92 2 0 0 0 - A 2 - G B 2 3 - 0 0Figure 4.59 Display Input/Output Filters Menuunload all filters Temporarily deactivates IP Filtering.NOTICE: You must unload the old rule set before loading a new rule set.Show IP FilteringstatisticsDisplays statistics for IP Filtering. Shows accumulated statistics for all Inputand Output filtersShow per filterstatisticsDisplays statistics for each active filter rule.Clear IP filteringstatisticsClears all accumulated statistics.Configure IP Header Compression (IPHC)IPHC reduces the number of bytes transmitted across the WAN, thusconserving bandwidth.To enable or disable IP header compression, follow the steps below:1 On the Router Configuration menu (Figure 4.51), type “Q”.2 The IAD displays the port table and prompts you to enter a port.3 Type the port number and press Enter. The IAD displays the headercompression status and prompts you to enable or disable IP HeaderCompression for SDSL.4 Type “E” to enable IP header compression on this port, or “D” to disable it.If you enable IP header compression, the IAD displays a message similar tothe following:Springtide Compatibility mode ENABLED (currently notselectable)The IAD saves the changes and displays the Router Configuration menu(Figure 4.51). Continue with other configuration tasks, or press Escape toreturn to the Main menu.