[NZLUG] Anything strange going on out there???

Daniel Lawson daniel at meta.net.nz
Thu Jun 6 14:17:45 NZST 2013

> I've got a dozen or more OpenVPN connections to various machines
> worldwide, using the remote end as the server, and myself as client.
> some of these have been running for years.
> Suddenly only 2 can connect. The rest are timing out.
> Any ideas why?

UDP conntracking on your router might be overflowing. I've seen similar issues with TCP (e.g., ssh) on a router where a user had lots of p2p apps running.  (UDP is stateless, but there may still be a conntrack entry for your NAT device

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