asp檢查ip地址是否為私有/內(nèi)網(wǎng)ip地址源代碼。

內(nèi)網(wǎng)/私有IP地址網(wǎng)段如下，還有127開頭的回環(huán)地址:

10.0.0.0-10.255.255.255

172.16.0.0—172.31.255.255

192.168.0.0-192.168.255.255

實現(xiàn)代碼：

01 <%

02 function IpToNumber(ip)'IP地址轉(zhuǎn)為數(shù)字

03 arr=split(ip,".")

04 IpToNumber=256*256*256*clng(arr(0))+256*256*clng(arr(1))+256*clng(arr(2))+clng(arr(3))

05 end function

06 function IsPrivateIp(ip)'判斷給定的IP地址是否內(nèi)網(wǎng)/私有ip地址

07 if instr(ip,"127.")=1 then'回環(huán)IP地址

08 IsPrivateIp=true:exit function

09 end if

10 ABegin=IpToNumber("10.0.0.0"):AEnd=IpToNumber("10.255.255.255")'A類私有IP地址

11 BBegin=IpToNumber("172.16.0.0"):BEnd=IpToNumber("172.31.255.255")'B類私有IP地址

12 CBegin=IpToNumber("192.168.0.0"):CEnd=IpToNumber("192.168.255.255")'C類私有IP地址

13 IpNum=IpToNumber(ip)

14 IsPrivateIp=(ABegin<=IpNum and IpNum<=AEnd) or (BBegin<=IpNum and IpNum<=BEnd) or (CBegin<=IpNum and IpNum<=CEnd)

15 end function

16 Response.Write IsPrivateIp("11.255.255.255")&"<br>"'false

17 Response.Write IsPrivateIp("182.255.255.255")&"<br>"'false

18 Response.Write IsPrivateIp("172.30.255.255")&"<br>"'true

19 Response.Write IsPrivateIp("192.168.205.2")&"<br>"'true

20 Response.Write IsPrivateIp("127.168.205.2")'true

21 %>

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