Firewalk X 2 2.3,7
This Mac OS X firewall provides application connection restricting and real time alerts.
It also offers TCP, UDP, and ICMP packet filtering, time expiring firewall rules, user and IP specific rules, event logging, Unicode support and port scan and packet flood detection. It allows automatic settings changes for different network locations and includes localizations for English, French and German.
Mac OS X 10.1 or later