How to restrict SSH login?

Zyxel_Jeff Posts: 1,099  Zyxel Employee
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Question :

There are many internet suspicious attacks on the internet including unauthorized SSH login. This article will guide how to prevent it.

Answer :

You can add a a security policy to enable remote SSH access to your firewall from specific IP addresses (such as WAN IP, Geo-IP, etc.), as shown below:

Once a successful SSH login to the device occurs, you will find the corresponding log messages below:

If an unauthorized IP address is used for SSH access to the firewall, the traffic will be blocked by the default rule.