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受屏蔽IP地址(段)集合，星號(hào)為通配符，通常保存于配置文件中。
<%
Const BadIPGroup = "220.200.59.136|220.205.168.141"
If IsForbidIP(BadIPGroup) = True Then
Response.Write(GetUserIP &"IP地址禁止訪問(wèn)")
Response.End()
End If
'****************************************************************
'參數(shù)vBadIP：要屏蔽的IP段,IP地址集合，用|符號(hào)分隔多個(gè)IP地址(段)
'返回Bool：True用戶IP在被屏蔽范圍，F(xiàn)alse 反之
'****************************************************************
Function IsForbidIP(vBadIP)
Dim counter, arrIPPart, arrBadIP, arrBadIPPart, i, j
arrBadIP = Split(vBadIP, "|")
arrIPPart = Split(GetUserIP(), ".")
For i = 0 To UBound(arrBadIP)
counter = 0
arrBadIPPart = Split(arrBadIP(i), ".")
For j = 0 To UBound(arrIPPart)
If (arrBadIPPart(j)) = "*" or Cstr(arrIPPart(j)) = Cstr(arrBadIPPart(j)) Then
counter = counter + 1
End If
Next
If counter = 4 Then
IsForbidIP = True
Exit Function
End If
Next
IsForbidIP = False
End Function
'***************
'返回客戶IP地址
'***************
Function GetUserIP()
Dim IP
IP = Request.ServerVariables("HTTP_X_FORWARDED_FOR")
If IP = "" Then IP = Request.ServerVariables("REMOTE_ADDR")
GetUserIP = IP
End Function
%>

該文章在 2011/2/16 11:20:59 編輯過(guò)