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Handshake for peer did not complete: What is blocking my Wireguard connection to Surfshark? (lemmy.world)

submitted 2 years ago by [email protected] to c/[email protected]

4 comments fedilink hide all child comments

I'm using a Surfshark VPN and want to connect to Surfshark via the Wireguard protocol. I have installed the Wireguard program, downloaded the configuration file from the Surfshark website with the keys generated by Surfshark. However, when i press 'Activate' it keeps initiating a handshake but never completes.

Things i have tried:

Opening ports on windows firewall
Googling
Forwarding ports on router
Changing settings in the config file

What am i missing?

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[–] [email protected] 2 points 3 weeks ago (1 children)

Did you manage to do it? If so, sharing the solution would be nice

[–] [email protected] 1 points 3 weeks ago

Nope, switched to a different vpn provider

[–] [email protected] 1 points 2 years ago (1 children)

Just speculating. Can't test it out for you because I no longer use Surfshark.

Surfshark insists on using MSS Clamping. In your config file, try adding the following line:

PostUp = iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS ---clamp-mss-to-pmtu

I know for a fact that this works for Wireguard running on Linux. But for Windows, I have no clue if the command is the same. If not, try searching for adding MSS Clamping to your Wireguard connection profile.

[–] [email protected] 1 points 2 years ago

Thanks for the reply!

I tried your suggestion, but it didn't work. Last week I've set up a Linux server that uses a VPN via wireguard and that works fine.