SSH server

Step 1

Open the /etc/hosts.allow file in order to add a new entry.

Step 2

Enter your GoodAccess gateway's Static IP address. Below you will find an example of two permitted IP addresses.

sshd: 21.22.23.24/32, 33.34.35.36/32

Step 3

Be sure that you've entered the correct IP address to any issues with connectivity and then save the file.

Step 4

Now let's block access from all other sources apart from the defined ones. To do so, edit the /etc/hosts.deny by adding the following entry and save your changes.

sshd: ALL

Step 5

Test the access with and without being connected with the GoodAccess Client App to be sure that the SSH access is protected.

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Note: There are several other ways to restrict access to SSH servers like IPTABLES firewall (restrict the access to TCP port 22) or SSH daemon config.