Friday, August 6, 2021

Port 135 (Remote Procedure Call/RPC)

I have a question regarding port 135. I did a netstat scan on my laptop today and found port this:

TCP 0.0.0.0:135 CTC2-###-#####:0 LISTENING

So I looked up this port "135" and I found that it is "used in client/server applications (might be on a single machine) such as Exchange clients, the recently exploited messenger service, as well as other Windows NT/2K/XP software."

But I'm kinda confused on what this means. What is the purpose and services this port is supposed to provide? Such as how SMTP is used for email services, HTTP is used for webpage services, and RTMP is used for streaming services. What is the service Remote Procedure Call (RPC) is trying to provide?



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