Problems Accessing Samba through a Firewall

[heubach at heubach-edv.de]

Hello out there! 

I've got some problems with Samba 2.2.0 sitting in the DMZ behind a 
firewall. 

I opened ports 137/138 UDP and 139 TCP to Samba. When I try to connect the 
Samba machine from a Windows NT 4.0 Workstation I get the error message 
"Networkpath not found". If i open all ports to the Samba host it will work. 
After this I close all ports unless 139 TCP and it still works. But it stops 
working after logging out and on again to the Windows NT host. 

This is a bit weird and I don't know exactly where to start. I tried to 
check netstat on both Linux and Windows but it doesn't say much. 

I recognized that Samba opens ports above 1024 after establishing a 
connection but I don't know the reason for this. 

The firewall is a Raptor Firewall and I know only little about it. (It isn't 
maintained by me.) 


Anybody any idea ? 

Regards
Manfred