I am trying to setup a site-to-site VPN between Vyos 1.3.0 and pfSense/OpnSense. The problem is the tunnel comes up but I cannot have traffic from the pfSense/OpnSense site to the Vyos site until I first send a ping from the Vyos site to the pfSense/OpnSense site. Both sites are on public IP addre…

Try: delete firewall name OUTSIDE-LOCAL rule 40 ipsec

Routed IPSec between pfSense/OpnSense problem

Lex April 5, 2022, 11:55am 6

Looks indeed a problem with the firewall rules. After disabling the OUTSIDE-LOCAL rules traffic flows in both directions.

Any sugggestion what rule could cause the issue? I got these rules from the various samples.