ZyXEL VMG4927-B50A User Guide - Page 189
Protocol
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Chapter 16 Firewall Figure 107 Security > Firewall > General The following table describes the labels in this screen. Table 75 Security > Firewall > General LABEL DESCRIPTION Firewall Select Enable to activate the firewall feature on the VMG. Low Select Low to allow LAN to WAN and WAN to LAN packet directions. Medium Select Medium to allow LAN to WAN but deny WAN to LAN packet directions. High Select High to deny LAN to WAN and WAN to LAN packet directions. Apply Click Apply to save your changes. Cancel Click Cancel to restore your previously saved settings. 16.3 Protocol You can configure customized services and port numbers in the Protocol screen. For a comprehensive list of port numbers and services, visit the IANA (Internet Assigned Number Authority) website. See Appendix D on page 311 for some examples. Click Security > Firewall > Protocol to display the following screen. VMG4927-B50A / VMG9827-B50A User's Guide 189