How do I test port 49 (TACACS) availability from the Cisco Router

[Mohd Afadzal Mohamadin]

Hello Guys,

Good day to all and hope you doing fine.

I'm configuring TACACS to my router. However, between router and tacacs server there is a firewall in the middle who was manage the port and ip restriction management.

Router <====> Firewall <====> TACACS Server.

My question, how can i test the port availability of TACACS server (TCP 49) is already open by the firewall before i make configuration ?Where i can confirm the port 49 on the TACACS server IP was succesfully open. Therefore i can start configure the TACACS configuration inside the router.

Many Thanks

[mhnedirli · Accepted solution]

Hello, 

Try to telnet the server with specified port

telnet x.x.x.x 49

it will respond if it is open, else it will refuse or gives connection error.