:135
(TCP)
High Risk
MS RPC
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TCP — System & Infrastructure
Port Overview
Port Number
135
Service Name
MS RPC
Transport Protocol
TCP
Category
System & Infrastructure
Security Risk
High
Port Range
Well-Known (0-1023)
What is Port 135?
Microsoft RPC Endpoint Mapper. Used by Windows systems for DCOM and RPC services. Frequently targeted by worms and should never be exposed to the internet.
TCP
System & Infrastructure
Commonly Used
Security Considerations
Port 135 (MS RPC) is classified as high risk. This port is a common target for automated scanning and brute-force attacks. If you must expose it, restrict access to known IP addresses.
Recommendation: Use firewall rules to whitelist trusted IPs. Enable rate limiting and intrusion detection.