This is the single most dangerous port on the Internet. All "File and Printer Sharing" on a Windows machine runs over this port. Most of the people who use Internet leave their hard disks exposed on this port. This is the first port hackers want to connect to, and the port that firewalls block.
PORT 139 – Information
- Port Number: 139
- TCP / UDP: TCP
- Delivery: Yes
- Protocol / Name: [Malware known as Qaz]
- Port Description: [malware info: Qaz]
- Virus / Trojan: Yes, Caution!