Dell PowerConnect W-Instant Access Point 5.0.3.0-1.1.0.0 | User Guide Instant Firewall | 91Chapter 12Instant FirewallA firewall is a system designed to prevent unauthorized Internet users from accessing the private networkconnected to the Internet. It defines access rules and monitors all data entering or leaving the network and blocksthe data that does not satisfy the specified security policies.Dell Instant implements the Instant Firewall feature that uses a simplified firewall policy language. Anadministrator can define the firewall policies on an SSID or wireless network such as the Guest network or anEmployee network. At the end of authentication, these policies are uniformly applied to users connected to thatnetwork. The Instant Firewall gives the flexibility to limit packets or bandwidth available to particular class ofusers. Instant Firewall treats packets based on the first rule matched.Figure 75 Access Tab - Instant Firewall SettingsService OptionsTable 10 lists a sample set of service options available in the Instant UI. You can allow or deny access to any or allof these services depending on your requirements.Table 10 Network Service OptionsService Descriptionany Access is allowed or denied to all services.custom Available options are TCP, UDP, and Other. If you select the TCP or UDP options,enter appropriate port numbers. If you select the other option, enter theappropriate ID.adp Application Distribution Protocolbootp Bootstrap Protocol