BEC 7404 Series User Manual

Contents

Chapter 4: Configuration 60Any remote user who is attempting to perform this action may result in blockingall the accesses to configure and manage of the device from the Internet.General SettingsYou can choose not to enable Firewall, to add all filter rules by yourself, or enable the Firewallusing preset filter rules and modify the port filter rules as required. The Packet Filter is used to filterpackets based-on Applications (Port) or IP addresses.There are four options when you enable the Firewall, they are:~ All blocked/User-defined: no pre-defined port or address filter rules by default, meaning thatall inbound (Internet to LAN) and outbound (LAN to Internet) packets will be blocked. Usershave to add their own filter rules for further access to the Internet.~ High/Medium/Low security level: the predefined port filter rules for High, Medium and Lowsecurity are displayed in Port Filters of Packet Filter.Select either High, Medium or Low security level to enable the Firewall. The only differencebetween these three security levels is the preset port filter rules in the Packet Filter. Firewallfunctionality is the same for all levels; it is only the list of preset port filters that changes betweeneach setting. For more detailed on level of preset port filter information, refer to Table 1:Predefined Port Filter.If you choose of the preset security levels and then add custom filters, you may temporarily disablethe firewall and recover your custom filter settings by re-selecting the same security level.The “Block WAN Request” is a stand-alone function and not relate to whether security enable ordisable. Mostly it is for preventing any scan tools from WAN site by hacker.