(Unified Threat Management) A stand-alone appliance or software that combines a firewall, antivirus, spam and content filtering as well as intrusion detection. See firewall, antivirus, antispam and IDS.
A UTM Appliance
Sophos XG firewall/UTM appliances can replace the router in many instances. This XG 750 model provides 140 Gbps of throughput and optical support (see SFP), and it interacts with the Sophos antivirus software in the users' machines. (Image courtesy of Sophos Ltd., www.sophos.com)