I’m trying to get my head around a problem with the list all hosts page. All my machines show a red dot and say “Host Down” Some are XP, some Vista and some 7.

If I ping lucy-laptop I get a response, no problem there with DNS or resolving host names.

If however I turn off the firewall on any given machine, I get the green dot, so lucy-laptop then says “Host Up”

So, three questions:

1. How exactly does FOG test whether a host is up or down?
   [S]2) What do I need to change in the firewall, I have thus far failed to find what rules I need to add to make this work and respond correctly without turning off the firewall altogether. [URL=‘http://www.fogproject.org/wiki/index.php?title=Managing_FOG#Host_Status’]The wiki[/URL] only refers to the following with out going into detail.[/S][QUOTE]If after this, you still can’t ping your clients, the problem may be due to a firewall issue with the clients. In this case, client specific configuration changes might be needed. [/QUOTE]3) Could FOGProject possibly implement this another way which doesn’t need changes to every client machine? I would think it either possible to just use the response from ping itself or through using the FOG client service.

Many thanks in advance for your patience and help. If I figure it out or if I get a working solution here, I’ll put it in the wiki if you don’t beat me to is first.

[U][B]Edit:[/B][/U]
I have after much digging made it work by editing the windows firewall to allow port 7 UDP and to allow “Allow outgoing destination unreachable” under the ICMP settings. For some reason I don’t think this is right or should be the case. Before I write this into the wiki is there a correct fix or are we stuck with this rather ugly workaround? Surely this isn’t by design?[B][/B]