This is an appliance that, equipped with the appropriate software, can ward off certain threats. If the security appliance is equipped in such a way that it is only designed for a specific threat and performs a task within an overall system, it is referred to as a Specialized Security Appliance( SSA). In contrast, the Unified Threat Management Appliance( UTMA) handles all security solutions that can be caused by a wide variety of threats.
Security appliances can perform the functions of firewalls and VPN gateways, virus scannersURL filters and content filters, IDS systems and IPS systems. They are equipped with high- performance processors, memory of several hundred megabytes or even several gigabytes, hard disks, IDE controllers, Ethernet interfaces and USB interfaces.