What exactly is an UTM?

The term Unified threat management (UTM) has been coined by Charles Kolodgy of International Data Corporation (IDC) in 2004. The philosophy of a UTM is to defend your network from all threats caused via data transfer via the Internet. In the most basic form, Unified Threat Management (UTM) is a

firewall, VPN, IDP and anti-virus working together against any known threat or in the case of heuristics, unknown threats.

Unified Threat Management in detail

Firewall:

Stateful Inspection
VOIP-Support (SIP, RTP)
Connection tracking
Malformed/Unclean Packet Filter
Denial-of-Service Protection
Graphical network matrix

VPN:

IPSec mit X.509 oder PSK
SSL-VPN
PPtP
L2TP
DynVPN
CA for PKI VPN
Assistant
Certificate management and CRL Management

Filtering:

Virus protection for E-Mail and Web
Web Blocker URL Filtering
Black/Whitelist URL Filtering
Anti-Phishing
Keyword Content Filtering
Active Content Filter
Extended E-Mail Filter
Application Proxy HTTP, SMTP, DNS, NTP, SOCKS

SPAM:

Live Spam Protection
E-Mail Greylisting
Razor-Check
SPF Check Definable White and Blacklists
Trainable Bayes Filter
DNS Blacklists
Image Filter and PDF Filter

Networking:

Multi-WAN (redundant Internet access)
Link and Interface Failover
Time managed Restart of dynamic connections
Traffic shaping
Tagged VLAN
DMZ Support
Bridging
NAT/Masquerading/Port-Forwarding
MAC Address supervision / monitoring

IDS/IPS

Intrusion Detection
Intrusion Prevention
Dynamic Blocking
Powerful, proactive protection
Standalone IDS competence in Stealth Mode

Server Management

Active system monitoring real-time
Configuration report
Live log
Firewall report
Incidence log
Event monitor
Graphical system statistics
Secure, flexible logging
Diagnostics tools

Simply Configuration Setup

Central user and group management
Network and Host management
Assistants
Remote administration HTTPS
Dynamic online help
Update management for system, virus,
spam and URL filters
Authentification via Active Directory, NT Domains or NTLM
LDAP, LDAP Proxy, LDAP Reply or Kerberos
Delegable administration
Flexible configuration management
Integrated data security and recovery
USV support