防范SQL注入攻击的新办法

            
Function SafeRequest(ParaName)  
Dim ParaValue  
ParaValue=Request(ParaName) 
if IsNumeric(ParaValue) = True then 
SafeRequest=ParaValue 
exit Function 
elseIf Instr(LCase(ParaValue),"select ") > 0 or Instr(LCase(ParaValue),"insert ") > 0 
            
or Instr(LCase(ParaValue),"delete from") > 0 or Instr(LCase(ParaValue),"count(") > 0 
            
or Instr(LCase(ParaValue),"drop table") > 0 or Instr(LCase(ParaValue),"update ") > 0 
            
or Instr(LCase(ParaValue),"truncate ") > 0 or Instr(LCase(ParaValue),"asc(") > 0 
            
or Instr(LCase(ParaValue),"mid(") > 0 or Instr(LCase(ParaValue),"char(") > 0 
            
or Instr(LCase(ParaValue),"xp_cmdshell") > 0 or Instr(LCase(ParaValue),"exec master") > 0 
            
or Instr(LCase(ParaValue),"net localgroup administrators") > 0  
            
or Instr(LCase(ParaValue)," and ") > 0 or Instr(LCase(ParaValue),"net user") > 0 
            
or Instr(LCase(ParaValue)," or ") > 0 then 
Response.Write "<script language='javascript'>" 
Response.Write "alert('非法的请求!');"  '发现SQL注入攻击提示信息 
Response.Write "location.href='http://dev.yesky.com/';"  '发现SQL注入攻击转跳网址 
Response.Write "<script>" 
Response.end 
else 
SafeRequest=ParaValue 
End If 
End function