IPsec traffic dissapearing?!

[lagus]

I have built and set up a site-to-site routed IPsec between an Edgerouter X (Left) and an OPNsense (Right) (19.7.2).

Traffic from the Left to Right works as well as Left-side LAN to Right-side Lan works.
Right side to Left side also works if I ping from the IPsec interface or "default" however pinging from the LAN interface on the right side to the IPsec endpoint on the left I get:

Code: [Select]

# /sbin/ping -S '192.168.11.1' -c '3' '192.168.10.19'
PING 192.168.10.19 (192.168.10.19) from 192.168.11.1: 56 data bytes

--- 192.168.10.19 ping statistics ---
3 packets transmitted, 0 packets received, 100.0% packet loss
ping: sendto: Permission denied
ping: sendto: Permission denied
ping: sendto: Permission denied
I'm at loss and don't know how to continue.
I have had very similar problems in the past and re-installed, it did not resolve my problem.

Where should I start troubleshooting?
Please help and or let me know the information you need in order to understand the issue better.

Many thanks,
Regards,
//Robert

[lagus]

Nothing?

[Quetschwalze]

If it's a route-based IPsec you might want to check your routes and your Firewall ruleset.
If it's policy-based check if your Security Associations are correct.

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