SnapGear 2.0.1 - Manual (Page 85)

Firewall
81
Access Control and Content Filtering
Inappropriate Internet use during work hours can have a serious effect on productivity.
With the CyberGuard SG Access Control web proxy, you can control access to the
Internet based on the type of web content being accessed (Content), and which user or
workstation is accessing the Internet content (Require user authentication, IP Lists).
Additionally, you can set up global block/allow lists for web sites that you always want to
be accessible/inaccessible (Web Lists), or force users to have a personal firewall
installed before accessing the Internet (ZoneAlarm).
To enable any of these access controls or content filtering, select Access Control, then
under the Main tab check Enabled and click Apply.
User authentication
Check Require user authentication if you want to require users to authenticate
themselves before browsing the web. When attempting to access a web site on the
Internet, their browser will display a dialog similar to the following:
Figure 6-7
Web proxy user accounts are added and removed through Users under the System
menu. Web proxy users should generally have only Internet Access (via. Access
Controls) checked, with all other access permissions unchecked. See the Users section
in the chapter entitled Advanced for further details on adding user accounts.