SMC Networks Barricade SMC7004ABR - Manual (Page 18)

A
PPLICATIONS
1-4
• User-Definable Application Sensing Tunnel
You can define special applications that require multiple
connections such as Internet gaming, videoconferencing, and
Internet telephony. The Barricade can then sense the
application type and open a multi-port tunnel for it.
• DMZ Host Support
Allows a networked computer to be fully exposed to the
Internet. This function is used when the special application
sensing tunnel feature is insufficient to allow an application to
function correctly.
• Security
The Barricade supports security features that can deny Internet
access to specified users, or filter all requests for specific
services the administrator does not want to serve. The
Barricade’s firewall can also block common hacker attacks,
including IP Spoofing, Land Attack, Ping of Death, IP with
zero length, Smurf Attack, UDP port loopback, Snork Attack,
TCP null scan, and TCP SYN flooding.
• Virtual Private Network
The Barricade supports three of the most commonly used VPN
protocols – PPTP, L2TP and IPSec. These protocols allow
remote users to establish a secure connection to their
corporate network. If your service provider supports VPNs,
then any of these protocols can be used to create an
authenticated and encrypted tunnel for passing secure data
over the Internet (i.e., a traditionally shared data network).
The VPN protocols supported by the Barricade are briefly
described below.