Mathew,

The only addition to the bare, no doubt minimal, CentOS VPS is Tor run as an exit. The port failing to be accessible is 9030 - the dir port.
The interesting thing is that another similar VPS was working but now 9030 is not accessible.
Perhaps paying for a VPS a year in advance and no written objection to Tor left me vulnerable to various methods of reducing their exposure to copyright litigation. Other VPSs still have the statement "Tor relays are ok" on their site yet emailed me that they must stop once I'd paid a year in advance. 
So if I can avoid discussion with them and force the port open it might keep one exit running for a while.

Robert

>
> It's CentOS 6. Apart from that I don't know what you need to know.
> I presumed unix type commands work in general.
> Any help from the list will probably beat the help desk.
>
> Robert

Most distros I have come across have all ports open by default. Do you know which ports you would like open? Is it just the required ports for Tor + SSH, or are you running additional services?

Most users use IPTables for firewalling.

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