Configure telnet service
We know that SSH service is more secure than telnet, however sometime we need to configure telnet service on the server for connecting remotely to the server.
So let’s move on to the practical way to configure telnet service.
1. Install the service using yum server. you need to have yum server to be configured for this command.
[root@kalwa1 ~]# yum install telnet* Loaded plugins: product-id, security, subscription-manager Updating certificate-based repositories. Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package telnet.x86_64 1:0.17-47.el6 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: telnet x86_64 1:0.17-47.el6 rhel62 58 k Transaction Summary ================================================================================ Install 1 Package(s) Total download size: 58 k Installed size: 109 k Is this ok [y/N]: y Downloading Packages: Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : 1:telnet-0.17-47.el6.x86_64 1/1 Installed products updated. Installed: telnet.x86_64 1:0.17-47.el6 Complete! [root@kalwa1 ~]#
2. Now to start the telnet service even after reboot execute one of the below task.
a. vi /etc/xinetd.d/telnet
make disable=no
b. chkconfig xinetd on
3. Restart the telnet service.
[root@kalwa1 ~]# service xinetd restart Stopping xinetd: [ OK ] Starting xinetd: [ OK ] [root@kalwa1 ~]#
Now your telnet server is running.
4. Now perform a double check use following command.
[root@kalwa1 xinetd.d]# lsof -i:23 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME xinetd 3113 root 5u IPv6 15482 0t0 TCP *:telnet (LISTEN) [root@kalwa1 xinetd.d]#
You can see that word Listen at the end which is important.
5. Connect from other system or from the same server for final testing.
[root@kalwa1 xinetd.d]# telnet 192.168.216.130 Trying 192.168.216.130... Connected to 192.168.216.130. Escape character is '^]'. Red Hat Enterprise Linux Server release 6.2 (Santiago) Kernel 2.6.32-220.el6.x86_64 on an x86_64 01:11 on Sunday, 28 June 2015 login:
That’s it we have configure telnet service successfully.
For more details follow: http://www.cyberciti.biz/faq/how-do-i-turn-on-telnet-service-on-for-a-linuxfreebsd-system/