What is TCP 135 port used for?
Port 135 Details. Remote Procedure Call (RPC) port 135 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.
What protocol is port 135?
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.
Should I 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 happens if I block port 135?
Blocking ports 135 and 445 has the effect of disabling SMB file-sharing on your Windows Server. If your boss is asking you to do this to “fix” the threat posed by WannaCry, then you should make your boss aware that this is the equivalent of deleting your e-mail address in order to avoid getting spam messages.
Is port 135 a NetBIOS?
NetBIOS provides three distinct services: Name service (NetBIOS-NS) for name registration and resolution via port 137….Workgroup VS Domain.
| Port | Protocol | Service |
|---|---|---|
| 135 | TCP | MS-RPC endpoint mapper |
| 137 | UDP | NetBIOS Name Service |
| 138 | UDP | NetBIOS Datagram Service |
| 139 | TCP | NetBIOS Session Service |
What port is RDP listening on?
TCP port 3389
RDP servers are built into Windows operating systems; an RDP server for Unix and OS X also exists. By default, the server listens on TCP port 3389 and UDP port 3389. Microsoft currently refers to their official RDP client software as Remote Desktop Connection, formerly “Terminal Services Client”.
How do I check if port 135 is open?
Open the Start menu, type “Command Prompt ” and select Run as administrator. Now, type “netstat -ab” and hit Enter. Wait for the results to load, port names will be listed next to the local IP address. Just look for the port number you need, and if it says LISTENING in the State column, it means your port is open.
How do I open TCP port 135?
To open the DCOM port, follow these steps:
- Click “Start”, and then click “Control Panel”
- Double-click “Windows Firewall”, and then click the “Exceptions” tab.
- Click “Add Port”.
- In the “Name” box, type “DCOM_TCP135”, and then type “135” in the “Port number” box.
- Click “TCP”, and then click “OK”.
- Click “OK”.
Can you turn off RPC?
Many Windows operating system procedures depend on the RPC service. Microsoft recommends that you don’t disable the RPC service.
Can I block RPC?
It is not possible to simply disable the RPC service as there are many essential parts of Windows that require RPC to be running even though they do not make network connections.