限制ip访问网站问题
在主页的开始加入如下一段后,但我拿ip是192.168.1.206的机子去访问为什么返回的值是true呢??求高手
代码如下:
<%
dim ip,allow1,allow2,allowip1,allowip2,ipstr,i
''获取访问者的地址
ip=Request.ServerVariables("REMOTE_ADDR")
''允许的IP地址段为192.168.1.207~192.168.1.255
allowip1="192.168.1.207"
allowip2="192.168.1.255"
response.write checkip(ip,allowip1,allowip2)
function checkip(ip,allowip1,allowip2)
dimcheck(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
%>