If successful, you should see the telnet server running on port 23 (or whichever port you chose, if you configured something different above). # Do not allow access from these two IPsĪccess_times = 8:00-9:00 20:00-21:00 # Only allow access during these two time windowsįinally, use the following command to start the telnet server: # unencrypted username/password pairs for authentication.Īnd for extra security you can add these lines as you like: # description: The telnet server serves telnet sessions it uses

If you’d like to update the default configuration, edit /etc/xinetd.d/telnet and add the following: You can change telnet port number by editing /etc/services with this line: # Please note that you need a log_type line to be able to use log_on_success # Some defaults, and include /etc/xinetd.d/ And, again, unless you’ve modified this file, it will be pretty empty.Īdd the following lines to the end of the file and save it. Again, using your favorite editor and with root permission, open up /etc/nf. Next, we’ll need to configure the xinetd service. telnet stream tcp nowait telnetd /usr/sbin/tcpd /usr/sbin/in.telnetd Unless you’ve modified this file, it will probably not exist or be pretty empty.Īdd the following line to the end of the file and save it. Using your favorite editor and with root permission, open up /etc/nf.

We’ll need to configure the inetd configuration. However, you can enable Telnet for testing purposes or for legacy scripts.įirst, install the necessary packages. By default, Telnet server is disabled for security purposes in favor of SSH.

Setup telnet server ubuntu