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How to Disable Telnet access on server?

1. Login to your server as a root user.

 

2. Edit the file as follows:

# vi /etc/xinetd.d/telnet

 

3. Look for the line: disable = no and replace with disable = yes

 

4. Now restart the inetd service:

#/etc/rc.d/init.d/xinetd restart

 

5. Turn off it through chkconfig as well because it can still start through that.

#/sbin/chkconfig telnet off

 

6. Scan your server to ensure port 23 is closed.

#nmap -sT -O localhost

 

Also run ps -aux | grep telnet and if you find anything other than “grep telnet” as result ,then in that case kill that process.

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Managed Services
at Hivelocity

Bare Metal Shouldn’t be a Grind
Let Hivelocity take the busy work out of your daily server maintenance with our Managed Services plans. Choose from 1 of 6 different managed service offerings. Standard and Premium plans available.

Questions about something specific? Chat now with one of our expert account managers and learn which plan is right for you and your customers!

With Managed Server Technicians on-site 24/7/365, your server is always in good hands.