UTM Stands for Unified Threat Management. A UTM is a device that handles the security of your network. In many cases it includes firewall, antivirus, intrusion prevention, spyware / malware protection, as well as content filtering. A UTM is installed in place of a stand alone firewall and is able to filter network traffic before it reaches computers or servers on your network. This can be a huge benefit as antivirus and firewall software can fail or get uninstalled on individual computers.