OpenVPN ClientVPN issues after 2.3 update
I'm experiencing an issue that seems very much like an MTU issue, ever since updating to pfSense 2.3
I have a scenario like in the following image:
Basically there are x2 pfSense. On site 1 there is a PC with a an OpenVPN client connecting to the pfSense on the site 2. Accessing any resources across the VPN, I can ping, even do very small HTTP GET requests, larger traffic doesn't get through (such as a GET request to a page on the same server, but with more content).
It seems like an MTU issue, and looking through the release notes, there seem to be quite a few MTU changes.
Steps tried: I've tried lowering the MTU to 1300 and 1400 on the VPN client, adjusting the MSS/fragmentation as well, but hasn't fixed the issue.
It's worth noting that if I connect the VPN client from anywhere not behind the pfSense at site one, the traffic works without issue.
Any ideas on where to look next?
I don't think topology would have any relation to that, but that's the only change in behavior that I can think of. Did you change your topology back to net30? Edit your OpenVPN server instance, and set the topology drop down to net30.
I just tried changing to net30, but it doesn't seem to have helped.
I also seem to be having the same dpinger messages in my log as this thread: https://forum.pfsense.org/index.php?topic=110751.0
(although my pfsense isn't virtual)