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Forum Discussion
omane
Nov 18, 2025Aspirant
RS700 - passing L2TP traffic to internal server
[NOTE: I am preconfiguring an RS700 on my local LAN so I can send it to a remote family member. Hence, the "external" address of the RS700 is a private address (192.168.3.155); the LAN/internal addre...
- Nov 18, 2025
I greatly appreciate the help everyone!
Following StephenB's comment about trying to forward Port 5000 (and 5001 for https administration), I neither worked. Doubtful that it would be a Netgear bug, I went down the path of starting from scratch with the network connectivity. The issue (please don't kill me) is that I had the Synology server connected (via ethernet) to both the 192.168.3.x and 192.168.10.x networks (multiple ethernet ports in the Synology). Once I disconnected the 192.168.3.x ethernet, everything worked as expected.
Thanks for your help! Apologies if this is a rookie mistake...
StephenB
Nov 18, 2025Guru - Experienced User
omane wrote:I have configured Port Forwarding for UDP 500, 1701 & 4500, and designated the internal IP as 192.168.10.5 (Synology server).
When I try to connect to 192.168.3.155 from 192.168.3.151, I receive an "L2TP VPN server did not respond" message.
L2TP NAT traversal requires IPsec NAT-T to be configured on the Synology. I suspect that might not have been set up correctly.
I think OpenVPN would be the best option here. PPTP isn't very secure, and should be avoided.
FWIW, I don't think this is a router issue. If you haven't posted this problem in the Synology forum, then that would be a good next step.