http://www.nestor.minsk.by/sr/2006/02/sr60206.html
https://toster.ru/q/29447
http://xgu.ru/wiki/Linux_Bridge
http://sourceforge.net/p/bridger/wiki/GUI%20Bridge%20Creator%20for%20Linux/
http://www.linux.ru/10-spetsializirovannykh-linux-distributivov-kotorye-uprostyat-zhizn-sistemnym-administratoram
http://xakep.ru/51525/
http://www.zeroshell.org/
http://www.untangle.com/
http://www.zentyal.org/
http://www.zentyal.com/
http://www.asterisk.org/
http://www.sophos.com/en-us/products/unified-threat-management.aspx
http://www.brocade.com/index.page
http://www.clearfoundation.com/Software/overview.html
http://ubuntustudio.org/
http://www.untangle.com/
http://www.smoothwall.org/
http://www.ipcop.org/
http://en.wikipedia.org/wiki/List_of_router_and_firewall_distributions
и еще немного нового
http://www.tmeter.ru/
http://www.hub.ru/forum/index.php?showtopic=11092
http://www.youngzsoft.net/ccproxy/proxy-server-download.htm
==
https://www.webhtb.ro/how-to/details/q/1/
http://wiki.opentrafficshaper.org/download