推荐的用Asp实现屏蔽IP地址访问的代码

2007-08-13 14:55:11 作者：

By zkxp 2/15/2006 http://zkxp.cnblogs.com
‘受屏蔽IP地址(段)集合，星号为通配符，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地址禁止访问")
    Response.End()
End If

'****************************************************************
'参数vBadIP：要屏蔽的IP段,IP地址集合，用|符号分隔多个IP地址(段)
'返回Bool：True用户IP在被屏蔽范围，False 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

'***************
'返回客户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
%>

推荐的用Asp实现屏蔽IP地址访问的代码

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