5: Run command interfaces ethernet eth1 802.1x supplicant show stats at DUT1 and check if output matches the following regular expressions:

Port Status\s+Authorized
Show output
-------------------------------
       Field           Value
-------------------------------
EAPoL Frames (Rx)            11
EAPoL Frames (Tx)            11
Invalid Frames (Rx)           0
Logoff Frames (Tx)            0
Port Status          Authorized
Req Frames (Rx)               9
Req ID Frames (Rx)            1
Resp Frames (Tx)             10
Start Frames (Tx)             1

Step 6: Run command interfaces ethernet eth1 802.1x authenticator show stats at DUT0 and check if output matches the following regular expressions:

Authentication Successes\s+1
Show output
---------------------------------
         Field             Value
---------------------------------
Access Challenges               9
Authentication Backend     RADIUS
Authentication Failures         0
Authentication Successes        1
EAPoL frames (Rx)              11
EAPoL frames (Tx)              11
Reauthenticate              FALSE
Reauthenticate Period           0
Session Time                    1
Session User Name         testing

Step 7: Ping IP address 192.168.100.1 from DUT1:

admin@DUT1$ ping 192.168.100.1 count 1 size 56 timeout 1
Show output
PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.
64 bytes from 192.168.100.1: icmp_seq=1 ttl=64 time=0.884 ms

--- 192.168.100.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.884/0.884/0.884/0.000 ms

Note

Send a CoA/Disconnect request from the RADIUS server On Linux, the FreeRADIUS package includes the utility radtest that can be used to send these messages:

Show output
$ cat /osdx-tests/utils/dot1x/auth.req
User-Name = "testing"
$ radclient -s -t 1 -r 1 10.215.168.64:3799 disconnect coa_secret -f /osdx-tests/utils/dot1x/auth.req
Sent Disconnect-Request Id 101 from 0.0.0.0:58178 to 10.215.168.64:3799 length 29
Received Disconnect-ACK Id 101 from 10.215.168.64:3799 to 10.215.168.1:58178 length 44
Packet summary:
      Accepted      : 1
      Rejected      : 0
      Lost          : 0
      Passed filter : 1
      Failed filter : 0

Warning

Since CoA/Disconnect was successful, DUT1 is no longer able to reach DUT0.

Step 8: Expect a failure in the following command: Ping IP address 192.168.100.1 from DUT1:

admin@DUT1$ ping 192.168.100.1 count 1 size 56 timeout 1
Show output
PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.

--- 192.168.100.1 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms

Test CoA Disconnect Unauthorized Client

Description

In this scenario, the DUT2 IP is not allowed in a DUT0 CoA configuration. The request is, therefore, rejected.

Scenario

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.215.168.64/24
set interfaces ethernet eth1 802.1x authenticator aaa authentication list1
set interfaces ethernet eth1 802.1x authenticator coa client 1.1.1.1
set interfaces ethernet eth1 802.1x authenticator coa encrypted-secret U2FsdGVkX1/aJ5rijq9UIp6xo1ZpYs499Zl43qVByRg=
set interfaces ethernet eth1 802.1x authenticator reauth-period 0
set interfaces ethernet eth1 address 192.168.100.1/24
set system aaa group radius radgroup1 server serv1
set system aaa list list1 method 1 group radius radgroup1
set system aaa server radius serv1 address 10.215.168.1
set system aaa server radius serv1 encrypted-key U2FsdGVkX1/8qV1g9/u0yvDQ+Zb3cVWG+nEd2Mqzyu/a+5vSDdSt4yJAeameOJpZMZp9Xd3dIJ1ee0ju2Kd3gw==
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Ping IP address 10.215.168.1 from DUT0:

admin@DUT0$ ping 10.215.168.1 count 1 size 56 timeout 1
Show output
PING 10.215.168.1 (10.215.168.1) 56(84) bytes of data.
64 bytes from 10.215.168.1: icmp_seq=1 ttl=64 time=0.530 ms

--- 10.215.168.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.530/0.530/0.530/0.000 ms

Step 3: Set the following configuration in DUT1 :

set interfaces ethernet eth1 802.1x supplicant encrypted-password U2FsdGVkX1+PwW2N7SkKFdV0Y80PtkQZZj1u4hvk/ZA=
set interfaces ethernet eth1 802.1x supplicant username testing
set interfaces ethernet eth1 address 192.168.100.2/24
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 4: Run command interfaces ethernet eth1 802.1x supplicant show status at DUT1 and check if output contains the following tokens:

