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 PostPost subject: OpenVPN on Windows 2000 Server        Posted: Sat Aug 30, 2008 6:16 am 
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This is the first time I've installed and configured OpenVPN. I'm running 2.0.9 on Windows 2000 Server, I couldn't bridge the connections in 2000 so I'm using the NAT routing mode. After I had everything configured properly I tested the VPN from within the office and it seemed to work fine. Their modem/router had some issue with port forwarding so I had no way to test it outside of the office. The next day Embarq delivered a new modem/router and I configured it to have the same settings as their old one plus setup port forwarding on TCP 1194 and poked a hole in the firewall. When I tested from within the office I could browse files on the server computer that was running OpenVPN BUT first I had to manually configure the TAP network adapter on the server computer. It wouldn't get any settings from DHCP. The ONLY thing that's changed is the modem/router and I've rebooted the server. Now clients connect to the VPN and aquire an IP/Subnet mask via DHCP but they can't ping any other VPN clients or the server. No traffic can get through. I've tried using the client on Windows XP SP3 and Vista SP1. I've browsed through the log files and couldn't find anything that looked like an error. Is this a common problem? Is there something simple I'm overlooking? I can post the log and configuration files if need be as well as turn the verbosity up all the way. I have terminal services access from home so I can get to everything at any time of the day and test right away. ANY suggestions are appreciated.


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 PostPost subject:        Posted: Sun Aug 31, 2008 12:14 pm 
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Quote:
TCP 1194

openVPN use UDP by default.


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 PostPost subject:        Posted: Sun Aug 31, 2008 6:41 pm 
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Yeah, I changed it to TCP. I'm thinking about changing it back after reading something about why TCP in TCP is bad. That shouldn't cause it to break though.... If I had UDP on one side and TCP on the other it wouldn't even connect. Did you read my entire post? It says it connects; I have TCP selected in the client and server settings.


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 PostPost subject:        Posted: Mon Sep 01, 2008 12:15 pm 
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Any firewall on the OpenVPN server ?
Can you see packet on the vpn interface on the server ?


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 PostPost subject:        Posted: Mon Sep 01, 2008 6:22 pm 
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There is no firewall on the server that the OpenVPN server is running on. Also, even if I connect from a machine (with the firewall disabled) on the same network I can't even ping across it. The virtual ethernet adapter on the server says 1 packet recieved and 0 packets sent. The only firewalls on this network are in the modem/router and the individual machines, which are using the built in XP firewall.

I'm just going to delete everything except the keys/certs (they took forever to make) and start again. I built everything from the sample configuration files anyway. This time I'll do it from scratch. I've asked here as well as on two other boards (one specific to OpenVPN) and in their channel on FreeNet and no one has an answer for me.

UPDATE: I didn't do anything. I went into the office and the VPN worked. I then changed it over to UDP... everything seems fine.


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