UTM Services
Maintaining an effective defense against the various threats originating from the Internet requires
that all three databases used by the NetDefend UTM Firewalls are kept up-to-date. In order to
provide a robust defense, D-Link offers optional NetDefend Firewall UTM Service subscriptions
which include updates for each aspect of defense: Intrusion Prevention Systems (IPS), Antivirus
and Web Content Filtering (WCF). NetDefend UTM Subscriptions ensure that each of the firewall’s
service databases are complete and effective.
Robust Intrusion Prevention
The NetDefend UTM Firewalls employ component-based signatures, a unique IPS technology
which recognizes and protects against all varieties of known and unknown attacks. This
system can address all critical aspects of an attack or potential attack including payload, NOP
sled, infection, and exploits. In terms of signature coverage, the IPS database includes attack
information and data from a global attack sensor-grid and exploits collected from public sites such
as the National Vulnerability Database and Bugtrax. The NetDefend UTM Firewalls constantly
create and optimize NetDefend signatures via the D-Link Auto-Signature Sensor System without
overloading existing security appliances. These signatures ensure a high ratio of detection
accuracy and a low ratio of false positives.
Stream-Based Virus Scanning
The NetDefend UTM Firewalls examine files of any size, using a stream-based virus scanning
technology which eliminates the need to cache incoming files. This zero-cache scanning method
not only increases inspection performance but also reduces network bottlenecks. NetDefend UTM
firewalls use virus signatures from Kaspersky Labs to provide systems with reliable and accurate
antivirus protection, as well as prompt signature updates. Consequentially, viruses and malware
can be effectively blocked before they reach the network’s desktops or mobile devices.
Web Content Filtering
Web Content Filtering helps administrators monitor, manage, and control employee usage of and
access to the Internet. The NetDefend UTM Firewalls implement multiple global index servers
with millions of URLs and real-time website data to enhance performance capacity and maximize
service availability. These firewalls use highly granular policies and explicit black/white lists
to control access to certain types of websites for any combination of users, interfaces and IP
networks. The firewall can actively handle Internet content by stripping potential malicious
objects, such as Java Applets, JavaScripts/VBScripts, ActiveX objects, and cookies.
NetDefend UTM Subscription
The standard NetDefend UTM Subscription provides your firewall with UTM service updates
for 12 months* starting from the day you activate or extend your service. The NetDefend UTM
Subscription can be renewed regularly to provide your firewalls with the most up-to-date security
service available from D-Link.

Specs