 |
 |
On Mon, May 23, 2005 at 02:55:00PM -0400, Wendy Tate wrote: > Hi there; > > Can anyone think of something that changed in the past week or so that would > cause an incoming connection to an MSU computer to fail? One of our > economists has called "VNC" set up on his Windows XP PC. He used this to set > up an account so a user at the World Bank could access the computer. > Suddenly it has stopped working. The computer has internet connectivity, but > the remote machine can't get to it. > > The remote user sent me this paragraph: > > Mr. X's IP address is 35.10.68.(*). However this address has not been > accessible from outside of the university -- cannot even be pinged -- for > the past couple of days. The question is why. I tried to trace the route > from the World Bank to his address and it failed at the point of reaching > SPRINTLINK ( sl-gw19-rly-7-0-TS6.sprintlink.net > > [160.81.221.69] (unreachable). Thus I wonder if you may have a problem with > your internet connection (I assume Sprint is your provider). > > Any ideas you might have would be welcome! I don't believe anything should have changed on MSU's end that would be affecting this type of connection. As for doing a ping or traceroute from an external address to MSU, that would be blocked at the MSU border router. However, the last good IP address you should see in a traceroute would be 198.108.23.209 (ge-0-0-0x23.msu5.mich.net), not the SprintLink IP address. I also see a failure on the SprintLink IP address 160.81.221.69 when doing a trace from MSU, but that system may just be blocking ping/traceroute to its own address. If you can send me the remote user's IP address, I'll see if there's anything further I can determine. Doug -- Doug Nelson, Network Manager | [log in to unmask] Academic Computing and Network Services | Ph: (517) 353-2980 Michigan State University | http://www.msu.edu/~nelson/