Authorized
Show output
---------------------------------------------------
        Field                      Value
---------------------------------------------------
EAP State                                   SUCCESS
EAP TLS Cipher          ECDHE-RSA-AES256-GCM-SHA384
EAP TLS Version                             TLSv1.2
PAE State                             AUTHENTICATED
Supplicant Port Status                   Authorized
WPA State                                 COMPLETED

Step 5: Run command interfaces ethernet eth1 802.1x supplicant show stats at DUT1 and check if output matches the following regular expressions:

Port Status\s+Authorized
Show output
-------------------------------
       Field           Value
-------------------------------
EAPoL Frames (Rx)            11
EAPoL Frames (Tx)            11
Invalid Frames (Rx)           0
Logoff Frames (Tx)            0
Port Status          Authorized
Req Frames (Rx)               9
Req ID Frames (Rx)            1
Resp Frames (Tx)             10
Start Frames (Tx)             1

Step 6: Run command interfaces ethernet eth1 802.1x authenticator show stats at DUT0 and check if output matches the following regular expressions:

Authentication Successes\s+1
Show output
---------------------------------
         Field             Value
---------------------------------
Access Challenges               9
Authentication Backend     RADIUS
Authentication Failures         0
Authentication Successes        1
EAPoL frames (Rx)              11
EAPoL frames (Tx)              11
Reauthenticate              FALSE
Reauthenticate Period           0
Session Time                    1
Session User Name         testing

Step 7: Ping IP address 192.168.100.1 from DUT1:

admin@DUT1$ ping 192.168.100.1 count 1 size 56 timeout 1
Show output
PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.
64 bytes from 192.168.100.1: icmp_seq=1 ttl=64 time=0.567 ms

--- 192.168.100.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.567/0.567/0.567/0.000 ms

Note

Send a CoA/Disconnect request from the RADIUS server On Linux, the FreeRADIUS package includes the utility radtest that can be used to send these messages:

Show output
$ cat /osdx-tests/utils/dot1x/auth.req
User-Name = "testing"
$ radclient -s -t 1 -r 1 10.215.168.64:3799 disconnect coa_secret -f /osdx-tests/utils/dot1x/auth.req
Sent Disconnect-Request Id 46 from 0.0.0.0:35517 to 10.215.168.64:3799 length 29
Packet summary:
      Accepted      : 0
      Rejected      : 0
      Lost          : 1
      Passed filter : 0
      Failed filter : 0

Warning

Since CoA/Disconnect was unsuccessful, DUT1 is still able to reach DUT0.

Step 8: Ping IP address 192.168.100.1 from DUT1:

admin@DUT1$ ping 192.168.100.1 count 1 size 56 timeout 1
Show output
PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.
64 bytes from 192.168.100.1: icmp_seq=1 ttl=64 time=5.12 ms

--- 192.168.100.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 5.123/5.123/5.123/0.000 ms

Test CoA Disconnect Wrong Username

Description

In this scenario, DUT2 sends a CoA request to DUT0 using the wrong username. DUT0 rejects the request.

Scenario

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.215.168.64/24
set interfaces ethernet eth1 802.1x authenticator aaa authentication list1
set interfaces ethernet eth1 802.1x authenticator coa client 10.215.168.1
set interfaces ethernet eth1 802.1x authenticator coa encrypted-secret U2FsdGVkX183zQ8oKvvBXoQcCbYc/7++jBjicRZykQA=
set interfaces ethernet eth1 802.1x authenticator reauth-period 0
set interfaces ethernet eth1 address 192.168.100.1/24
set system aaa group radius radgroup1 server serv1
set system aaa list list1 method 1 group radius radgroup1
set system aaa server radius serv1 address 10.215.168.1
set system aaa server radius serv1 encrypted-key U2FsdGVkX1+/HLyM8f2SgaTXTk/X2Qw8S7XdvHTUqEMOZh5y6+anIQ97W2N1jEbf0XaEicF8A7JmpWuCv7/MVQ==
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Ping IP address 10.215.168.1 from DUT0:

admin@DUT0$ ping 10.215.168.1 count 1 size 56 timeout 1
Show output
PING 10.215.168.1 (10.215.168.1) 56(84) bytes of data.
64 bytes from 10.215.168.1: icmp_seq=1 ttl=64 time=0.304 ms

