Virtual Private Networks VPN Mind-Bender for the best Network Admins

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VPN Mind-Bender for the best Network Admins silvrrwulf 02-03-07
Posted by on February 3, 2007, 12:02 am
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Hi All. I stumbled into a vpn network situation I don't know how to
handle... any help would be appreciated.

A server that was handling Routing and remote access went down, and
the previous admin somehow had that box set up to forward VPN
connections over to the Win 2003 AD server. Thinking I'd just
eliminate the broken box, I set up the AD server with a VPN through a
"custom" on routing and remote access.

I can resolve a vpn connection internally (10.0.1.3) but not
externally (72.56.23.x). I'm sure that port 1723 is forwarded, and
have had our ISP (who controls the modem/router) test it - they can
telnet in on port 1723 from insiode the network but not from outside.
There are no visable firewalls on the 2003 server.

Thinking outside the box, I figured I'd use Hamachi to bridge the
network between Lafayette and Houston, but for some reason it won't
install correctlly on the LAfayette win 2000 sp4 server. Furthermore,
while I can RDP into the 2003 server via hamachi, I cannot browse the
network (it says client connections aren't allowed from this computer,
although everything was working fine with the old routing server was
up).

I've worked around it for the moment by having houston VPN into our
windows 2000 box, but that cuts off another office in a different city
that needs to get to Houston.

Is there some invisable firewall or setting that could be disallowing
packets from port 1723 on the windows 2003 server? Is there something
I'm missing? I would SINCERELY appreciate any help or advice anyone
has. I'm also open to the suggestion of other easy 3rd party tools to
get this up and going. If anyone has any advice, I'd really love to
hear it.


Thanks so much.

~Lance


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