Yes, that's one of its better features... and there is plenty of info on 8Signs in the archives: http://www.wilderssecurity.com/search.php?searchid=3231076
Do a search of this forum using the term 8 signs firewall. https://www.wilderssecurity.com/showthread.php?t=221036 https://www.wilderssecurity.com/showthread.php?t=182277 https://www.wilderssecurity.com/showthread.php?t=145546