Mod-security is a (third party) module of Apache (recently Microsoft IIS and NGINX) offering intrusion detection and (some kind of) prevention for web applications, acting as a web application firewall.…
If you want to access via the internet a computer which is behind a NAT router and it has not direct access to the internet, you need a VPN solution.…
Psad (Port Scan Attack Detector) is an intrusion prevention software, written in Perl by Michael Rash. Psad makes use of iptables and ip6tables log messages to detect, alert, and (optionally)…
Fail2Ban (authentication failure monitor) is an intrusion prevention software, written in Python. Fail2Ban analyzes various services log files (ssh, apache, postfix etc) and if it detects possible attacks (mainly Brute-force…
One of the biggest advantages of Debian is the easy and mostly safe upgrade. It is extremely rare a Debian server to be "broken" after applying updates. To update a…
