VPN error 721 Help would be appreciated

[Guest]

I have two LANS on remote locations one on a 10.0.0.* ip range and the other
on 192.168.16.* ip range. Each site has a SBS2000 domain controller.
I use Netgear Dg834 ADSL routers on each side for Iternet connectivity. I
opened the VPN port 1723 on the Firewall on the router,.I connect with
Microsoft VPN client using pptp. I make one successful connection from the
one LAN, As soon as I try to connect from another client on the same LAN I
get a 721 error. I have managed to connect from other sites simultaneously
with up to three connections from different locations(LANS).as soon as I try
2 ore more connection from the same LAN i receive a 721 error nad it hangs on
verifying username and password. Please any help would be great. all my PC's
running XP pro sp1,2

 

[Robert L [MS-MVP]]

some routers limit one VPN connection. If this is the case, you may want to setup site to site VPN. this page may help,

Microsoft site to sie vpn
Step-by-Step Guide for Setting Up a PPTP-based Site-to-Site VPN Connection using
2003, Step-by-Step Guide for Setting Up a PPTP-based Site-to-Site VPN ....
www.howtonetworking.com/articles/mssitetositevpn.htm


Bob Lin, MS-MVP, MCSE & CNE
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
This posting is provided "AS IS" with no warranties.
Don't send e-mail or reply to me except you need consulting services. Posting on MS newsgroup will benefit all readers and you may get more help.
I have two LANS on remote locations one on a 10.0.0.* ip range and the other
on 192.168.16.* ip range. Each site has a SBS2000 domain controller.
I use Netgear Dg834 ADSL routers on each side for Iternet connectivity. I
opened the VPN port 1723 on the Firewall on the router,.I connect with
Microsoft VPN client using pptp. I make one successful connection from the
one LAN, As soon as I try to connect from another client on the same LAN I
get a 721 error. I have managed to connect from other sites simultaneously
with up to three connections from different locations(LANS).as soon as I try
2 ore more connection from the same LAN i receive a 721 error nad it hangs on
verifying username and password. Please any help would be great. all my PC's
running XP pro sp1,2