asp限制ip訪問代碼.doc

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1、ASP限制IP訪問代碼<%''獲取訪問者的地址ip=Request.ServerVariables("REMOTE_ADDR")''允許的IP地址段為10.0.0.0～10.50.50.255allowip1="10.0.0.0"allowip2="10.50.10.70"response.writecheckip(ip,allowip1,allowip2)functioncheckip(ip,allowip1,allowip2)dimcheck(4)checkip=falseipstr=split(ip,".")allow1=split(all

2、owip1,".")allow2=split(allowip2,".")ifcint(allow1(0))>cint(allow2(0))then''判斷IP地址段是否合*response.write"禁止訪問"exitfunctionendiffori=0toubound(ipstr)ifcint(allow1(i))

3、llow2(i))thencheck(i)=truecheckip=trueexitforelseifcint(ipstr(i))>cint(allow2(i))thencheck(i)=falsecheckip=falseexitforelsecheck(i)=truecheckip=trueendifendifendifelseifcint(allow1(i))>cint(ipstr(i))orcint(allow1(i))ubound(ip

4、str)thenexitforendifelsecheck(i)=trueendifendifnextif(check(0)=trueandcheck(1)=trueandcheck(2)=trueandcheck(3)=false)and(cint(allow2(2))>cint(ipstr(2)))thencheckip=trueendifendfunction%>