Asp下实现限制IP访问的程序代码
            网络编程 发布日期:2025/11/1 浏览次数:1
         
        
            正在浏览:Asp下实现限制IP访问的程序代码
            <% 
''获取访问者的地址 
ip=Request.ServerVariables("REMOTE_ADDR")  
''允许的IP地址段为10.0.0.0~10.68.63.255 
allowip1="10.0.0.0" 
allowip2="10.68.10.71" 
response.write checkip(ip,allowip1,allowip2) 
function checkip(ip,allowip1,allowip2) 
dim check(4) 
checkip=false 
ipstr=split(ip,".") 
allow1=split(allowip1,".") 
allow2=split(allowip2,".") 
if cint(allow1(0))>cint(allow2(0)) then ''判断IP地址段是否合法 
response.write "禁止访问" 
exit function 
end if 
for i=0 to ubound(ipstr) 
if cint(allow1(i))<cint(allow2(i)) then 
if cint(allow1(i))=cint(ipstr(i)) then 
check(i)=true 
checkip=true 
exit for 
else 
if cint(ipstr(i))<cint(allow2(i)) then 
check(i)=true 
checkip=true 
exit for 
else 
if cint(ipstr(i))>cint(allow2(i)) then 
check(i)=false 
checkip=false 
exit for 
else 
check(i)=true 
checkip=true 
end if 
end if 
end if 
else 
if cint(allow1(i))>cint(ipstr(i)) or cint(allow1(i))<cint(ipstr(i)) then 
check(i)=false 
checkip=false 
if i<>ubound(ipstr) then 
exit for 
end if 
else 
check(i)=true 
end if 
end if 
next 
if (check(0)=true and check(1)=true and check(2)=true and check(3)=false) and (cint(allow2(2))>cint(ipstr(2))) then 
checkip=true 
end if 
end function 
%>