Unified Threat Management (UTM) is a comprehensive solution that has gained widespread currency as a primary network gateway defense solution for organizations.
In theory, it is the evolution of the traditional firewall into an all-inclusive security product that has the ability to perform multiple security functions in one single appliance: network firewalling, network intrusion prevention and gateway antivirus (AV), gateway anti-spam, VPN, content filtering, load balancing and on-appliance reporting.
The term UTM was originally coined by IDC, a leading market research firm.
The advantages of unified security lies in the fact that rather than administering multiple systems that individually handle anti virus, content filtering, intrusion prevention and spam filtering functions, organizations now have the flexibility to deploy a single UTM appliance that takes over all their functionality into a single rack mountable network appliance.