I recently build a new pfsense to our brand new office. We have others 2 branchs that we communicate with IPSEC VPN.
Main office - LAN 192.168.0.0
Branch 1 - LAN 192.168.1.0
Branch 2 - LAN 192.168.5.0
The thing is that the communication with the main office > Branch 2 stop working after some time. I can still ping all devices on the branch by LAN IP, but can't acess anything (Windows Servers, the pfsense Firewall using port 80, etc.)
Meanwhile, I can access all the devices of Branch 2 using WAN IP. With this communication I can access the main office LAN from the Branch 2. So I am confused.
Besides that, I can access using IPSEC VPN from Branch 1 > Branch 2 and vice-versa.
Someone can enlight me on why is this happening?
I reconfigured the VPN with different encrypt algorithm and hash and it worked. Topic can be closed.