Acl Ip
This scenario shows how to install custom ACLs from received RADIUS messages (using NAS-Filter-Rule attributes and according to RFC3588).
Test 802.1x NAS-Filter-Rule ACLs
Description
DUT0 is configured with an 802.1x authenticated interface and DUT1 is configured as a supplicant. Some ACLs are configured in the authentication server to filter incoming/outgoing traffic.
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 reauth-period 0 set interfaces ethernet eth1 address 192.168.100.1/24 set service ssh 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 U2FsdGVkX191tmP0OX/8FystrhORWtBGRTJ0vbuUDvnr5QzLL13W8uH5GspNlxKXd76I1X8o8Vg2LtpqObXqbA== 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 1Show 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=0.190 ms --- 10.215.168.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.190/0.190/0.190/0.000 ms
Step 3: Set the following configuration in DUT1:
set interfaces ethernet eth1 802.1x supplicant encrypted-password U2FsdGVkX18wOcnHmHsAIk1Z7Mx2ZZRNX4Q15FVnTMo= set interfaces ethernet eth1 802.1x supplicant username user_acl_ip set interfaces ethernet eth1 address 192.168.100.2/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 4: Run command interfaces ethernet eth1 802.1x supplicant show status at DUT1 and check if output contains the following tokens:
AuthorizedShow output
--------------------------------------------------- Field Value --------------------------------------------------- EAP State SUCCESS EAP TLS Cipher ECDHE-RSA-AES256-GCM-SHA384 EAP TLS Version TLSv1.2 PAE State AUTHENTICATED Supplicant Port Status Authorized WPA State COMPLETED
Step 5: Run command interfaces ethernet eth1 802.1x supplicant show stats at DUT1 and check if output matches the following regular expressions:
Port Status\s+AuthorizedShow output
------------------------------- Field Value ------------------------------- EAPoL Frames (Rx) 11 EAPoL Frames (Tx) 11 Invalid Frames (Rx) 0 Logoff Frames (Tx) 0 Port Status Authorized Req Frames (Rx) 9 Req ID Frames (Rx) 1 Resp Frames (Tx) 10 Start Frames (Tx) 1
Step 6: Run command interfaces ethernet eth1 802.1x authenticator show stats at DUT0 and check if output matches the following regular expressions:
Authentication Successes\s+1Show output
------------------------------------- Field Value ------------------------------------- Access Challenges 9 Authentication Backend RADIUS Authentication Failures 0 Authentication Successes 1 EAPoL frames (Rx) 11 EAPoL frames (Tx) 11 Reauthenticate FALSE Reauthenticate Period 0 Session Time 0 Session User Name user_acl_ip
Step 7: Ping IP address 192.168.100.1 from DUT1:
admin@DUT1$ ping 192.168.100.1 count 1 size 56 timeout 1Show 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=0.314 ms --- 192.168.100.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.314/0.314/0.314/0.000 ms
Note
IP Filter Rule ACLs:
Allow incoming/outgoing ICMP traffic to/from 192.168.100.0/24.
Allow management SSH traffic (tcp 22).
Allow incoming UDP flows from 192.168.100.2:1234 towards 192.168.100.1:1234.
Drop remaining traffic.
Step 8: Run command interfaces ethernet eth1 802.1x authenticator show acl rules at DUT0 and expect this output:
Show output
Received ACL type: Filter-Rule. Rules for incoming traffic: 1: permit in 1 from any to 192.168.100.0/24 2: permit in 6 from any to 192.168.100.1 22 3: permit in 17 from 192.168.100.2 1234 to 192.168.100.1 1234 4: deny in ip from any to any Rules for outgoing traffic: 1: permit out 1 from 192.168.100.1 to any 2: permit out 6 from 192.168.100.1 22 to any 3: permit out 17 from 192.168.100.1 1234 to 192.168.100.2 1234 4: deny out ip from any to any
Step 9: Ping IP address 192.168.100.1 from DUT1:
admin@DUT1$ ping 192.168.100.1 count 1 size 56 timeout 1Show 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=0.228 ms --- 192.168.100.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.228/0.228/0.228/0.000 ms
Step 10: Init an SSH connection from DUT1 to IP address 192.168.100.1 with the user admin:
admin@DUT1$ ssh admin@192.168.100.1 option StrictHostKeyChecking=no option UserKnownHostsFile=/dev/nullShow output
Warning: Permanently added '192.168.100.1' (ECDSA) to the list of known hosts. admin@192.168.100.1's password: Welcome to Teldat OSDx v4.2.1.0 This system includes free software. Contact Teldat for licenses information and source code. Last login: Mon Oct 7 09:45:02 2024 admin@osdx$
Step 11: Initiate a udp connection from DUT1 to DUT0 and try to send some messages between both endpoints
admin@DUT0$ monitor test connection server 1234 udp admin@DUT1$ monitor test connection client 192.168.100.1 1234 udp source-port 1234
Step 12: Expect a failure in the following command:
Initiate a udp connection from DUT0 to DUT1 and try to send some messages between both endpoints
admin@DUT1$ monitor test connection server 4321 udp admin@DUT0$ monitor test connection client 192.168.100.2 4321 udp
Step 13: Run command interfaces ethernet eth1 802.1x authenticator show acl stats at DUT0 and expect this output:
Show output
ACL for ifc eth1 -- hook in ----------------------------------------------------- rule pkts match pkts eval bytes match bytes eval ----------------------------------------------------- 1 2 34 168 5572 2 27 32 5164 5404 3 5 5 240 240 4 0 0 0 0 ----------------------------------------------------- Total 34 34 5572 5572 ACL for ifc eth1 -- hook out ----------------------------------------------------- rule pkts match pkts eval bytes match bytes eval ----------------------------------------------------- 1 2 31 168 5476 2 23 29 5020 5308 3 5 6 240 288 4 1 1 48 48 ----------------------------------------------------- Total 31 31 5476 5476
Test 802.1x NAS-Filter-Rule ACLs And CoA
Description
In this scenario, DUT1 is authenticated successfully and some ACLs are configured. A CoA message is later received from the authentication server that changes the configured ACLs to drop non-ICMP traffic.
