How to change the password of a Linux user
Summary To change the password of a Linux user, do this: passwd That will change the currently logged in user’s password. To change the password
linux-security
How to use Fail2ban to block errand 404s on a WordPress/Apache website
About Fail2ban blocking 404s for Apache websites These days hackers scan your website for any known vulnerability. For example, they might run scripts that track
How to see a list of Fail2ban IPs
About Fail2ban IP blocking Fail2ban is fantastic Linux security software that blocks multiple authentication failures on a Linux host. The beauty of this software is
How to protect a Linux system from brute force attacks
The most common type of attack on Linux servers are performed by script kiddies. They have computers running that continuously scans the internet to find
ssh_dispatch_run_fatal: Connection to x.x.x.x port 22: DH GEX group out of range
You’re trying to SSH to a Zyxel switch and get the following message: user@hostname ~ $ ssh [email protected] -p 22 ssh_dispatch_run_fatal: Connection to x.x.x.x port
How to avoid having to retype a password repeatedly using ssh-keygen and ssh-copy-id
You are tired of using SSH and having to repeatedly type passwords. This slowing down your workflow, especially as you are working on multiple servers.