ZyXEL Communications ZyWALL5UTM 4.0 User Manual

Page of 803
ZyWALL 5/35/70 Series User’s Guide
Chapter 1 Getting to Know Your ZyWALL
54
Content Filtering
The ZyWALL can block web features such as ActiveX controls, Java applets and cookies, as 
well as disable web proxies. The ZyWALL can block or allow access to web sites that you 
specify. The ZyWALL can also block access to web sites containing keywords that you 
specify. You can define time periods and days during which content filtering is enabled and 
include or exclude a range of users on the LAN from content filtering.
You can also subscribe to category-based content filtering that allows your ZyWALL to check 
web sites against an external database of dynamically updated ratings of millions of web sites.
Anti-Spam
The ZyWALL’s anti-spam feature helps detect and mark or discard junk e-mail (spam). The 
ZyWALL has a whitelist for identifying legitimate e-mail and a blacklist for identifying spam 
email. You can also subscribe to an anti-spam external database service that checks e-mail 
against more than a million know spam patterns.
Anti-Virus Scanner
With the anti-virus packet scanner, your ZyWALL scans files transmitting through the enabled 
interfaces into the network. The ZyWALL helps stop threats at the network edge before they 
reach the local host computers.
Intrusion Detection and Prevention (IDP)
IDP can detect and take actions on malicious or suspicious packets and traffic flows.
ZyWALL Turbo Card 
ZyWALL Turbo Card is a co-processor accelerator that is used in conjunction with your 
ZyWALL for fast, efficient IDP (Intrusion Detection and Prevention) and AV (Anti Virus) 
traffic inspection.
Universal Plug and Play (UPnP) 
Using the standard TCP/IP protocol, the ZyWALL and other UPnP-enabled devices can 
dynamically join a network, obtain an IP address and convey its capabilities to other devices 
on the network.
RADIUS (RFC2138, 2139)
RADIUS (Remote Authentication Dial In User Service) server enables user authentication, 
authorization and accounting.