Unified Threat Management (UTM) stands for complete protection. UTM systems filter incoming and outgoing network traffic, detect and prevent attacks, and block and quarantine viruses. If an appliance takes care of all these tasks, it needs to meet the customer’s individual requirements precisely.
The UTM Firewall by Endian, a company founded in 2003, is one of the few open source firewalls available in both free and commercial versions. According to the manufacturer, more than 4,000 customers deploy Endian Firewall Enterprise, and more than 1.2 million users have downloaded the community edition. Both are based on the IPCop Linux distribution.
Although the free community variant is available for unrestricted free use in the enterprise, it lacks many of the features of the Enterprise Edition. Only the commercial version offers hardware appliances, virtual network drivers, professional support, a hotspot feature, and commercial-grade spam and content filtering. However, the community edition does provide the basic UTM functions, including antivirus, anti-spam, URL filtering, IPsec, and OpenVPN. It even protects larger networks easily. The ISO image of the community edition is available online. If you want to test the Enterprise version, you can request a test key and the download link from the website.
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