I'm currently in the process of trying to persuading my dialup internet provider not to block port me from accessing another machine using SMB over TCP/IP, and was wondering about the answers to a couple of questions to help me in my battle: 1. Would blocking only incoming on port 139 allow them to block people from opening up their machines to the world, while still allowing me access to SMB Servers elsewhere. 2. Do I care about port 137 if I'm not using browsing, simply grabbing names from a lmhosts & hosts file? 3. Are M$ Clients and Servers and Samba only generating noise on port 137 when nothing is actually being done (nothing on port 139)? Basically I want to know if they block all traffic on port 137 and incoming on 139 I will still be able to access remote SMB servers, but no one will be able access my machine with SMB and there will be no traffic when things aren't actually happening (for auto-dialling systems). Hope someone can help, Simon Hyde