today's howtos
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How to Install Fail2ban on Ubuntu 22.04
Fail2ban is a free and open-source IPS that helps administrators safeguard Linux servers against brute-force assaults. Python-based Fail2ban has filters for Apache2, SSH, FTP, etc. Fail2ban blocks the IP addresses of fraudulent login attempts.
Fail2ban scans service log files (e.g. /var/log/auth.log) and bans IP addresses that reveal fraudulent login attempts, such as too many wrong passwords, seeking vulnerabilities, etc. Fail2ban supports iptables, ufw, and firewalld. Set up email alerts for blocked login attempts.
In this guide, we’ll install and configure Fail2ban to secure Ubuntu 22.04. This article provides fail2ban-client commands for administering Fail2ban service and prisons.
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How to install software packages on Red Hat Enterprise Linux (RHEL) | Enable Sysadmin
There's a lot of flexibility in how you install an application on Linux. It's partly up to the software's developer to decide how to deliver it to you. In many cases, there's more than one "right" way to install something.
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What is the /etc/hosts file in Linux – TecAdmin
/etc/hosts is a text file on a computer that maps hostnames to IP addresses. It is used for static name resolution, which is not updated automatically like the Domain Name System (DNS) records.
/etc/hosts are usually the first file checked when resolving a domain name, so it can be used to block websites or redirect users to different websites.
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