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较为全方位的asp防CC攻击代码分享

发布时间:2023-06-21 13:50:38 所属栏目:Asp教程 来源:
导读:较为全面的asp防CC攻击代码分享,主要是用session进行判断。

复制代码代码如下:

<%

Dim CC_Info(4),strInfo,strTemp

If Session("CC_Info") = "" Then

CC_Info(0) = "cclog.txt" &#39;日志文件名
较为全面的asp防CC攻击代码分享,主要是用session进行判断。
 
复制代码代码如下:
 
<%
 
Dim CC_Info(4),strInfo,strTemp
 
If Session("CC_Info") = "" Then
 
CC_Info(0) = "cclog.txt" '日志文件名
 
CC_Info(1) = Request.ServerVariables("HTTP_X_FORWARDED_FOR")
 
CC_Info(2) = Request.ServerVariables("REMOTE_ADDR")
 
CC_Info(3) = 10 'N秒内禁止刷新当前页面
 
CC_Info(4) = "badip.txt" 'IP黑名单文件名
 
Session("CC_Info") = CC_Info(0) &"|"& CC_Info(1) &"|"& CC_Info(2) &"|"& CC_Info(3) &"|"& CC_Info(4)
 
Else
 
strInfo = Split(Session("CC_Info"),"|")
 
CC_Info(0) = strInfo(0)
 
CC_Info(1) = strInfo(1)
 
CC_Info(2) = strInfo(2)
 
CC_Info(3) = strInfo(3)
 
CC_Info(4) = strInfo(4)
 
End If
 
Const chkRefresh = 1 '0关闭防刷新
 
Const chkProxy = 1 '0关闭代理验证
 
Const chkBadIP = 1 '0关闭IP黑名单
 
If Session("BadIP") = "" Then
 
strInfo = ReadFile(CC_Info(4))
 
If strInfo = "" Then strInfo = "chinavb.net"
 
Session("BadIP") = strInfo
 
Else
 
strInfo = Session("BadIP")
 
End If
 
'/*第一层判断,N秒内禁止刷新*/
 
If chkRefresh = 1 Then
 
If Session("RefreshTime")="" Then
 
Session("RefreshTime")=Now()
 
Else
 
If DateDiff("s", Session("RefreshTime"), Now()) < CInt(CC_Info(3)) Then
 
Response.Write("系统繁忙,请稍候再试!错误代码001")
 
Response.End()
 
Else
 
Session("RefreshTime")=Now()
 
End If
 
End If
 
End If
 
'/*第二层判断,代理禁止查看*/
 
If chkProxy = 1 Then
 
If CC_Info(1) <> "" Then
 
If InStr(strInfo,CC_Info(1)) = 0 Then
 
strTemp = CC_Info(1) & vbCrLf
 
If InStr(strInfo,CC_Info(2)) = 0 Then
 
strTemp = strTemp & "[" & CC_Info(2) & "]" & vbCrLf
 
End If
 
SaveLog CC_Info(4),strTemp
 
strInfo = strInfo & strTemp
 
Session("BadIP") = strInfo
 
End If
 
'记录CC攻击日志
 
SaveLog CC_Info(0),CC_Info(1) & "["& CC_Info(2) & "]" & Now() &vbCrLf
 
Response.Write("系统繁忙,请稍候再试!错误代码002")
 
Response.End()
 
End If
 
End If
 
'/*第三层判断,IP黑名单禁止查看*/
 
If chkBadIP = 1 Then
 
If InStr(strInfo,CC_Info(2))>0 Then
 
Response.Write("系统繁忙,请稍候再试!错误代码003")
 
Response.End()
 
End If
 
End If
 
'ForReading=1,ForWriting=2,ForAppending=8
 
Function SaveLog(filename, filecontent)
 
On Error Resume Next
 
Dim fso, thisfile
 
filename = Server.MapPath(filename)
 
Set fso = CreateObject("Scripting.FileSystemObject")
 
If Err <> 0 Then
 
Response.Write("写入文件"&filename&"失败,可能您的系统不支持FSO!")
 
Response.End()
 
End If
 
Set thisfile = fso.OpenTextFile(filename, 8, True)
 
thisfile.write (filecontent)
 
thisfile.Close
 
Set fso = Nothing
 
End Function
 
Function ReadFile(filename)
 
On Error Resume Next
 
Dim fso, thisfile
 
Set fso = CreateObject("Scripting.FileSystemObject")
 
If Err <> 0 Then
 
Response.Write("读取文件"&filename&"失败,可能您的系统不支持FSO!")
 
Response.End()
 
End If
 
Set thisfile = fso.OpenTextFile(Server.MapPath(filename), 1, True)
 
ReadFile = thisfile.ReadAll
 
thisfile.Close
 
Set thisfile = Nothing
 
Set fso = Nothing
 
End Function
 
%>
 
 

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