IP list full of bad IPs

List of IP addresses which attacked my mailservers in the last 30 days

List of IP addresses which attacked my SIP IP PBX in the last 30 days

Update Hetzner Cloud firewall rules with current Cloudflare IP ranges

Murus (pf) and Vallum (afw?) configurations layered with Cisco Umbrella and Firehol. Test it and let me know what you thin! It's free for all!

Firewall-System based on OpenWRT or Pi-Hole with UnBound, TOR, optional Privoxy, opt. ntopng and opt. Configuration of the AVM FRITZ!Box with Presets for Security and Port-List. Please visit:

Ansible role for hardening Linux

Various Projects on System's Security Course on TUC year 2021

Terraform module to provision Route 53 Resolver DNS Firewall, firewall rules and rule groups

Terraform module to provision and manage AWS Network Firewall resources

A declarative module for iptables

This package adds protection against ddos attacks by returning a very small page resource. Since it returns a very small html resource, it is not affected by the attack. Compatible with Express.

Real-time threat detection for any Linux system running firewalld, based on data from the Turris Sentinel project

Application allows to block Internet access to other applications / Приложение позволяет заблокировать доступ в интернет другим приложения

simple script to configure iptables firewall

Client for FRC Backend

API Backend to document basic L3/L4-firewallpolicies

Convenient way to block countries by IP with ipset, iprange and iptables. Only couple iptables rules are added, which is easily revertable. Run services to keep geoblock persistent

A simple python script for a firewall rule that blocks incoming requests based on the Spring4Shell (CVE-2022-22965) vulnerability

Ansible Role to provision UFW