Remote client not responding to server port 35622 request

general discussion
1

. 0.24 server and 0.38 client.
. Local client backing up ok
. Remote client added from Status->Show Details page but is never reached by server.
. Remote client is via OpenVPN.
. Tested with remote XP FW down
. Remote client is XP Home Edition
. Tcpdump show the packet heading out to the client from the server
. Hitting client on wrong port gets proper port not up error so appears client is up
. Monitoring on all server interfaces does not show any client packets coming in on wrong interface
. Have not tried any other remote clients

Any idea why client is not responding to server UDP ping or what I can do to diagnose this issue?

2

I don’t really have any idea.

I use OpenVPN with a bridge device on my backup server and it even detects a connected PCs automatically.

Does that mean the packets get sent to the correct port (35622) but never arrive? (iptables problem?)

3

[quote=“uroni”]I don’t really have any idea.

I use OpenVPN with a bridge device on my backup server and it even detects a connected PCs automatically.

Does that mean the packets get sent to the correct port (35622) but never arrive? (iptables problem?)[/quote]

Sorry, just ,meant I tried an invalid port to make sure I was reaching the client. Tried removing any iptables rules that might be in the way with no luck.

My OpenVPN is not bridged, but routed. Maybe need to test a second PC not on same subnet and not using OpenVPN. Different subnet appears to be the only common factor on my end.

4

Just tried a Windows 7 PC on a different network with a different subnet and it worked no problem.

Does the client log anywhere that it is getting the server UDP pings?

5

Yes if you set the loglevel to “debug” in “args.txt” it logs that into “debug.txt”

6

Ok,

Debug.txt says:

09/14/11 18:27:35: Receiving UDP packet…
09/14/11 18:27:35: UDP: PING received… sending PONG

WireShark running on the PC shows the outgoing packet.

If I use NC on the PC I can not get any UDP traffic over OpenVPN/Tap interface, but can by just shooting the UDP packet out over the PC’s primary interface to my remote server.

I’ve tried a different version of OpenVPN with the same results.

So, at this time, looks to be OpenVPN/Tap related, nothing to do with Urbackup. I’ll dig into that end, but not getting any good ideas from Google yet :). Maybe I will try running OpenVPN bridged :).

Thanks,
JES