Ok I'm a network admin and at work we have a Cisco VPN router. I can and always could connect to my work with Windows 2000 pro the Microsoft VPN client over PPTP. I upgraded to Windows XP Pro and now I can't get in. So I figured the upgrade was not the best way to go so I did a clean in stall but still no VPN. I have looked every where for answers. Tells me the “Host name and / or IP is unreachable”.

Same problem here. http://www.computing.net/networking/wwwboard/forum/4003.html This hellped me out a fair amount but I need to know what port the xp vpn accesses through. I need to use port forewarding to get around my router. thanx

Hi Are you able to connect to the VPN server ? There is a possibility that if you are running a firewall ( other than the XP firewall ) on the client side that it may not be setup to allow traffic on port 1723. Do you have port 1723 open for TCP on both ends? Also make sure that the XP firewall is not enabled for the VPN connection. Good Luck Dale

Ok I still can't make a VPN connection with WIN XP. I can with WIN 95,98,NT and 2k. From within the building or from outside of it at home. The VPN router is working fine. Also the VPN router is outside the firewall so there's no way it could be that. I do not have XP firewall turned on. I can ping the VPN host or IP from home.

OK, I can connect. I think the biggest thing is to upgrade any firmware with the routers. Now, once I connect, I cant browse the network. If I pull out the router on the client side, it works fine. Does anyone have any ideas. Opening ports, names of networks, anything????? BTW, thanx for the port #'s Dale. Why would the client side have to have port 1723 open?? Kinda strange, but ill try it. 2 xp networks 2 Linksys routers 1 Fustrated IT guy Thanx, DJRealmz DJRealmz@hotmail.com

Ok you’re on a network running XP with 2 Linksys routers. Well I have a Linksys BEFSR41 Cable/DSL Router at home with firmware 1.40.2 and can make VPN connection without opening, forwarding or DMZing any of my PC’s out. I can that is but not for Win XP. This is what I would do. I’m on cable at home and I can have as meny MAC address’s provisioned as I wish. But only ONE computer can get out on the Internet at a time like this. So I provision the router and my main PC on the network. This way if I’m having trouble and not shore if it’s the router or something else, I just plug the modem into my main PC to see if it can access the Internet. I tried this with XP to see if I could VPN but still no. I can’t even make a VPN connection running XP within the building now that sad I know there’s some XP firewall setting that I have not found yet.

As far as I can see the only firewalls are when you right click on the connections in my network places, go to properties, and go to advanced. I havent seen any others and I even managed to connect properly with the microsoft fire wall up!