Firewall rules are the set of rules that an administrator or user will set on a firewall to cause the firewall to filter traffic in a particular way. The firewall rules may specify any HTTP traffic from the internet be directed to a specific server such as a HTTP server. The rules will vary depending on the type of firewall. The firewall rules on a personal firewall may allow a specific application program to access the internet. The firewall rules on a network firewall may define the traffic allowed between zones. It may specify that only specific traffic from the trusted zone be allowed to go to the internet.