We help IT Professionals succeed at work.

Multiple connections through VPN?  Error 721

Medium Priority
289 Views
Last Modified: 2012-05-06
Hi there.  I'm having trouble with getting multiple users to connect to a remote server via VPN at the same time.

I have a remote Windows Server 2003 SBS system with a PPTP VPN setup.  I have 4 users in the an office behind the same router that need to access the server.

What's happening is that I can get one machine to connect with no problems at all.  Anyone else is getting "Error 721 - Remote computer is not responding."  If I disconnect the first computer, I still can't login with any of the others, but I can relogin with the first with no trouble.

If I reset the router on our side, which is an Actiontec GT701-WG, I can then login using one of the other machines, but again, I can't login with any of the remaining three.  Even the one that was working last time.

What's odd is that when I set this up two days ago, I'm sure I had at least 2 or 3 of the machines running at the same time.  I certainly wasn't rebooting the router between machines.

In digging around and on this site, I saw some indication that you can't create multiple PPTP connections if you have only one public IP on each side.  Is this so?  Is that my problem?  If it is, how come it was working two days ago?  How can I resolve this?

I'll be keeping a close eye on this topic tonight so hopefully some people smarter than I am are up late and bored.

Thanks for your help.

Ramon
Comment
Watch Question

Commented:
Have you checked your firewall rules? Make sure that your firewall allows connections on TCP port 1723 and IP Protocol 47 (GRE). Make sure that those ports are properly forwarded to you VPN Server.

Are you users domain members? Do they use ther domain accounts to login? Check their account properties... Are they allowed to connect remotely?
Commented:
KOTiS, thanks for your thoughts.  The firewall rules are fine and the users all have the appropriate permissions.  Any one of them can login to the VPN, just one at a time.

We've decided on a completely different approach.  We're going to try LogMeIn's Hamachi.  This office is closing down in a few months anyway and most of the staff will be working out of their homes.  Hamachi should make it easy to keep them all connected without the need to configure any more routers or firewalls.

I'd still love to hear ideas and fixes from anyone willing to share.

Thank you.

Ramon

Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.