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/
...The software has been designed for the best usability: very easy to install, use and manage and still greatly flexible.
The feature suite includes stateful packet inspection firewall, application-level proxy HTTP with antivirus support, content filtering of Web traffic and a "hassle free" VPN solution (based on both OpenVPN, IPsec and Wireguard)
...As no proxy server is involved, jkaptive has no performance penalty, nor does it create problems with non-http traffic. Once the token is accepted, jkaptive is out of the way of any network packets completely.
For presenting the login page, jkaptive has a built-in webserver, so no additional webserver application is needed.
JavaTunnel is a java, free, tunneling program.
It can function in two ways: 1 It can open TCP/IP tunnel between two computers, using HTTP as a transport(not yet). 2 It can open a connection directly, witht he help of a SSL-HTTP proxy(avaible now).
LanBiz is a free, Open Source Server Suite, mostly fitted for SOHO (Small Office/Home Office) environments. The final LanBiz will include: an internet gateway/firewall, proxy, mail, file/print, fax/telephony server and more!