--- 10.215.168.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.304/0.304/0.304/0.000 ms

Step 3: Set the following configuration in DUT1 :

set interfaces ethernet eth1 802.1x supplicant encrypted-password U2FsdGVkX19m8a3OLurHp28Ccj6w6PdaQGO1dJ/G7r0=
set interfaces ethernet eth1 802.1x supplicant username testing
set interfaces ethernet eth1 address 192.168.100.2/24
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 4: Run command interfaces ethernet eth1 802.1x supplicant show status at DUT1 and check if output contains the following tokens:

Authorized
Show output
---------------------------------------------------
        Field                      Value
---------------------------------------------------
EAP State                                   SUCCESS
EAP TLS Cipher          ECDHE-RSA-AES256-GCM-SHA384
EAP TLS Version                             TLSv1.2
PAE State                             AUTHENTICATED
Supplicant Port Status                   Authorized
WPA State                                 COMPLETED

Step 5: Run command interfaces ethernet eth1 802.1x supplicant show stats at DUT1 and check if output matches the following regular expressions:

Port Status\s+Authorized
Show output
-------------------------------
       Field           Value
-------------------------------
EAPoL Frames (Rx)            11
EAPoL Frames (Tx)            11
Invalid Frames (Rx)           0
Logoff Frames (Tx)            0
Port Status          Authorized
Req Frames (Rx)               9
Req ID Frames (Rx)            1
Resp Frames (Tx)             10
Start Frames (Tx)             1

Step 6: Run command interfaces ethernet eth1 802.1x authenticator show stats at DUT0 and check if output matches the following regular expressions:

Authentication Successes\s+1
Show output
---------------------------------
         Field             Value
---------------------------------
Access Challenges               9
Authentication Backend     RADIUS
Authentication Failures         0
Authentication Successes        1
EAPoL frames (Rx)              11
EAPoL frames (Tx)              11
Reauthenticate              FALSE
Reauthenticate Period           0
Session Time                    0
Session User Name         testing

Step 7: Ping IP address 192.168.100.1 from DUT1:

admin@DUT1$ ping 192.168.100.1 count 1 size 56 timeout 1
Show output
PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.
64 bytes from 192.168.100.1: icmp_seq=1 ttl=64 time=0.996 ms

--- 192.168.100.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.996/0.996/0.996/0.000 ms

Note

Send a CoA/Disconnect request from the RADIUS server On Linux, the FreeRADIUS package includes the utility radtest that can be used to send these messages:

Show output
$ cat /osdx-tests/utils/dot1x/wrong_auth.req
User-Name = "wrong"
$ radclient -s -t 1 -r 1 10.215.168.64:3799 disconnect coa_secret -f /osdx-tests/utils/dot1x/wrong_auth.req
Sent Disconnect-Request Id 68 from 0.0.0.0:43759 to 10.215.168.64:3799 length 27
Received Disconnect-NAK Id 68 from 10.215.168.64:3799 to 10.215.168.1:43759 length 50
Packet summary:
      Accepted      : 0
      Rejected      : 1
      Lost          : 0
      Passed filter : 0
      Failed filter : 1

Warning

Since CoA/Disconnect was unsuccessful, DUT1 is still able to reach DUT0.

Step 8: Ping IP address 192.168.100.1 from DUT1:

admin@DUT1$ ping 192.168.100.1 count 1 size 56 timeout 1
Show output
PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.
64 bytes from 192.168.100.1: icmp_seq=1 ttl=64 time=0.305 ms

--- 192.168.100.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.305/0.305/0.305/0.000 ms

Test CoA Disconnect Wrong Secret

Description

In this scenario, DUT2 uses a wrong secret to send a CoA request to DUT0. The request is, therefore, rejected.

