IT Employment

General discussion


Cisco VPN problems

By nathaniel-draper ·
I am having a problem with the cisco vpn software.

We have a remote location that has about 7 people behind a linksys cable/dsl router. One person can connect fine with the vpn client, but the second someone else trys to connect it boots the first person off. We cannot maintain multiple vpn connections. Is anyone familiar with this that could help me out?

This conversation is currently closed to new comments.

Thread display: Collapse - | Expand +

All Comments

Collapse -

Check IP address pool

by billbohlen@hallmarkchannl In reply to Cisco VPN problems

Make sure that your IP address pool is set up correctly. Is your router assigning IP addresses to internal hosts with DHCP? Is your VPN Concentrator also assigning internal network addresses with DHCP? If so, there could be an address conflict which could cause hosts to get booted out.
What you might do is set up a reservation scope on the router, and use that range on your concentrator.

Collapse -

Cisco VPN problems

by sdhall725 In reply to Cisco VPN problems

IF the users behind the router are being NAT'ed to the same IP address then only 1 user will be able to connect to the VPN headend device. The way around it is to have each user connect to the VPN device on a different port the Cisco client supports using different ports for connectivity to a headend device.

Collapse -

Home Class Routers

by CCrabtree In reply to Cisco VPN problems

Usually, home class routers allow one VPN Connection, or at most two... you'd have to check.

Collapse -

VPN issue

by mpasaa In reply to Cisco VPN problems

We had a similar issue of some contractors working from a home office and both could NOT connect to our VPN at this govt office at the same time.

We found that you either needed to enable NAT-Traversal on the PIX side OR the home users needed to use a broadband device that supports multiple PPTP connections.

The problem, at least what we found, was that the connections need a way to be differentiated and that is where PAT comes in. Each connection comes from the same address but has a different socket (port) and as long as your PIX "see" these different connections the VPN works fine.

As for staff getting booted off, have you tried updating the PIX to make sure you aren't running into some known issue? Just a thought.

Hope this info helps..good luck

Collapse -

Yes this is a normal issue in routers

by IT cowgirl In reply to Cisco VPN problems

Best solution is to create a VPN tunnel for users at the remote office and use a Cisco 3000 concentrate in the main office for the vpn tunnel to connect. Then the users can connect normally without each using VPN.

Collapse -

Agree - LAN-to-LAN Tunnel = SOLUTION

by mbenitez In reply to Yes this is a normal issu ...

What you need here is a LAN-to-LAN tunnel and not individual VPN client sessions. It's simple, and secure.

Related Discussions

Related Forums