設置ip forward

regedit

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

IPEnableRouter=1

或者 服務中找到RRAS選項 啟用！

xp用netsh設nat (2000server 有gui)

netsh routing ip nat install

netsh routing ip nat add interface "外網卡名" full

netsh routing ip nat add interface "本地連接" private