# TCP 135: MSRPC

> 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. If you have remote users who VPN into your network, you might need to open this port on the firewall to allow access to the Exchange server.
>
> \-- [*Wikipedia*](https://en.wikipedia.org/wiki/Microsoft_RPC)

## Related

* [Impacket](https://d4rk1337.gitbook.io/the-pentesters-cheat-sheet/misc/impacket)

## Enumeration

```bash
nmap --script=msrpc-enum <ip>
```