我想屏蔽一个ip段的访问权限,10.1.7.8---10.9.45.2 我该怎么判断用户的ip是否在这个段之内呢。
谢谢。
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有人这么做:
1
2function IP2Num(sip)
3dim str1,str2,str3,str4
4dim num
5IP2Num=0
6if isnumeric(left(sip,2)) then
7str1=left(sip,instr(sip,".")-1)
8sip=mid(sip,instr(sip,".")+1)
9str2=left(sip,instr(sip,".")-1)
10sip=mid(sip,instr(sip,".")+1)
11str3=left(sip,instr(sip,".")-1)
12str4=mid(sip,instr(sip,".")+1)
13num=cint(str1)*256*256*256+cint(str2)*256*256+cint(str3)*256+cint(str4)-1
14IP2Num = num
15end if
16end function
17
18userIPnum = IP2Num(Request.ServerVariables("REMOTE_ADDR"))
19
20
21if userIPnum>IP2Num("10.1.7.8") and userIPnum
<ip2num("10.9.45.2") showmessage("<center="" then="">IP被禁")
end if