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troubleshooting Question

Blocking telnet on open ports through Cisco ASA firewall

Avatar of Meru_IT
Meru_IT asked on
Hardware FirewallsSSH / Telnet SoftwareCisco
5 Comments1 Solution1325 ViewsLast Modified:
Hi, I have a Cisco ASA 5520 firewall and I have opened some TCP ports on it so that clients can connect to some internal servers on these ports. Now I would not want telnet on these open ports to work from outside. For example, if someone wants to telnet on port 80 of my webserver public IP from Internet, it should not connect but I should be able to browse my website from outside using a standard browser.
Please note, I have mentioned port 80 as an example. There are non-standard ports also (>2048) which are open for outside to inside traffic on some servers and I want only the client applcations to connect on these ports.

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