<![CDATA[Some servers unreachable through VPN]]>I've had an IPSec tunnel running with pfSense 2.0 for almost a year. Recently, we migrated one of our firewalls and updated to 2.1.2.

After the change, I'm experiencing something really weird: some servers are not reachable through the VPN, while others are perfectly reachable.

My subnets are 192.168.0.0/24 on one site and 192.168.10.0/24 on the other. From 192.168.10.184 (a workstation) I can ping 192.168.0.25 without problems, but can't ping 192.168.0.26.

Both .25 and .26 are Linux virtual machines running on the same physical server. Also, from within 192.168.0.26 I can't ping any of the  192.168.10.0 hosts either.

I checked MTU values, and basic stuff like that, and everything appears to be correct (at least it's the same on a working and non-working server). Can anyone give me a hint?

]]>https://forum.netgate.com/topic/68623/some-servers-unreachable-through-vpnRSS for NodeSat, 10 Oct 2026 02:43:59 GMTWed, 30 Apr 2014 18:19:34 GMT60<![CDATA[Reply to Some servers unreachable through VPN on Thu, 15 May 2014 07:59:33 GMT]]>First guess, wrong subnet mask on the affected hosts (/16 instead of /24, so it thinks the remote network is local).

]]>https://forum.netgate.com/post/461873https://forum.netgate.com/post/461873Thu, 15 May 2014 07:59:33 GMT<![CDATA[Reply to Some servers unreachable through VPN on Thu, 08 May 2014 08:01:23 GMT]]>Have you checked that there isn't a local firewall on '.0.26' that you have magically forgotten about. (I don't know how many times that has happened to me).

]]>https://forum.netgate.com/post/460576https://forum.netgate.com/post/460576Thu, 08 May 2014 08:01:23 GMT