Came across an issue on FortiOS 5.4 where a connection to remote peer via an IPSEC Tunnel suddenly stopped working. (My user told me it was working in the past atleast) Setup is the internal IP needs to be NAT'd to an IP that is known to the VPN peer. So for example, 10.5.0.5 (internal) … Continue reading Fortigate: How to Source NAT traffic into a VPN Tunnel
Let’s say you’ve got a router with well over 100 IPSec VPN peers, and you’ve got this one tunnel that just won’t form correctly. Your not sure why and want nothing more than to debug the IPSec process for this one peer but you know if you debug the isakmp or ipsec process your going … Continue reading Tricks: How to debug a specific IPSec VPN Tunnel on Cisco.