Port 135 — MS RPC

TCP/UDP · Port 135 is used for Microsoft Remote Procedure Call (MS RPC) over TCP and UDP. This port is responsible for handling RPC requests and responses between computers, making it a critical component of Windows-based networks. Security relevance lies in the potential for exploitation by attackers to gain unauthorized access or control.

Port Number: 135
Service Name: MS RPC
Protocol: TCP/UDP
Common Software: Windows RPC

Security Notes

Review IANA registry for port 135 usage. Apply principle of least privilege - only open ports that are required.

FAQ

What is port 135 used for?

Port 135 is used for MS RPC. Port 135 is used for Microsoft Remote Procedure Call (MS RPC) over TCP and UDP. This port is responsible for handling RPC requests and responses between computers, making it a critical component of Windows-based networks. Security relevance lies in the potential for exploitation by attackers to gain unauthorized access or control. Common software: Windows RPC.

Is port 135 dangerous to leave open?

Review IANA registry for port 135 usage. Apply principle of least privilege - only open ports that are required.

How do I check if port 135 is open?

Use nmap: nmap -p 135 <target> or check locally: ss -tlnp | rg 135