A more comprehensive asp anti-CC attack code sharing, mainly using session to judge. Copy the code code as follows:
<%
Dim CC_Info(4),strInfo,strTemp
If Session(CC_Info) = Then
CC_Info(0) = cclog.txt 'Log file name
CC_Info(1) = Request.ServerVariables(HTTP_X_FORWARDED_FOR)
CC_Info(2) = Request.ServerVariables(REMOTE_ADDR)
CC_Info(3) = 10 'Prohibit refreshing the current page within N seconds
CC_Info(4) = badip.txt 'IP blacklist file name
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 turns off anti-refresh
Const chkProxy = 1 '0 turns off proxy verification
Const chkBadIP = 1 '0 turns off IP blacklist
If Session(BadIP) = Then
strInfo = ReadFile(CC_Info(4))
If strInfo = Then strInfo = chinavb.net
Session(BadIP) = strInfo
Else
strInfo = Session(BadIP)
End If
'/*First layer judgment, prohibit refresh within N seconds*/
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(The system is busy, please try again later! Error code 001)
Response.End()
Else
Session(RefreshTime)=Now()
End If
End If
End If
'/*The second level of judgment, the agent prohibits viewing*/
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
'Record CC attack log
SaveLog CC_Info(0),CC_Info(1) & [& CC_Info(2) & ] & Now() &vbCrLf
Response.Write(The system is busy, please try again later! Error code 002)
Response.End()
End If
End If
'/*Third level judgment, IP blacklist prohibits viewing*/
If chkBadIP = 1 Then
If InStr(strInfo,CC_Info(2))>0 Then
Response.Write(The system is busy, please try again later! Error code 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(Failed to write file &filename&, maybe your system does not support 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(Failed to read file &filename&, maybe your system does not support 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
%>