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    Slow ssh between LANs. Not sure what to do.

    Scheduled Pinned Locked Moved WireGuard
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    • D
      duke888
      last edited by

      Hello, all!

      I recently started using pfSense (2.6.0) again and have setup a site-to-site VPN using Wireguard for site A and site B. The two locations are ~10 miles away from each other and both have 400/20mb connections. The tunnel has been reliable, and averaging ~22ms pings from both locations.

      I haven't done much with the connection though since I'm having some network issues between Darwin and Linux hosts between the two locations. When trying to ssh for example, I typically get a time out when going across the tunnel, though sometimes I'll get a login prompt which quickly timesout as well. This only seems to be an issue w/ devices past the firewalls since I'm able to connect to both pfSense boxes from either location without issue.

      One other things I've done was a speed test via SCP from a Windows 10 machine on Site A pulling a 2GB file from Site B which connected instantly and transferred multiple times without issue.

      I've played around w/ changing the Wireguard interfaces MTU and MSS settings (MTU is default and MSS is 1380 currently) after reading various examples of tuning those, but nothing has seemed to work.

      Anyone have any ideas on what I should try, or what I'm probably missing in my config?

      Almost forgot. I used the Wireguard multisite tutorial on the netgate site, and CPU usage has hit a max of 10% during the SCP transfers, but averaged 6%.

      Thank you in advance!

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