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+Vbgh9hD4yLSswzRnlVKJ5x1SNCdayyi0= set interfaces ethernet eth1 802.1x authenticator reauth-period 0 set interfaces ethernet eth1 address 192.168.100.1/24 set service ssh 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+bP+sUkyMNn3KLAkbILSPpBQn78xgH43nim9yTY7uuRQGaHe83yW8m2v8Gfkzs2auFMvD9D/H98w== 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 1Show 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=0.217 ms --- 10.215.168.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.217/0.217/0.217/0.000 ms
Step 3: Set the following configuration in DUT1:
set interfaces ethernet eth1 802.1x supplicant encrypted-password U2FsdGVkX1/VJ3UsU/0DGnnyldPONyz09Fn8aKrbqQM= set interfaces ethernet eth1 802.1x supplicant username user_acl_ip set interfaces ethernet eth1 address 192.168.100.2/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 4: Run command interfaces ethernet eth1 802.1x supplicant show status at DUT1 and check if output contains the following tokens:
AuthorizedShow output
--------------------------------------------------- Field Value --------------------------------------------------- EAP State SUCCESS EAP TLS Cipher ECDHE-RSA-AES256-GCM-SHA384 EAP TLS Version TLSv1.2 PAE State AUTHENTICATED Supplicant Port Status Authorized WPA State COMPLETED
Step 5: Run command interfaces ethernet eth1 802.1x supplicant show stats at DUT1 and check if output matches the following regular expressions:
Port Status\s+AuthorizedShow output
------------------------------- Field Value ------------------------------- EAPoL Frames (Rx) 11 EAPoL Frames (Tx) 11 Invalid Frames (Rx) 0 Logoff Frames (Tx) 0 Port Status Authorized Req Frames (Rx) 9 Req ID Frames (Rx) 1 Resp Frames (Tx) 10 Start Frames (Tx) 1
Step 6: Run command interfaces ethernet eth1 802.1x authenticator show stats at DUT0 and check if output matches the following regular expressions:
Authentication Successes\s+1Show output
------------------------------------- Field Value ------------------------------------- Access Challenges 9 Authentication Backend RADIUS Authentication Failures 0 Authentication Successes 1 EAPoL frames (Rx) 11 EAPoL frames (Tx) 11 Reauthenticate FALSE Reauthenticate Period 0 Session Time 0 Session User Name user_acl_ip
Step 7: Ping IP address 192.168.100.1 from DUT1:
admin@DUT1$ ping 192.168.100.1 count 1 size 56 timeout 1Show 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=0.367 ms --- 192.168.100.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.367/0.367/0.367/0.000 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/acl_ip.req User-Name = "user_acl_ip" NAS-Filter-Rule = "permit in 1 from any to any" NAS-Filter-Rule += "deny in ip from any to any" $ radclient -s -t 1 -r 1 10.215.168.64:3799 coa coa_secret -f /osdx-tests/utils/dot1x/acl_ip.req Sent CoA-Request Id 201 from 0.0.0.0:49787 to 10.215.168.64:3799 length 89 Received CoA-ACK Id 201 from 10.215.168.64:3799 to 10.215.168.1:49787 length 44 Packet summary: Accepted : 1 Rejected : 0 Lost : 0 Passed filter : 1 Failed filter : 0
Note
IP Filter Rule ACLs:
Allow incoming ICMP traffic.
Drop remaining incoming traffic.
NOTE: outgoing traffic is allowed.
Step 8: Run command interfaces ethernet eth1 802.1x authenticator show acl rules at DUT0 and expect this output:
Show output
Received ACL type: Filter-Rule. Rules for incoming traffic: 1: permit in 1 from any to any 2: deny in ip from any to any
Step 9: Ping IP address 192.168.100.1 from DUT1:
admin@DUT1$ ping 192.168.100.1 count 1 size 56 timeout 1Show 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=0.221 ms --- 192.168.100.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.221/0.221/0.221/0.000 ms
Step 10: Init an SSH connection from DUT1 to IP address 192.168.100.1 with the user admin:
admin@DUT1$ ssh admin@192.168.100.1 option StrictHostKeyChecking=no option UserKnownHostsFile=/dev/null
Step 11: Expect a failure in the following command:
Initiate a udp connection from DUT1 to DUT0 and try to send some messages between both endpoints
admin@DUT0$ monitor test connection server 1234 udp admin@DUT1$ monitor test connection client 192.168.100.1 1234 udp source-port 1234
Step 12: Expect a failure in the following command:
Initiate a udp connection from DUT0 to DUT1 and try to send some messages between both endpoints
admin@DUT1$ monitor test connection server 4321 udp admin@DUT0$ monitor test connection client 192.168.100.2 4321 udp
Step 13: Run command interfaces ethernet eth1 802.1x authenticator show acl stats at DUT0 and expect this output:
Show output
ACL for ifc eth1 -- hook in ----------------------------------------------------- rule pkts match pkts eval bytes match bytes eval ----------------------------------------------------- 1 1 8 84 480 2 7 7 396 396 ----------------------------------------------------- Total 8 8 480 480