On 26/04/10 15:25, Steve Thomas wrote:
Don't know if anyone can help with this. It may be unique to Adelade U.Anyway, the one significant problem I have with Ubuntu is using vpn to connect to servers at Adelaide. I maintain a site there, and develop content for the site on my laptop. Whe I need to update the site, I run rsync to upload changes from the laptop.All good until I upgraded to 8.10, when vpn went feral. Now on 9.10 and the problems continue.I've been through all the forums, and while there's lots about vpn timing out, there's nothing that matches my specific symptoms.What happens is, vpn connects with no problems. I start an rsync, no problem. It runs for a bit, but then appears to stall. If I wait long enough, I find it's still connected and working. Eventually it may finish. Sometimes it never finishes before I run out of patience. So something is causing vpn to run really, really slow.And it's not the server, because if I try connecting to another server in the same vpn session, that's really slow too.Running standard vpnc + network manager. And yes, I've tried all the suggested alternatives. Makes no difference. Tempted to believe the Uni just doesn't like Linux. :/Any ideas?
First thing i would do is take a network trace with wireshark and have a look for any DNS timeouts or other anomalies. My first guess is DNS and/or routing misconfiguration.
After the VPN starts and before you start your rsync, try running the following from the command line:
netstat -rn host your.rsync.server ping your.rsync.servertelnet your.rsync.server (22|873) # depending on whether you use rsync over ssh or rsyncd
Feel free to post your results here, or if you're nervous about that, email me and i'll see what i can work out from it.
Paul
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