Firewall/NAT

no problem opening/forwarding ports to uTorrent on Win7 U on same network.

external test sites show port intended for freeNAS as closed, Win7 port open.

I have a good deal of experience with networking, but I'm stumped on this one.

what info can I give you to sort this (yes I FAQ'd and searched and couldn't find anything similar enough).

My m0n0wall runs in the DMZ + of a uVerse 2wire "Home Gateway".
all other hosts on my network are behind the m0n0wall.

I set up a freeNAS (.72) to be a ZFS Pool storage Grateful Dead live show Torrent machine.
I've run a freeNAS (.71) as the same type of animal behind less sophisticated router successfully.

obviously I am asking similar Q's in both the freeNAS and Transmission forums.

starting to make me crazy

I'm not overly familiar with FreeNAS (I know it is based on m0n0wall).  Could you explain the ports you're trying to use a little more, including port numbers?

freeNAS isn't really based on M0n0wall but rather on freeBSD (like M0n0wall).
it's a file server that will run additional services like uPnP server, web server etc.

For the bit torrent client it employ's Transmission.

in the Transmission configuration I can set it to listen on any port on the freeNAS box i want.

uTorrent on the Win7 box listens on port 31417, so I set Monowall to NAT that port from my public IP to the Win 7 box using the same port. (<- which works).

When I do the same for the freeNAS box ( for example 41444) it does not work.

I match all the same settings as I have for the Win7 box (again i'm NOT new to this) and the port does not appear open to outside tests.

i suppose a relevant theoretical question would be how do the external port testing sites determine if a port is open?  do they need to contact a service running on the other end of that connection? or do they just test if they get dropped or not?

I suppose if they require a service to answer on the back end then this is really a freeNAS/Transmission issue.

in typing this I figures a way to test this using my WinSrv08R2 box...

results to come   

A test site like http://www.utorrent.com/testport?port requires that a service be running on the port to be tested. It's not enough to just have the port open on the firewall and be forwarded to a host - the host must be listening and respond.

roger that.

M0n0wall is performing exactly as directed.

just used the same port NAT/Rules I was trying to send to freeNAS/Transmission and changed the destination to uTorrent on WinSrv08R2 (and told uTorrent to listen on that port as well) and all is working.

back tot he Transmisson forum for me!!

THanks