GTA 1615

GTA就是侠盗猎车手，这个说明是侠盗猎车手1615，是其中的一个版本。

Global Technology Associates, Inc. (GTA) is a privately owned US corporation and developer of Internet firewalls since 1994. The GNAT Box Firewall Software was one of the first firewalls certified by the NCSA (now ICSA). Today, our full-featured firewalls offer one of the best price/performance ratios in the industry.

Solid and innovative engineering, quality customer service and a global perspective make GTA a leader in delivering technologically advanced, yet cost effective network security solutions.