Above is a typical application of certificate. In the picture, Koal Enterprise CA System together with Koal SSL security authentication gateway, Koal NTC and Koal desktop security pieces provides security guarantee for medium and small-sized enterprises:

　　Koal Enterprise CA System provides enterprises with the services of certificate issuing and information release of certificate abolishment. Administrator issues certificate to the employees through CA management user terminal.

　　sing the certificates issued by Koal Enterprise CA System, Koal NTC establishes a security communication path between company and its branches. Thus, the employees in the branches can use company's public services such us document server safely just like they use locoal services, and vice versa.

　　Koal SSL security authentication gateway protects Web servers(such as OA server) through certificates. Only the employees who have valid certificates will be admitted to the Web server. Meanwhile, a 128-bit encryption communication channel is established between SSL security authentication gateway and the clients to guarantee the information security.