said by workablob:Unless your router is configured to allow ports 137, 138, or 139 NetBIOS traffic willl never leave your LAN.
Blob
So far as I can tell, the router is NOT configured to allow ports 137, 138, or 139. Is there anything useful that comes from test at »
www.grc.com/x/ne.dll?bh0bkyd2 (GRC ShieldsUP!). I always pass it ("STEALTH" everything) with flying colors if that means anything at all?
EDIT: FWIW...This is result of probing NetBIOS ports on my machine:
Your Internet port 139 does not appear to exist!
One or more ports on this system are operating in FULL STEALTH MODE! Standard Internet behavior requires port connection attempts to be answered with a success or refusal response. Therefore, only an attempt to connect to a nonexistent computer results in no response of either kind. But YOUR computer has DELIBERATELY CHOSEN NOT TO RESPOND (that's very cool!) which represents advanced computer and port stealthing capabilities. A machine configured in this fashion is well hardened to Internet NetBIOS attack and intrusion.
Unable to connect with NetBIOS to your computer.
All attempts to get any information from your computer have FAILED. (This is very uncommon for a Windows networking-based PC.) Relative to vulnerabilities from Windows networking, this computer appears to be VERY SECURE since it is NOT exposing ANY of its internal NetBIOS networking protocol over the Internet.