Reference Manual for the Model DG824M Wireless ADSL Modem Gateway
Protecting Your Network 4-5
6. Click Apply to save your settings.
Rules
Firewall rules are used to block or allow specific traffic passing through from one side to the other.
Inbound rules (WAN to LAN) restrict access by outside rs to private re sources, sele ctively allo wing
only specific outside users to access specific resources. Out bound 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 defa ult ru le s of
the DG824M are:
• Inbound: Block all access from outside except responses to requests from the LAN side.
• Outbound: Allow all access from the LAN side to the outside.
You may define additional rules that will specify except ions to the def ault rule s. By adding custo m
rules, you can block or allow access based on the service or application, source or destination IP
addresses, and time of day. You can also choose to log traffic that matches or does not match the
rule you have defined.