telnet port 23

Linux and Unix-Like Red Hat
1

My linux version is 2.6.18-194.e14 (Oracle enterprise linux).

Could you please tell me how to enable telnet on the server.
When I try to connect the server through another pc using telnet it is throwing error.

Connecting To <ip address>...Could not open connection to the host, on port 23.

So I edit the /etc/sysconfig/iptables and add a line like this.

-A RH-FIrewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 23 -j ACCEPT.

And restarted the iptables service. But still the port is not open yet(lsof -i -n -P doesn't show the port as open).

Thank you for your help.

2

Telnet runs as a xinetd service in Linux 2.6* kernels. Please find the file /etc/xinet.d/krb5-telnet

In the file you would find that telnet is disabled by default.

change

                  disable   no

then

service xinetd restart

chkconfig telnet on

chkconfig --list|grep telnet

Please be informed that telnet is unsecure and that is the reason it is disabled by default.Using ssh would be more viable.

Syed

3

Another vote for disable telnet and use SSH as nature intended.

4

Thank you guys.