Telnet is a remote login protocol that can connect to a remote server and execute commands through a Telnet client. In Linux systems, you can install and configure a Telnet server so that other users can connect to your system through a Telnet client. This article will show you how to install Telnet server on Linux and perform basic configuration.
Step 1: Install Telnet server software
First, we need to install the Telnet server software. In most Linux distributions, Telnet server software is usually provided through the "telnetd" package. You can install the telnetd package using the following command:
sudo apt install telnetd # 对于Debian/Ubuntu系统
sudo yum install telnetd # 对于CentOS/RHEL系统
Step 2: Configure Telnet Server
Once the telnetd package is installed, we need to do some configuration to ensure that the Telnet server is working properly. Here are the steps to configure a Telnet server:
2.1 Edit Telnet server configuration file
Open the Telnet server's configuration file using any text editor such as vi or nano. On Debian/Ubuntu systems, the configuration file is located at /etc/inetd.conf, while on CentOS/RHEL systems, the configuration file is located at /etc/xinetd.d/telnet.
sudo vi /etc/inetd.conf # 对于Debian/Ubuntu系统
sudo vi /etc/xinetd.d/telnet # 对于CentOS/RHEL系统
2.2 Comment out the default telnet line
Find the default telnet line in the configuration file and add a comment sign (#) before the line to disable the default