3Com 3CRWE50194 - Home Wireless Gateway User Manual - page 39
5 Advanced Features and System Tools
31
Firewall
The firewall feature of the home wireless gateway provides a level of Internet
security on the cable/DSL port by providing a defense system for your home
network against hackers. The firewall, which is always on, looks for known
data patterns used by hackers and prevents them from harming your network.
Updates are available online to detect and block out new hacker patterns.
Selecting Firewall from the Advanced Settings portion of the Options menu in
the Setup screen displays the Advanced Settings | Firewall screen (Figure 17).
By selecting YES (default), you enable the firewall’s monitoring and logging
features.
If you select NO, the monitoring and logging features are disabled, however,
the firewall remains active.
Figure 17 Advanced Settings | Firewall Screen
NOTE: If you have an external firewall as part of your home network, you
may experience performance degradation due to the fact that the data
from the Internet is being screened twice, once by the external firewall
and again by the gateway’s firewall.