Hi there folks,
Having a pretty weird issue with some IPSec site-to-site VPNs set up on Draytek routers.
I have a home worker that is trying to access servers in two sites. Usually, she'd connect to a site via a Windows PPTP VPN, and from there is able to browse to locations in different sites through the IPSec site-to-site VPNs.
So say you've got Site 1, where Server1 is located, and Site 2 where Server 2 is located. She should be able to connect to Site 1 and still access Server 2, but this isn't happening. Nor vice versa when she connects to Site 2.
The ISP is Virgin Media. We often see issues with VPNs due to the fact they block PPTP, IPSec, Multicast passthrough by default on their routers, but these are enabled. I've also made sure that the ISP DNS 'Helper' service has been opted out of.
I've also tried setting the user up with the...