NetDefendOS supports features such as Virtual LANs, Route
Monitoring, Proxy ARP and Transparency.
For more information about this, see Chapter 4, Routing.
Firewalling Policies NetDefendOS provides stateful inspection-based firewalling
for a wide range of protocols such as TCP, UDP and ICMP.
The administrator can define detailed firewalling policies
based on source/destination network/interface, protocol,
ports, user credentials, time-of-day and more.
Section 3.6, “IP Rules and IP Policies” describes how to set up
these policies to determine what traffic is allowed or
rejected by NetDefendOS.
Address Translation For functionality as well as security reasons, NetDefendOS
supports policy-based address translation. Dynamic
Address Translation (NAT) as well as Static Address
Translation (SAT) is supported, and resolves most types of
address translation needs.
This feature is covered in Chapter 7, Address Translation.
VPN NetDefendOS supports a range of Virtual Private Network
(VPN) solutions. Support exists for IPsec, L2TP, L2TPv3,
PPTP, as well as SSL VPN, with security policies definable for
individual VPN connections.
This topic is covered in Chapter 9, VPN.
TLS Termination NetDefendOS supports TLS termination so that the
NetDefend Firewall can act as the endpoint for connections
by HTTP web-browser clients (this feature is sometimes
called SSL termination).
For detailed information, see Section 6.2.11, “The TLS ALG”.
Application Control NetDefendOS is able to identify data connections relating
to particular applications and perform defined actions for
those data streams such as blocking or traffic shaping. An
example of an application is BitTorrent peer to peer
streaming but could also relate to accessing certain
websites such as Facebook.
For detailed information, see Section 3.7, “Application
Control”.
Anti-Virus Scanning NetDefendOS features integrated anti-virus functionality.
Traffic passing through the NetDefend Firewall can be
subjected to in-depth scanning for viruses, and virus
sending hosts can be black-listed and blocked.
For details of this feature, seeSection 6.5, “Anti-Virus
Scanning”.
Intrusion Detection and
Prevention
To mitigate application-layer attacks towards vulnerabilities
in services and applications, NetDefendOS provides a
powerful Intrusion Detection and Prevention (IDP) engine.
The IDP engine is policy-based and is able to perform
high-performance scanning and detection of attacks and
can perform blocking and optional black-listing of attacking
hosts.
Chapter 1: NetDefendOS Overview
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