This tutorial will be helpful for beginners to install and configure telnet on CentOS 8 and Redhat enterprise Linux 8 systems
Telnet allows users to log on to remote systems and run programs on that system and the disadvantages of using this protocol due to in-secure.
Installation Steps
Step 1: Install telnet packages
Check for the telnet package preinstalled or install the packages
dnf install telnet telnet-server
Step 2: Add telnet service to Firewalld
Telnet communicates via port 23 and needs to be allowed in the inbuilt firewalld
firewall-cmd –add-service=telnet –zone=public
Execute the command once again with “-permanent” flag to be persistent across firewalld restarts
firewall-cmd –add-service=telnet –zone=public — permanent
Step 3: Add telnet service to SELinux
If SELinux is enabled, add the below command, else skip this step
semanage port -a -t telnetd_port_t -p tcp
Step 4: Start the telnet service
Start telnet service and enable it across reboots
systemctl start telnet.socket
systemctl enable telnet.socket
Step 5: Verify the process is running
