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.