To mitigate the security risk linked to this port, several measures can be taken:
Firewall Configuration
Disable Legacy Protocols
Regular Patching
How to explain
Firewall Configuration: Restrict access to port 139 at the network perimeter using a firewall. Allow only necessary and authorized traffic.
Disable Legacy Protocols: If feasible, transition to more secure alternatives (e.g., SMBv3) or disable SMBv1, which uses port 139 and is susceptible to vulnerabilities.
Regular Patching: Ensure systems are updated with the latest security patches to address potential vulnerabilities associated with port 139.
The Complete Question
Your supervisor is concerned about the use of port 139 in your environment. What measure do you recommend taking to deal with the security risk?
Port 139 is commonly associated with the Server Message Block (SMB) protocol used for file and printer sharing.