[BlueOnyx:23570] 5209R - iptables issue

[Colin Jack]

I have a strange issue on a 5209R VPS.

After a few weeks it stops connecting to blueonyx.it even though name resolves okay.
So no access to shop or news.

Also cannot connect via SSH to other VPS on the same network etc.

If I run iptables -F everything starts working again and stays like that for a few weeks and then breaks again.

Can anybody suggest a remedy?

I haven't seen this on any of our other VPS - 5207R, 5208R, 5209R

Thanks

Colin