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Actiontec DSL modem lost all setting reconfigured and now can't access VPN

Posted on 2006-06-17
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Last Modified: 2010-04-12
Our actiontec DSL modem recently had a melt down and lost all configuration (qwest thought maybe power spike issues) after reconfig I can no longer access my VPN. If I am inside the network I can use local address and VPN answers instantly. Outside of network using public IP the VPN never gets through for server to answer?? Any help would be great as I have two remote offices not able to work.

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Question by:jrsnork
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8 Comments
 
LVL 77

Expert Comment

by:Rob Williams
ID: 16927993
Based on your description I assume you are using a Windows standard PPTP VPN. If so the router needs to be configured to "port forward" all traffic on port 1723 to the VPN server. Then you probably also have to enable PPTP pass-through or VPN pass-through.
Which model Actiontec? You may be able to find specifics by clicking on your model and then click on the link for Point To Point Tunneling:
http://www.portforward.com/english/routers/port_forwarding/routerindex.htm
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Author Comment

by:jrsnork
ID: 16928565
That rocks. I will be back on site tomorrow and give it a shot!!
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LVL 77

Expert Comment

by:Rob Williams
ID: 16929630
jrsnork, I just "clued in" that this and the slow workstation connection question are both you. Your VPN will work fine with 1 NIC. The following is a great site if you want to review you configuration:
http://www.onecomputerguy.com/networking/w3k_vpn_server.htm
Word of caution though, you are using SBS,  SBS has many interrelated components, if making changes to anything check to see if there is a wizard for doing so. The wizards help to keep all related services configured properly. You can also re-run a wizard on a configured service. If changing subnets and or removing a network adapter (no problem doing so but you can also do with 2 NIC's and subnets) first run the IECW (Internet and E-Mail Connection Wizard) and then the remote access wizard. To do so open the Server Management console, then under Internet and E-mail run "Connect to the Internet" and next "Configure Remote Access"
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Author Comment

by:jrsnork
ID: 16930713
I am getting to the point where it is sending username and password but isn't getting beyond that?? I think I am close but still stuck? The DSL modem seems to be taking the request but I am not convinced that it is sending it to the right place. If I make a VPN call to the server from my workstation inside the network the server answers and authenticates right away. Can I then assume that it is setup correctly on the server and I am still missing something on the DSL modem??
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LVL 77

Accepted Solution

by:
Rob Williams earned 2000 total points
ID: 16930794
Which model Actiontec, perhaps I can supply more detailed information.
Also what is the error # you are getting, or does it just time out?

Log on to the VPN server machine and go to  http://www.canyouseeme.org   check the IP, which is your WAN/Public/Internet IP, too verify that is the IP to which you are trying to connect. While on that site, enter 1723 in the box to test if port 1723 is open/forwarded properly.

You also need to allow GRE by enabling PPTP pass-through on the Actiontec, if available, but I don't think you are getting far enough for that to be the problem. Also if the office network is 10.0.2.0 then the remote network has to be something else. Again, I don't think that is the problem at this point.
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Author Comment

by:jrsnork
ID: 16931119
Actiontec GT701WG

Error 721

I am not on site now but am able to remote into the DSL modem. Still unable to connect the VPN. Is there some way to enable PPTP pass- through? I don't see one?
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Author Comment

by:jrsnork
ID: 16931182
RobWill you are my guy today!! It was the GRE setting. I found it!!  I am in on my network from my office!!!!!Thank you Thank You
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LVL 77

Expert Comment

by:Rob Williams
ID: 16931224
Glad to here you were able to find it.
Something funny going on here with the Internet, I cannot get on to about 10 websites, Actiontec being one of them, yet I checked with a fellow in the southern hemisphere and he can connect with out a problem. Oh well you are up and running.
Cheers, and thanks for the points,
--Rob
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