Scenario

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.215.168.64/24
set interfaces ethernet eth1 802.1x authenticator aaa authentication list1
set interfaces ethernet eth1 802.1x authenticator coa client 10.215.168.1
set interfaces ethernet eth1 802.1x authenticator coa encrypted-secret U2FsdGVkX1/jYKwHNy6UwgTkk2+E2iWUd1E892fU8sE=
set interfaces ethernet eth1 802.1x authenticator reauth-period 0
set interfaces ethernet eth1 address 192.168.100.1/24
set system aaa group radius radgroup1 server serv1
set system aaa list list1 method 1 group radius radgroup1
set system aaa server radius serv1 address 10.215.168.1
set system aaa server radius serv1 encrypted-key U2FsdGVkX19CXzfnCaLtPDzelJ90R15TqCNogZ7FMVt8OvRHTVsK1V4R32c4mQTvq/OOHpM2H3YU3Ay+bZqpFQ==
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Ping IP address 10.215.168.1 from DUT0:

admin@DUT0$ ping 10.215.168.1 count 1 size 56 timeout 1
Show output
PING 10.215.168.1 (10.215.168.1) 56(84) bytes of data.
64 bytes from 10.215.168.1: icmp_seq=1 ttl=64 time=0.363 ms

--- 10.215.168.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.363/0.363/0.363/0.000 ms

Step 3: Set the following configuration in DUT1 :

set interfaces ethernet eth1 802.1x supplicant encrypted-password U2FsdGVkX18LD7DuUQ5ve6Zq40X0XwFit6SAomlcmlQ=
set interfaces ethernet eth1 802.1x supplicant username testing
set interfaces ethernet eth1 address 192.168.100.2/24
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 4: Run command interfaces ethernet eth1 802.1x supplicant show status at DUT1 and check if output contains the following tokens:

Authorized
Show output
---------------------------------------------------
        Field                      Value
---------------------------------------------------
EAP State                                   SUCCESS
EAP TLS Cipher          ECDHE-RSA-AES256-GCM-SHA384
EAP TLS Version                             TLSv1.2
PAE State                             AUTHENTICATED
Supplicant Port Status                   Authorized
WPA State                                 COMPLETED

Step 5: Run command interfaces ethernet eth1 802.1x supplicant show stats at DUT1 and check if output matches the following regular expressions:

Port Status\s+Authorized
Show output
-------------------------------
       Field           Value
-------------------------------
EAPoL Frames (Rx)            11
EAPoL Frames (Tx)            11
Invalid Frames (Rx)           0
Logoff Frames (Tx)            0
Port Status          Authorized
Req Frames (Rx)               9
Req ID Frames (Rx)            1
Resp Frames (Tx)             10
Start Frames (Tx)             1

Step 6: Run command interfaces ethernet eth1 802.1x authenticator show stats at DUT0 and check if output matches the following regular expressions:

Authentication Successes\s+1
Show output
---------------------------------
         Field             Value
---------------------------------
Access Challenges               9
Authentication Backend     RADIUS
Authentication Failures         0
Authentication Successes        1
EAPoL frames (Rx)              11
EAPoL frames (Tx)              11
Reauthenticate              FALSE
Reauthenticate Period           0
Session Time                    1
Session User Name         testing

Step 7: Ping IP address 192.168.100.1 from DUT1:

admin@DUT1$ ping 192.168.100.1 count 1 size 56 timeout 1
Show output
PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.
64 bytes from 192.168.100.1: icmp_seq=1 ttl=64 time=0.755 ms

--- 192.168.100.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.755/0.755/0.755/0.000 ms

Note

Send a CoA/Disconnect request from the RADIUS server On Linux, the FreeRADIUS package includes the utility radtest that can be used to send these messages:

Show output
$ cat /osdx-tests/utils/dot1x/auth.req
User-Name = "testing"
$ radclient -s -t 1 -r 1 10.215.168.64:3799 disconnect 123456 -f /osdx-tests/utils/dot1x/auth.req
Sent Disconnect-Request Id 220 from 0.0.0.0:60572 to 10.215.168.64:3799 length 29
Packet summary:
      Accepted      : 0
      Rejected      : 0
      Lost          : 1
      Passed filter : 0
      Failed filter : 0

Warning

Since CoA/Disconnect was unsuccessful, DUT1 is still able to reach DUT0.

Step 8: Ping IP address 192.168.100.1 from DUT1:

admin@DUT1$ ping 192.168.100.1 count 1 size 56 timeout 1
Show output
PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.
64 bytes from 192.168.100.1: icmp_seq=1 ttl=64 time=7.83 ms

--- 192.168.100.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 7.832/7.832/7.832/0.000 ms