Port 135 is the RPC Endpoint Mapper service. It is a service that allows other systems to discover what services are advertised on a machine and what port to find them on.
Port 135 may refer to: . in computing — Distributed Computing Environment (DCE), a framework and toolkit for developing client/server applications in Internet — Remote procedure call (RPC), a communication process that allows for executing a subroutine or procedure in another address space Mar 30, 2016 · TCP port 135 uses the Transmission Control Protocol. TCP is one of the main protocols in TCP/IP networks. TCP is one of the main protocols in TCP/IP networks. TCP is a connection-oriented protocol, it requires handshaking to set up end-to-end communications. Port(s) Protocol Service Details Source; 139 : tcp,udp: netbios-ss: NetBIOS is a protocol used for File and Print Sharing under all current versions of Windows. While this in itself is not a problem, the way that the protocol is implemented can be. There are a number of vulnerabilities associated with leaving this port open. NetBios services: By default, the HTTP port that's used for client-to-site system communication is port 80, and the default HTTPS port is 443. Ports for client-to-site system communication over HTTP or HTTPS can be changed during setup or in the site properties for your Configuration Manager site. Jul 26, 2020 · Three systems within Windows NT/2000/XP/2003 share TCP port 135: DCOM, Task Scheduler, and Distributed Transaction Coordinator (MSDTC). Since running any of these services will hold TCP port 135 Oct 24, 2019 · The Remote Procedure Call Service in Windows runs on Port 135. By default this port is reported as 'Open' when I portscan the system in question. Is there a way to block this port, despite the fact it supports the Remote Procedure Call essential service?
TCP port 135 is shared by DCOM(based on RPC) and Raw RPC server component as a public entrance of TCP/UDP/NamedPipe transport layer which is chosen by each DCOM/Raw RPC server component, so it's not simple as "disabling DCOM on this computer" will stop port 135.
The Best Line of Defense. Port 135 is used in a manner that is similar to Sun’s UNIX use of port 111. The SCM server running on the user’s computer opens port 135 and listens for incoming requests from clients wishing to locate the ports where DCOM services can be found on that machine. What is Port 135? 3 Ways to Disable Port 135 Windows OS
Service overview and network port requirements for Windows
What is Port 135? 3 Ways to Disable Port 135 Windows OS