DCE endpoint resolution
EPMAP, or End Point Mapper, operates on port 135 and is primarily used by Microsoft RPC services. It helps in mapping network services to their respective ports, facilitating communication between clients and services. This service is crucial for various Windows-based network operations.
What is DCE endpoint resolution
EPMAP, also known as End Point Mapper, is a service that operates on port 135 and is integral to Microsoft RPC (Remote Procedure Call) services. It functions by mapping network services to their respective ports, enabling seamless communication between clients and services. This mapping is essential for the proper functioning of various networked applications and services in a Windows environment.
The End Point Mapper service is a critical component in the Windows operating system, particularly in enterprise environments where numerous services and applications need to communicate over the network. It ensures that RPC requests are directed to the correct service endpoints, thereby facilitating efficient and reliable network operations.
Historically, EPMAP has been a part of the Windows operating system for many years, playing a vital role in the network communication framework. Its importance has only grown with the increasing complexity and interconnectivity of modern IT infrastructures. However, due to its critical nature, it is also a target for various security threats, making it essential to secure this port properly.
DCE endpoint resolution runs on TCP and UDP port 135 and is official IANA port.Security risk
Having port 135 open and the EPMAP service running can expose the network to various security risks, including unauthorized access and exploitation by malicious actors. This port is often targeted in network attacks, making it crucial to implement proper security measures such as firewalls and access controls to mitigate potential threats.
In our UFW tutorial you can follow instructions how you can configure UFW to close port 135. Use StackChanges to monitor if the DCE endpoint resolution port is closed and stays closed. StackChanges will send an alert if port 135 is open again.