topic Edegrouter VPN server behind Hub Two router in Tech Help - Software/Hardware etc

Edegrouter VPN server behind Hub Two router

Tori — Sat, 04 Feb 2023 11:39:02 GMT

Is it possible to connect from the WAN to my Edgerouter VPN server (L2TP) through the Hub Two router (using port forwarding, not bridge mode)? I've forwarded UDP ports 500,1701, and 4500 but can't connect. There is no option to allow ESP protocol, which I assume is the problem. Any suggestions?

Re: Edegrouter VPN server behind Hub Two router

MisterW — Sat, 04 Feb 2023 11:54:33 GMT

@Tori have you got nat-traversal enabled on the Edgerouter ?

I'm no expert but I believe that should enable NAT-T and therefore you should only need to forward UDP ports 500 & 4500

https://helpdesk.emscom.co.uk/helpdesk/knowledgebase.php?article=166

Re: Edegrouter VPN server behind Hub Two router

Tori — Sat, 04 Feb 2023 16:07:07 GMT

Having read about NAT traversal it seems that ESP is encapsulated inside the UDP packets, so only need ports 500 and 4500 forwarding as you said, so the issue lies with my Edgerouter config.

Thanks for pointing me in the right direction.