Authorization
This scenario shows how to set up per-command authorization.
Tacacs Method Privileged User
Description
A TACACS+ server configured to deny the show date
command and allow everything else is added to a TACACS+ group, which
is added to an AAA list. This list is assigned to CLI’s command
authorization. Whenever a user attempts to run a command, this is sent
to the server and is only executed when authorized to do so.
Scenario
Step 1: Set the following configuration in DUT0 :
set interfaces ethernet eth0 address 10.215.168.64/24 set system aaa group tacacs tacgroup1 server serv1 set system aaa list list1 method 1 group tacacs tacgroup1 set system aaa server tacacs serv1 address 10.215.168.1 set system aaa server tacacs serv1 encrypted-key U2FsdGVkX1/wHG1UFw8sv/4fMNI83POtEzWemtWS0LI= set system cli aaa authorization list1 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0' set system login user testadmin authentication encrypted-password '$6$s78pVL7QgTD4E0M3$48N69M/7hQEBTsLqsiKvMyBTQDJZO6zCFdcHEkeJeJUYNEvLW.pWORb9nMMltoP7j.UHh30R5eny8BoL0Cfvr1' set system login user testadmin role admin
Step 2: Ping IP address 10.215.168.1 from DUT0:
admin@DUT0$ 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=0.218 ms --- 10.215.168.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.218/0.218/0.218/0.000 ms
Step 3: Run command show version at DUT0 and expect this output:
Show output
OS vendor: Teldat OS name: OSDx OS version: v4.2.9.0 OS Linux kernel: 6.12.73 OS built by: jenkins@diana OS build date: Mon Mar 2 07:38:32 UTC 2026 OS installation: physical OS boot mode: user License: VM_BASE Firewall eth-Rate-Permit-Full Hardware vendor: QEMU Hardware model: VM Hardware OEM model: Standard PC (i440FX + PIIX, 1996) Hardware version: pc-i440fx-7.2 Hardware UUID: 4a55925e-1900-562d-80f6-232a38be0f01 Hardware architecture: amd64 Hardware fwid: iso Hardware base MAC: de:ad:be:ef:6c:00 Hardware cpu: 1 x QEMU Virtual CPU version 2.5+ (4 cores) Last reboot reason: Panic Date: Thu 05 Mar 2026 17:11:12 +00:00 Uptime: 3:20:59 CPU load (1m, 5m, 15m): 0.33 0.16 0.13 CPU usage % (1m): 1.91 Storage usage (kB): 419424/8144384 Memory usage (kB): 427428/1572708 Users logged in: 1 Mode (current/next boot): user/user Hostname: osdx
Step 4: Run command show date at DUT0 and expect this output:
Show output
CLI Error: Unauthorized
Note
Commands are expanded before being sent to the authorization server
Step 5: Run command sh da at DUT0 and expect this output:
Show output
CLI Error: Unauthorized
Step 6: Run command show running at DUT0 and expect this output:
Show output
# Teldat OSDx VM version v4.2.9.0 # Thu 05 Mar 2026 17:11:12 +00:00 # Warning: Configuration has not been saved set interfaces ethernet eth0 address 10.215.168.64/24 set system aaa group tacacs tacgroup1 server serv1 set system aaa list list1 method 1 group tacacs tacgroup1 set system aaa server tacacs serv1 address 10.215.168.1 set system aaa server tacacs serv1 encrypted-key U2FsdGVkX1/wHG1UFw8sv/4fMNI83POtEzWemtWS0LI= set system cli aaa authorization list1 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0' set system login user testadmin authentication encrypted-password '$6$s78pVL7QgTD4E0M3$48N69M/7hQEBTsLqsiKvMyBTQDJZO6zCFdcHEkeJeJUYNEvLW.pWORb9nMMltoP7j.UHh30R5eny8BoL0Cfvr1' set system login user testadmin role admin
Tacacs Method Non-Privileged User
Description
In this case, the same scenario is tested but with a non-privileged user called testmonitor.
Scenario
Step 1: Set the following configuration in DUT0 :
set interfaces ethernet eth0 address 10.215.168.64/24 set system aaa group tacacs tacgroup1 server serv1 set system aaa list list1 method 1 group tacacs tacgroup1 set system aaa server tacacs serv1 address 10.215.168.1 set system aaa server tacacs serv1 encrypted-key U2FsdGVkX19arDuZfRoJ+rJbwh7D68kUKZWR5J+zElo= set system cli aaa authorization list1 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0' set system login user testmonitor authentication encrypted-password '$6$oJVUbwYDQRlfadyU$6TCfPKXS8hJob6JIiDiU7MlrmG4ze4i8jvGWIPrG0RZWytENzyqmO7/3MRIQ1UxQNyacz16dpeMK3Xv6ZTHHj1' set system login user testmonitor role monitor
Step 2: Ping IP address 10.215.168.1 from DUT0:
admin@DUT0$ 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=0.175 ms --- 10.215.168.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.175/0.175/0.175/0.000 ms
Step 3: Run command show version at DUT0 and expect this output:
Show output
OS vendor: Teldat OS name: OSDx OS version: v4.2.9.0 OS Linux kernel: 6.12.73 OS built by: jenkins@diana OS build date: Mon Mar 2 07:38:32 UTC 2026 OS installation: physical OS boot mode: user License: VM_BASE Firewall eth-Rate-Permit-Full Hardware vendor: QEMU Hardware model: VM Hardware OEM model: Standard PC (i440FX + PIIX, 1996) Hardware version: pc-i440fx-7.2 Hardware UUID: 4a55925e-1900-562d-80f6-232a38be0f01 Hardware architecture: amd64 Hardware fwid: iso Hardware base MAC: de:ad:be:ef:6c:00 Hardware cpu: 1 x QEMU Virtual CPU version 2.5+ (4 cores) Last reboot reason: Panic Date: Thu 05 Mar 2026 17:11:22 +00:00 Uptime: 3:21:09 CPU load (1m, 5m, 15m): 0.31 0.15 0.13 CPU usage % (1m): 1.91 Storage usage (kB): 419424/8144384 Memory usage (kB): 420004/1572708 Users logged in: 1 Mode (current/next boot): user/user Hostname: osdx
Step 4: Run command show date at DUT0 and expect this output:
Show output
CLI Error: Unauthorized
Step 5: Run command show running at DUT0 and expect this output:
Show output
CLI Error: Insufficient privileges