E220 Series Cellular Router User Guide 4Table of ContentsOverview .........................................................................................................7Prerequisite .....................................................................................................9Default Configuration..................................................................................... 10LED Behavior ................................................................................................. 11Logon Procedure ............................................................................................ 14Common Icons and Buttons............................................................................ 15Quick Setup ................................................................................................... 16Status ............................................................................................................ 19Status ............................................................................................................................ 19IPv4 Firewall .................................................................................................................. 31IPv6 Firewall .................................................................................................................. 33Wireless ........................................................................................................................ 38Load .............................................................................................................................. 40Traffic ............................................................................................................................ 41Connection .................................................................................................................... 46System .......................................................................................................... 48General Settings............................................................................................................ 48Logging .......................................................................................................................... 50Language and Style ....................................................................................................... 52Router Password ........................................................................................................... 53SSH Access .................................................................................................................... 54