VPN.BAT Tool to assist with diagnosing VPN problems Les Cottrell.

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Presentation transcript:

VPN.BAT Tool to assist with diagnosing VPN problems Les Cottrell

Requires Perl Available at: download & install

Requires script copy vpn.bat to desktop from: groups on winsan1 –v:\scs\networking\netdev\pl\vpn.bat

Execute Double click icon to run: Pops up DOS window which provides results of diagnosis:

Diagnosis 1 of 2 Checks version of Windows (W9x, WNT, W2K) and service level etc. –Fail => Sorry I can’t help Checks whether user name is in SLAC domain –Warning => Need to specify SLAC\userid for VPN Tries/pings loopback Ethernet port Uses netstat -r to find gateway Pings gateway –Fail => No Internet connection Checks host registry to see if RAS installed, if not: –Fail => No RAS installed

Diagnosis, part 2 of 2 Pings well known host (ns1.slac.stanford.edu) –Fail => Can’t ping ns1.slac.stanford.edu Does tracrt ns1.slac.stanford.edu, looks at output to see if first node in route is a VPN server –Fail => Can’t find VPN server in route Checks via nbstat -A to see whether there is an active VPN client –Fail => Looks like VPN server is not answering

Tested with: Windows 98, NT, 2000 Ricochet DSL

Example of some of the output You are running WinNT or 2K, major version 4, Service Pack 6, minor version 0, build on atlas( ). OK, you are running Windows NT Service Pack 6, so I will try to help. vpn.bat checking if loopback is working on atlas... vpn.bat OK found loopback responds to ping on atlas vpn.bat looking for gateway using netstat -r... vpn.bat OK found gateway interface metric 1 vpn.bat checking if gateway is reachable from atlas... vpn.bat OK gateway responds to ping from atlas You appear to have RAS installed on atlas so I will continue checking...