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5
5.   Manage the Firewall and Secure 
Your Network
This chapter describes how to use the basic firewall features of the cable data gateway to 
prevent objectionable content from reaching the computers and other devices connected to your 
network. 
This chapter includes the following sections:
• Block Keywords and Domains for HTTP Traffic
• Block Access to Services and Applications
• Schedule When Features Are Active
• Set Up Security Event Email Notification
• Manage Firewall, Web, and NAT ALG Security
Note: For information about parental controls, which is another security 
feature, see Set Up Parental Controls on page  29.