Wednesday, February 6, 2019

[Troubleshooting] Site-to-Site VPN between EdgeRouter X and SonicWall

So I've been pulling my hair out since early this morning trying to figure out why this S2S VPN won't connect. Every document I've found online tells me what I should do but it's still not connecting.

This is with an EdgeRouter X running 1.10 and a SonicWall TZ400 running 6.5.

https://imgur.com/a/k1mlya9

The first image is the settings for the EdgeRouter and the results of a "show vpn log" command. The next images are the settings for the SonicWall.

As far as I can tell, every setting is right but they still won't hook up. The EdgeRouter is connected to a Comcast Gateway that is in Passthrough mode, so there shouldn't be anything stopping it at the NAT, DMZ or Firewall level. The SonicWall already has 3 active S2S VPNs through a Verizon FIOS connection so that should be fine.

Can anyone tell me what I'm missing that isn't allowing this to connect?



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