Asp限制IP访问

Asp限制IP访问

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作者：Pkxp 文章来源：IM286 点击数：1854 更新时间：2004-8-23

<%

''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))

if cint(allow1(i))=cint(ipstr(i)) then

check(i)=true

checkip=true

exit for

else

if cint(ipstr(i))

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))

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

%>