u/thenetwork_security

Hello, as SSL-VPN is removed from 7.6.3 and above and currently we still on 7.4.11 im working on getting the IPSEC VPN Client connection set up before migrating to 7.6.x.
We have lot of site-site IPSEC tunnels setup, and I need to keep these running with out any changes.
Also I need to switch the IPsec port from UDP 500/4500 to TCP (9443 for example) as we have some remote users which their ISP block IPsec ports.

Does changing the IPsec port now will break all the current running IPsec ? Or I can change only the port for this specific remote dial up VPN

Appreciate your help on best option for this migration