firewall

zoro can help you expose local server to external network. Support both TCP/UDP, of course support HTTP. Zero-Configuration.

curated list of open-source anti-censorship tools

Single Packet Authorization > Port Knocking

pfSense/OPNsense + Elastic Stack

A docker sidecar container to forward all traffic to local docker host or any other host

An execution engine for Wireshark-like filters

Tunnel TCP connections through a file

NPS Enhanced — Lightweight intranet tunneling and reverse proxy with Web UI | NPS 内网穿透 反向代理 增强版 全修 新版 二开

Stateful zone based firewall daemon with D-Bus interface

The fast and secure Load Balancer / API Gateway / Reverse Proxy with built-in service discovery, GeoIP, WAF, bot protection and much more - https://pingoo.io

Web Application Firewall (WAF) package for Laravel

HTTP(s) request filter for processes

A firewall that utilizes the Linux kernel's XDP hook. The XDP hook allows for very fast network processing on Linux systems. This is great for dropping malicious traffic from a (D)DoS attack. IPv6 is supported with this firewall! I hope this helps network engineers/programmers interested in utilizing XDP!

evilwaf is a penetration testing tool designed to detect and bypass common Web Application Firewalls (WAFs).

Fail2ban Docker image

IP lists full of bad IPs - Updated every 2H

aawaf 是一款基于语义分析的Web应用防火墙

Simple Wireguard 2FA

Orchid: VPN, Personal Firewall

Athena is a Material You (Material 3) firewall and ad blocker that works seamlessly on both rooted and non-rooted devices.

:vertical_traffic_light:Web Application Firewall or API Gateway(应用防火墙/API网关)

Fast and light-weight API proxy firewall for request and response validation by OpenAPI specs.

Casbin AI & MCP security gateway for HTTP, online demo: https://door.caswaf.com

WireGuard Guide. Learn all about WireGuard for Networking and in the Cloud (Microsoft Azure, AWS, and Google Cloud).

A Go implementation of ICE

Data-Shield IPv4 Blocklist Community provides an official, curated registry of IPv4 addresses identified as malicious. Updated continuously, this resource offers vital threat intelligence to bolster your Firewall and WAF instances,...

Ansible Role - iptables Firewall configuration.

A p2p reverse proxy with NAT traversal. Inspired by frp, rathole and ngrok

Aggregated AbuseIPDB blocklists with worst IPv4 & IPv6 offenders (~99% confidence)

User-friendly and versatile geoblocker for Linux