asp中对ip进行过滤限制函数_asp技巧

看了一些IP限制的函数，觉得太复杂。所以，试着写了一个，比较简单。请网友参考指教。谢谢！～

代码拷贝框
<%<br /> 获取访问者的地址<br /> ip=Request.ServerVariables(“REMOTE_ADDR”) </p> <p>允许的IP地址段为10.0.0.0～10.68.63.255<br /> allowip1=”10.0.0.0″<br /> allowip2=”10.68.10.71″</p> <p>response.write checkip(ip,allowip1,allowip2)</p> <p>function checkip(ip,allowip1,allowip2)<br /> dim check(4)<br /> checkip=false<br /> ipstr=split(ip,”.”)<br /> allow1=split(allowip1,”.”)<br /> allow2=split(allowip2,”.”)<br /> if cint(allow1(0))>cint(allow2(0)) then 判断IP地址段是否合法<br /> response.write “IP地址段出错！”<br /> exit function<br /> end if<br /> for i=0 to ubound(ipstr)<br /> if cint(allow1(i))<cint(allow2(i)) then<br /> if cint(allow1(i))=cint(ipstr(i)) then<br /> check(i)=true<br /> checkip=true<br /> exit for<br /> else<br /> if cint(ipstr(i))<cint(allow2(i)) then<br /> check(i)=true<br /> checkip=true<br /> exit for<br /> else<br /> if cint(ipstr(i))>cint(allow2(i)) then<br /> check(i)=false<br /> checkip=false<br /> exit for<br /> else<br /> check(i)=true<br /> checkip=true<br /> end if<br /> end if<br /> end if<br /> else<br /> if cint(allow1(i))>cint(ipstr(i)) or cint(allow1(i))<cint(ipstr(i)) then<br /> check(i)=false<br /> checkip=false<br /> if i<>ubound(ipstr) then<br /> exit for<br /> end if<br /> else<br /> check(i)=true<br /> end if<br /> end if<br /> next</p> <p>if (check(0)=true and check(1)=true and check(2)=true and check(3)=false) and (cint(allow2(2))>cint(ipstr(2))) then<br /> checkip=true<br /> end if</p> <p>end function<br /> %>