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VPN Not working on a Linksis Wireless G Router

Posted on 2004-08-19
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Last Modified: 2006-11-17
Dear Experts:  

VPN and Remote Web Access Not Working on a Small Bussiness Server 2003 with 2 Nic Cards.  IP address from DSL is Dynamic.    Local IP is 192.168.16.2 Network Interface IP is 192.168.1.10 with the gateway as 192.168.1.1.  I reconfigure RAS Server but this has caused me not to connect remotley.  I have configured the Firewall and allowed VPN and Remote Web Access on the Internet Conection Wizard.  Under IP Routing I have General, RIP, NAT/Firewall, DHCP Realy Agent.  I am using a Linksis Wireless G Router with Ports 1723, and 43 for VPN and Ports for Remote Web Access forwarded to 192.18.1.10.  and allowed PPTP,IPSEC, passthrough on the router

Questions:  
I get a 721 error when I make a vpn connection both internaly and externaly.
I can not connect to the Remote Web Access after I disabled and enabled the VPN Services.

Please Help Me
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Question by:dgadallah
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Expert Comment

by:grblades
ID: 11841264
192.168.16.2 is not a public IP address. If your ISP allocates this to you I would advise that you contact them to ensure they permit PPTP VPN. Unless you know the actual public IP address and your ISP forwards traffic to it through to 192.168.16.2 you will not be able to make a VPN connection from elsewhere to your server.

PPTP uses UDP port 1723 and IP protocol 74 (GRE). You cannot normally forward protocol numbers with these home products. These home user routers are normally designed to allow people to VPN or from them and are not designed to allow people to establish a VPN to servers behind then in the internal network.
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Author Comment

by:dgadallah
ID: 11888292
I got a static Address and I am still getting problems  Remote Web Access is giving me this message VBScript Remote Desktop Connected.  What should I do
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Expert Comment

by:grblades
ID: 11889941
So you are no longer using the linksys router?
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Author Comment

by:dgadallah
ID: 11891383
Yes I am still using the Linksys Router I also upgraded the firmware on the router  It must be something with the firewall on the WIndows 2003 Server
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LVL 36

Expert Comment

by:grblades
ID: 11891480
Basically you need to forward ip protocol 47 to the VPN server however the Linksys only allows you to forward tcp and udp so basically the Linksys cannot be used.
You need a Linksys or similar which supports VPN so you can make the VPN to the router itself or you need a much better router.
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Author Comment

by:dgadallah
ID: 11891719
Ok would you know if the Linksys G VPN rotuer will work?  Also Why is Remote Web Access Working Before and know I can not remotely connect to the computer.  I can see the Homepage but when I connect then I get a vbscript remote desktop disconected.   Thanks for your Quick Response
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Expert Comment

by:grblades
ID: 11892117
With the Linksys VPN router you should be able to establish the VPN straight to the router and then access your network as if you were directly connected to it.

I don't know anything about remote web access so I cannot help there.

Where are you connecting from? Is it directly connected to the Internet or do you go through a firewall?

What do you intend to use the VPN for. Is it just for remote admin or are multiple people going to use it?
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Author Comment

by:dgadallah
ID: 11893684
I need VPN for Multiple people accessing it and I use remote web access to administer the server.

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Accepted Solution

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grblades earned 500 total points
ID: 11895882
In that case I would suggest something like a Linksys RV042 (30 VPN sessions) or the BEFVP41 (50 sessions) as entry level products which will enable your users to VPN into the router itself.

A better solution though would be either a Cisco PIX 501 or 506. These are far more configurable but a bit more complex to setup. You will get a lot of support in forums like this however as most of the VPN experts use them.
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