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$300 Free Credits to Build on Google Cloud
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Free UTM appliance: firewall, VPN, WAF and antivirus in one ISO.
...A fully custom network appliance operating system built from scratch over 20 years, now fully open source.
One ISO includes: firewall, VPN, web antivirus, URL filtering, SSL inspection, WAF, reverse proxy, load balancer and QoS.
Free for any number of users. Optional paid support available.
Source code: https://github.com/cacheguard/CacheGuard-OS
Website: https://www.cacheguard.com/
This product is no longer maintained:
The author created alternative tools: https://databunker.org/ and https://privacybunker.io/
GreenSQL is a database firewall engine used to protect Open Source Databases from SQL injection attacks. It works in proxy mode. Application logic is based on evaluating of SQL commands using risk score factors, as well as blocking of sensitive commands
Archangel is meant to be a sort of 'improved' version of dansguardian and uses the same default lists as dansguardian. It is basically dansguardian rewritten in python as an ICAP server as opposed to a proxy front-end. The benefits of archangel over dansguardian include:
1. Because it is an ICAP filter, it interfaces with squid and can do HTTPS filtering as well as regular HTTP.
2. Because it uses blocking modules and is written in python, it is extremely easy to write new modules for very complex, intensive blocking. I have already written a module that does content-based blocking of youtube videos.
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