复制#!/bin/sh   INTIF="usb0" EXTIF="eth0" EXTIP="`/sbin/ifconfigeth0|grepinetaddr|awk{print$2}|sed-es/.*://`" /sbin/depmod-a   /sbin/modprobeip_tables   /sbin/modprobeip_conntrack   /sbin/modprobeip_conntrack_ftp   /sbin/modprobeip_conntrack_irc   /sbin/modprobeiptable_nat   /sbin/modprobeip_nat_ftp   echo"1">/proc/sys/net/ipv4/ip_forward   echo"1">/proc/sys/net/ipv4/ip_dynaddr   iptables-PINPUTACCEPT   iptables-FINPUT   iptables-POUTPUTACCEPT   iptables-FOUTPUT   iptables-PFORWARDDROP   iptables-FFORWARD   iptables-tnat-F   iptables-AFORWARD-i$EXTIF-o$INTIF-mstate--stateESTABLISHED,机何RELATED-jACCEPT   iptables-AFORWARD-i$INTIF-o$EXTIF-jACCEPT   iptables-tnat-APOSTROUTING-o$EXTIF-jMASQUERADE  1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.31.32.33.34.35.36.37.38.39.40.41.42.43.44.45.