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‘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。
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<%
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Const BadIPGroup = "220.200.59.136|220.205.168.141"
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If IsForbidIP(BadIPGroup) = True Then
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Response.Write(GetUserIP &"IP地址禁止访问")
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Response.End()
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End If
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'****************************************************************
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'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)
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'返回Bool:True用户IP在被屏蔽范围,False 反之
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'****************************************************************
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Function IsForbidIP(vBadIP)
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Dim counter, arrIPPart, arrBadIP, arrBadIPPart, i, j
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arrBadIP = Split(vBadIP, "|")
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arrIPPart = Split(GetUserIP(), ".")
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For i = 0 To UBound(arrBadIP)
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counter = 0
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arrBadIPPart = Split(arrBadIP(i), ".")
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For j = 0 To UBound(arrIPPart)
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If (arrBadIPPart(j)) = "*" or Cstr(arrIPPart(j)) = Cstr(arrBadIPPart(j)) Then
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counter = counter + 1
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End If
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Next
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If counter = 4 Then
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IsForbidIP = True
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Exit Function
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End If
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Next
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IsForbidIP = False
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End Function
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'***************
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'返回客户IP地址
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'***************
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Function GetUserIP()
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Dim IP
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IP = Request.ServerVariables("HTTP_X_FORWARDED_FOR")
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If IP = "" Then IP = Request.ServerVariables("REMOTE_ADDR")
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GetUserIP = IP
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End Function
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%>