NetBIOS
Network Basic Input/Output System
What is NetBIOS?
NetBIOS allows applications on different systems to communicate with one another over the LAN. It is used for:
Sharing printers and files
Remote procedure calls
Exchange messages
...
If NetBIOS is not properly configured, it can leak:
Computer names
Usernames
Domains
Printers
Available shares
...
NetBIOS Enumeration
NetBIOS uses the following ports:
UDP 137: name services
UDP 138: datagram services
TCP 139: session services
Reference
Last updated
