Telnet port 23 problems

We have explained some problems in the Telnet mail system. Including port 23 and port 110. Today, we will mainly explain the content about Telnet 23. In the past, we learned that the telnet service has some security vulnerabilities. So sometimes we close this service or port. Here we will explain how to disable Telnet port 23. Let's take a look at this port. Port 23 is mainly used for Telnet remote logon. It is a common logon and simulation program on the Internet.

Port Description: port 23 is mainly used for Telnet remote logon. It is a common logon and simulation program on the Internet. You also need to set the client and server. The client that enables the Telnet service can log on to the remote Telnet server and use the authorized user name and password to log on. After logging on, you can use the Command Prompt window to perform corresponding operations. In Windows, you can type the "Telnet" command in the Command Prompt window to remotely log on using Telnet.

To disable port 23 via Telnet, we recommend that hackers use the Telnet service to remotely log on to the Unix service and scan the operating system type. In addition, the Telnet service in Windows 2000 has multiple serious vulnerabilities, such as permission escalation and denial of service, which can cause remote server crash. Port 23 of the Telnet service is also the default port of the TTSTiny Telnet Server) Trojan. Therefore, we recommend that you disable port 23.

Disable Telnet port 23

1. Click Start> set> control, select administrative tools, and double-click open.

2. on the "Administrative Tools" Page, select "service" and double-click it.

3. In the service list of the "service" dialog box, find the Telnet service.

4. Right-click and select "properties ".

5. In the "Telnet properties" dialog box, change the Startup Type to "Manual ".

6. Click "stop" to change the service status to "stop" and click "OK" to disable Telnet port 23.