4.8 ALG ......................................................................................................................................................................... 121
................................................................................................................................................. 123
4.9.1 Overview ......................................................................................................................................................... 123
.................................................................................................................................................. 124
4.10.1 QoS queue .................................................................................................................................................... 125
4.10.2 QoS classification.......................................................................................................................................... 130
................................................................................................................................................................. 136
4.11.1 Default gateway ........................................................................................................................................... 136
4.11.2 Static route ................................................................................................................................................... 136
4.11.3 RIP ................................................................................................................................................................ 138
4.12 DNS ....................................................................................................................................................................... 140
4.12.1 DNS server .................................................................................................................................................... 140
4.12.2 Dynamic DNS ................................................................................................................................................ 142
4.13 DSL ........................................................................................................................................................................ 145
P ..................................................................................................................................................................... 147
4.14.1 Overview ....................................................................................................................................................... 147
...................................................................................................................................................... 148
4.15.1 Overview ....................................................................................................................................................... 148
................................................................................................................................................ 151
4.16.1 Overview ....................................................................................................................................................... 151
............................................................................................................................................................... 153
4.17.1 IPv6inIPv4 ..................................................................................................................................................... 153
4.17.2 IPv4inIPv6 ..................................................................................................................................................... 154
..................................................................................................................................................................... 156
4.18.1 Overview ....................................................................................................................................................... 156
VII