ZyXEL P-314Plus User Guide - Page 121

Prestige 314 PLUS Broadband Sharing Gateway with 4-Port Switch Menu 21.7.1 - TCP/IP Filter Rule Filter #: 7,1 Filter Type= TCP/IP Filter Rule Active= Yes IP Protocol= 6 IP Source Route= No Destination: IP Addr= 0.0.0.0 IP Mask= 0.0.0.0 Port #= 21 Port # Comp= Equal Source: IP Addr= 0.0.0.0 IP Mask= 0.0.0.0 Port #= 0 Port # Comp= None TCP Estab= No More= No Log= None Action Matched= Drop Action Not Matched= Check Next Rule Press [SPACE BAR] to choose this filter rule type. The first filter rule type determines all subsequent filter types within a set. Select Yes to make the rule active. 6 is the TCP protocol. Press ENTER to Confirm or ESC to Cancel: Press Space Bar to Toggle. The port number for FTP is 21. See There are no more rules to check. Select Drop so that the packet will be dropped if its Select Equal here as we are looking for packets going to port 21 only. RFC 1060 for port numbers of wellknown services. destination is the telnet port. Select Check Next Rule here so that the next rule in this set will be checked. Figure 7-12 Example Filter - Menu 21.3.1 Step 6. Press [ENTER] to confirm and display the next screen. Note that there is only one filter rule in this set. Filter Configuration 7-15