Problems with firewall

[Gianluca Romito]

Hi to all, I'm not sure if this is the right place to post souch question... anyway, I've a RedHat 7.2 server that has the samba 2.2.3a package installed (compiled from source)
Files/Printer sharing works well, but if I turn on a firewall on souch server I've BIG problems printing!
The firewall must hide this server (don't ask me why) from other machines so that it can only be accessed from 10 clients. I've setup a policy that does so (infact file sharing works well) but I cannot connect to printers! Is it correct under a win2000 client site to open only ports from 137 to 139 or does the win2000 sharing protocol need some other ports?

Thanks in advance, Gianluca Romito