GRE tunnel working only in one direction
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Hello,
I've created GRE tunnel between two local subnets connected to two local pfSense machines, although I am able to ping only in one direction.
Rules are set identically on both pfSense machines.
Client computers from which I try to ping are running Windows, but Windows firewall is disabled in both cases.
Could you please help me ?I can ping the 2nd subnet from the devices conneted to the 1st site LAN.
First pfSense
WAN
192.168.3.104
LAN
192.168.20.1
I cannot ping the 1st subnet from the devices conneted to the 2nd site LAN.
Second pfSense
WAN
192.168.3.98
LAN
192.168.40.1
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Are you really using 1.2.3.4/5 as the tunnel subnet? Is that conflicting with something in the routing table?
Host unreachable though looks like just a missing route in the second pfSense. With the interfaces assigned the reply-to state may allow replies to work the other way even without a route.
Steve
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Thank you for response Steve.
The rules are set exactly the same on both pfSense machines.
It must be some other problem.UPDATE:
I finally got this problem solved.
I've reset whole configuration of the 2nd pfSense machine to the factory settings.
I've configured all the interfaces & rules again and GRE tunnel is working in both directions now.
I don't know what was the casue, but there must have been some mess in pfSense configuration files.
I assume that the issue was interface related.I found a guy who had similar issue and he also fixed it this way.
Regards
Rodak
