@nicolasfo said in [RESOLVED] IPSec tunnel OK but routers can't ping each others:
You can know everything about everything thanks to Google. But if you don't know what to search, it is useless.
The problem is resolved, by adding a bogus route, by hand.
Here's the explanation :
https://doc.pfsense.org/index.php/Why_can%27t_I_query_SNMP,_use_syslog,_NTP,_or_other_services_initiated_by_the_firewall_itself_over_IPsec_VPN
Thanks for help
Oh my god this worked! Created an account just to say THANK YOU for this. I have a pfSense<->Unifi connected via IPSec. Applying it on the pfSense side makes pfSense->Unifi direct gateway/FW connection possible. Applying it on the Unifi side made my IPSec work perfectly.
Again, thank you!