Ferries and Firewalls

firewall irishferries ssh travel

Ferry wi-fi sign

Not long ago we travelled to Ireland on the ferry. The ship's wifi was pretty reasonable quality in terms of speed (it is based on some sort of satellite system) - but it had some curious firewall effects going on. In particular, ssh would sometimes work, and sometimes be blocked (with everything else, including ping to the intended server, working just fine). Annoying - what could I do about it?

Read more...