ZyXEL Communications ZyXEL ZyWALL IDP 10 - Manual (Page 53)

ZyWALL IDP 10 User’s Guide
IDP Policies 6-7
Figure 6-7 Worm/Virus Signatures
6.3.8 Backdoor/Trojan
A backdoor (also called a trapdoor) is hidden software or a hardware mechanism that can be triggered
to gain access to a program, online service or an entire computer system. A Trojan horse is a harmful
program that s hidden inside apparently harmless programs or data.
To find a list of all backdoor/Trojan related signatures supported by the ZyWALL, do a policy search
by name or policy query by type (Backdoor/Trojan). The following screen shows some of the
backdoor/Trojan related signatures supported by the ZyWALL at the time of writing.