VPN Established betweeen two Linksys BEFSX41 routers, but cannot connect to remote network.

Posted on 2004-08-18
Last Modified: 2010-04-12
I have two broadband networks; one is cable modem connected (call it net1), the other is DSL (net2).  Both broadband connections are DHCP assigned, however the net2 is assigned a private non-routable IP (ISP uses 172.x.x.x addressing).  Net1 utilizes to resolve to the current IP.  At each network a Linksys BEFSX41 sits behind the modem.  The local and remote secure nets on the VPN setups on both ends are configured for each other's full subnet.  Behind net1's router is a network, and behind net2's router is a network.  I can establish the VPN by letting net2's router initiate the connection to the FQDN.  Once connected however, I cannot ping from a 10.0.1.x address, and vice versa.  Also tried http connections with no luck.

In the past, we used PPTP tunnels through the routers to create a server to server tunnel with no problem, but this needs to be hardware based now with no software based connections.

Any clues?
Question by:CoreyClamp
1 Comment
LVL 36

Accepted Solution

grblades earned 400 total points
ID: 11839045
Being able to authenticate and establish the VPN but not being able to transfer data is a normal sympton of ip protocol number 50 (esp) being blocked. Contact your net2 ISP to ensure that esp is permitted.

Featured Post

Free Tool: Postgres Monitoring System

A PHP and Perl based system to collect and display usage statistics from PostgreSQL databases.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Cisco ASA 5506W VPN Clients not seeing local network 12 40
SSL RA VPN 7 113
Domain and Split DNS Names for Cisco VPN Client 5.0.07 1 39
ASA AnyConnect tunneling 3 42
OpenVPN is a great open source VPN server that is capable of providing quick and easy VPN access to your network on the cheap.  By default the software is configured to allow open access to your network.  But what if you want to restrict users to on…
This is an article about my experiences with remote access to my clients (so that I may serve them) and eventually to my home office system via Radmin Remote Control. I have been using remote access for over 10 years and have been improving my metho…
After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Windows 10 is mostly good. However the one thing that annoys me is how many clicks you have to do to dial a VPN connection. You have to go to settings from the start menu, (2 clicks), Network and Internet (1 click), Click VPN (another click) then fi…

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question