Should you close port 135?

Disabling TCP port 135 will NOT affect Local DCOM/Raw RPC server component because they do not need network. Disabling TCP port 135 will only affect some client machine which directly use DCOM remote activation (i.e. VB CreateObject(“Excel.

What port does DCOM use?

TCP port 135
TCP port 135 is the DCE endpoint resolution point that is used by DCOM. By default, DCOM assigns ports dynamically from the TCP port range of 1024 through 65535.

What is MSRPC service?

MSRPC is an interprocess communication (IPC) mechanism that allows client/server software communcation. That process can be on the same computer, on the local network (LAN), or across the Internet. Its purpose is to provide a common interface between applications.

How do I open port 135 on Windows server 2016?

At Windows Firewall With Advanced Security, click on Inbound Rules. Click on New Rule at the right-hand side panel. At New Inbound Rule Wizard, Select Port radio button and click Next. Select TCP/UDP & specify the port you wish to open in Specific Local Ports box OR check All local ports & click Next.

What ports does DCOM use?

DCOM uses Port 135 to establish communication. Once the OPC Client and Server are able to communicate, they will negotiate new port numbers for communication dynamically.

What service is MSRPC?

The Microsoft Security Event Log over MSRPC protocol (MSRPC) is an outbound/active protocol that collects Windows events without installing an agent on the Windows host.

What is MSRPC traffic?

Microsoft Remote Procedure Call (MSRPC) is an interprocess communication protocol mechanism that adversaries can abuse to perform a wide range of malicious actions.

Can I disable MSRPC?

MSRPC is Microsoft remote procedure call. You can disable it by : goto run — type services. msc — search for RPC (remote procedure call) — stop/disable it.

Is port 135 TCP or UDP?

Port 135 Details

Port(s)	Protocol	Source
135	tcp,udp	Wikipedia
135	tcp,udp	Wikipedia
135	tcp	SANS
135	udp	SANS

How do I close MSRPC port 135?