Management of linux Remote Login tools

Linux Remote Login tool management 1. linux check whether the telnet service is installed with rpm-qa telnet if the system has not installed the Telnet service, insert the system disk for installation. 2. Start and Stop the telnet service. the Telnet service does not run as an independent daemon like other services (such as HTTP and FTP). It uses the xinetd program for management, which not only improves security, you can also use xinetd to manage the configuration of the Telnet server. After the Telnet service is installed, it is not enabled by xinetd by default. You also need to modify the file/etc/xinetd. d/telnet to enable it. In fact, the/etc/xinetd. d/telnet file is part of the xinetd program configuration file. You can use it to configure the running parameters of the Telnet server. Edit the/etc/xinetd. d/telnet file, find the statement "disable = yes", and change it to "disable = no ". Run the following command to restart the xinetd service: #/etc/init. d/xinetd restart, or # service xinetd restart telnet service 3. Modify the telnet service port. the Telnet server listens to all client connections on port 23 by default. For security reasons, you can change the port of a server listener. Edit the/etc/services file and find the statement: telnet 23/tcp telnet 23/udp. Change the port number of the two statements to another port (such as 2323. 4. the SSH service system is enabled by default. Generally, SSH is used, because SSH is safer than TELNET and may be helpful to you.