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Community Member

Closing Telnet Port

I need to know how to close the telnet port in my router. Thanks.

3 REPLIES
Community Member

Re: Closing Telnet Port

Here is a link describing the transport input command as well as other ways to secure your router.

http://www.cisco.com/warp/public/707/21.html#general

Hope this helps...

Cisco Employee

Re: Closing Telnet Port

configure "login" and "no password" under line vty 0 4

eg;

line vty 0 4

login

no password

R/Yusuf

Community Member

Re: Closing Telnet Port

Hi,

Yes you can do that also, but if someone port scans you, port 23 still will show as being open. To disable that port from showing up in port scans, you enter the command “transport input none” in your line vty 0 4 config.

Just good information to know…..

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