Open Door Networks Inc. has returned to the Mac with
DoorStop X, firewall software designed to work for Mac OS X v10.3 and v10.4. The firewall software offers capabilities lacking in Mac OS X’s built-in firewall support, according to the developer, such as logging all access attempts and selective access features. It’s being released as a public beta version that will expire in July. Open Door plans to have a shipping version ready by then, although pricing hasn’t been announced.
By default, once you install DoorStop X, all service-level access attempts from the Internet to your Mac are blocked and logged. You can selectively allow access to services on your Mac. What’s more, DoorStop X allows you to specify individual machines to allow or deny service to, on a service-by-service basis. You can also optionally block and log low-level User Datagram Protocol (UDP) access attempts.
Open Door Networks previously made the original DoorStop application in 1998, which ran on “Classic” Mac operating systems from Mac OS 8.1 to 9.2. This new version has been completely rewritten for Mac OS X, according to the company.