port 22

SSH is a powerful for administration of you Linux computer. However that makes the SSH services a target for hackers.

Port 22 is the commonly used and targeted port for SSH services. I change SSH to use a non-standard port to throw off the lazy hackers.

Alexander Sandler: "So first thing that we will learn about tcpdump is how to filter out SSH and telnet packets...for now just remember this syntax:
# tcpdump not port 22"

System administrators whose boxes are running on Linux have recently reported a massive wave of attacks on the famous SSH port (also known as Port 22).

SSH attacks are quite common if you are running SSH on Port 22. Most automated robots try to login as root with various brute force and dictionary combinations to get access to your server.

The following easy steps can help you to harden SSH running on your server.

My work computer is behind a firewall that only allows connections to port 22. Even if it wasn't behind a firewall, since the documents may be sensitive, I would rather not transfer anything without encryption.

I want to mount my user directory of my work computer to my laptop wherever I might be. This is relatively easy with .Mac and Back to My Mac in Leopard.

If you don't have .Mac and Leopard, however, here is how to do it with one click without spending any money.