NETGEAR CVG834G, Reference Manual

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Wireless Cable Voice Gateway Model CVG834G Reference Manual
3-8 Protecting Your Network
v2.0, November 2007
To delete a device from the Trusted Devices table:
1. Select the MAC address of the PC from the Trusted Devices table.
2. Click Delete to delete the entry.
3. Click Apply to activate the settings.
Inbound and Outbound Rules
You can use firewall rules to block or allow specific traffic passing through from one side to the
other. Inbound rules (WAN to LAN) restrict access by outsiders to private resources, selectively
allowing only specific outside users to access specific resources. Outbound rules (LAN to WAN)
determine what outside resources local users can have access to.
A firewall has two default rules, one for inbound traffic and one for outbound. The default rules of
the gateway are:
• Inbound: Block all access from outside except responses to requests from the LAN side.
Instructions for setting up inbound rules can be found in “Port Forwarding” on page 3-10
• Outbound: Allow all access from the LAN side to the outside. Use Port Blocking to set up
outbound rules (see “Enabling or Disabling Content Filtering Services” on page 3-5 ).
You may define more rules that specify exceptions to the default rules. By adding custom rules,
you can block or allow access based on the service or application, source or destination IP
addresses, and time of day.
Port Blocking
You can use Port Blocking to block outbound traffic on specific ports.