有时，我们建立的数据库即便连接文件前面加#并将扩展名换成ASP，是防止有些人下载数据，不过这样也逃不脱黑客的攻击。下面我就介绍一种防暴SQL语句
<%
option explicit
'SQL注入式攻击防范
dim squery,sURL,allquery
squery=lcase(Request.ServerVariables("QUERY_STRING"))
sURL=lcase(Request.ServerVariables("HTTP_HOST"))
allquery=squery+sURL
if InStr(allquery,"%20")<>0 or InStr(allquery,"%27")<>0 or InStr(allquery,"'")<>0 or InStr(allquery,"%a1a1")<>0 or InStr(allquery,"%24")<>0 or InStr(allquery,"$")<>0 or InStr(allquery,"%3b")<>0 or InStr(allquery,";")<>0 or InStr(allquery,":")<>0 or InStr(allquery,"%%")<>0 or InStr(allquery,"%3c")<>0 or InStr(allquery,"<")<>0 or InStr(allquery,">")<>0 or InStr(allquery,"--")<>0 or InStr(allquery,"sp_")<>0 or InStr(allquery,"xp_")<>0 or InStr(allquery,"exec")<>0 or InStr(allquery,"\")<>0 or InStr(allquery,"delete")<>0 or InStr(allquery,"dir")<>0 or InStr(allquery,"exe")<>0 or InStr(allquery,"select")<>0 or InStr(allquery,"Update")<>0 or InStr(allquery,"cmd")<>0 or InStr(allquery,"*")<>0 or InStr(allquery,"^")<>0 or InStr(allquery,"(")<>0 or InStr(allquery,")")<>0 or InStr(allquery,"+")<>0 or InStr(allquery,"copy")<>0 or InStr(allquery,"format")<>0 or not(isnumeric(request("id"))) then%>
<script Language="JavaScript">window.top.location.href="Error.asp?allquery=<%=allquery%>"</script>
<%Response.End
end if
dim conn,connstr,startime,db,rs
startime=timer()
On Error Resume Next '防止暴库处理
db="to/#zol.mdb" '数据库路径
Set conn = Server.CreateObject("ADODB.Connection")
connstr="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath(""&db&"")
conn.Open connstr
If Err Then
err.Clear
Set Conn = Nothing
Response.Write "数据库连接出错，请检查连接字串。防止暴库处理。"
Response.End
End If
%>
