<?php
$youip=$HTTP_SERVER_VARS["REMOTE_ADDR"];         // 获取本机IP地址 
$remoteip=$HTTP_POST_VARS['remoteip'];             // 获取表单提交的IP地址 
?> 
<html> 
<head> 
<title>php——端口在线检测</title> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 
<style TYPE="text/css"> 
<!-- 
BODY {   FONT-SIZE: 12px; FONT-FAMILY: Verdana;color:#000000; 
} 
TD { 
     FONT-SIZE: 12px; 
     FONT-FAMILY: Verdana; 
     color:#000000; 
     line-height: 14px; 
} 
.style1 {color: #FFFFFF} 
--> 
</style> 
</head> 
<body> 
<center> 
<?php 
if (!empty($remoteip)){ 
// 如果表单不为空就进入IP地址格式的判断
function err() { 
         die("对不起，该IP地址不合法<p><a href=javascript:history.back(1)>点击这里返回</a>"); 
} 
// 定义提交错误IP的提示信息
$ips=explode(".",$remoteip); 
// 用.分割IP地址
if (intval($ips[0])<1 or intval($ips[0])>255 or intval($ips[3])<1 or intval($ips[3]>255)) err(); 
// 如果第一段和最后一段IP的数字小于1或者大于255，则提示出错
if (intval($ips[1])<0 or intval($ips[1])>255 or intval($ips[2])<0 or intval($ips[2]>255)) err(); 
// 如果第二段和第三段IP的数字小于0或者大于255，则提示出错
$closed='此端口目前处于关闭状态。'; 
$opened='<font color=red>此端口目前处于打开状态！</font>'; 
$close="关闭"; 
$open="<font color=red>打开</font>"; 
$port=array(21,23,25,79,80,110,135,137,138,139,143,443,445,1433,3306,3389); 
$msg=array( 
'Ftp', 
'Telnet', 
'Smtp', 
'Finger', 
'Http', 
'Pop3', 
'Location Service', 
'Netbios-NS', 
'Netbios-DGM', 
'Netbios-SSN', 
'IMAP', 
'Https', 
'Microsoft-DS', 
'MSSQL', 
'MYSQL', 
'Terminal Services' 
);     
// 通过IP格式的检查后用数组定义各端口对应的服务名称及状态
echo "<table   border=0 cellpadding=15 cellspacing=0>\n"; 
echo "<tr>\n"; 
echo "<td align=center><strong>您扫描的IP：<font 
color=red>".$remoteip."</font></strong></td>\n"; 
echo "</tr>\n"; 
echo "</table>\n"; 
echo "<table cellpadding=5 cellspacing=1 bgcolor=#636194>\n"; 
echo "<tr bgcolor=#7371A5 align=center>\n"; 
echo "<td><span class=style1>端口</span></td>\n"; 
echo "<td><span class=style1>服务</span></td>\n"; 
echo "<td><span class=style1>检测结果</span></td>\n"; 
echo "<td><span class=style1>描述</span></td>\n"; 
echo "</tr>\n"; 
// 输出显示的表格
for($i=0;$i<sizeof($port);$i++) 
{ 
$fp = @fsockopen($remoteip, $port[$i], &$errno, &$errstr, 1); 
   if (!$fp) { 
     echo "<tr bgcolor=#FFFFFF><td align=center>".$port[$i]."</td><td>".$msg[$i]."</td><td 
align=center>".$close."</td><td>".$closed."</td></tr>\n"; 
   } else { 
     echo "<tr bgcolor=#F4F7F9><td align=center>".$port[$i]."</td><td>".$msg[$i]."</td><td 
align=center>".$open."</td><td>".$opened."</td></tr>"; 
   } 
} 
// 用for语句，分别用fsockopen函数连接远程主机的相关端口，并输出结果
echo "<tr><td colspan=4 align=center>\n"; 
echo "<a href=portscan.php><font color=#FFFFFF>继续扫描>>></font></a></td>\n"; 
echo "</tr\n"; 
echo "</table>\n"; 
echo "<TABLE cellSpacing=0 cellPadding=10 width=100% border=0>\n"; 
echo "<TR>\n"; 
echo "<TD align=center><b>Copyright &copy; 2004 Security Angel Team[S4T] All Rights Reserved.</b></TD>\n"; 
echo "</TR>\n"; 
echo "</TABLE>\n"; 
echo "</center>\n"; 
echo "</body>\n"; 
echo "</html>\n"; 
exit; 
} 
// 探测结束
echo "<table   border=0 cellpadding=15 cellspacing=0>\n"; 
echo "<tr>\n"; 
echo "<td align=center><strong>您的IP：<font color=red>".$youip."</font></strong></td>\n"; 
echo "</tr>\n"; 
echo "<form method=POST action=portscan.php>\n"; 
echo "<tr><td>\n"; 
echo "<input type=text name=remoteip size=12>\n"; 
echo "<input type=submit value=扫描 name=scan>\n"; 
echo "</td></tr>\n"; 
echo "</form>"; 
echo "</table>\n"; 
// 如果表单为空则显示提交IP地址的表单
?>
<TABLE cellSpacing=0 cellPadding=10 width="100%" border=0> 
   <TR> 
     <TD align=center><b>Copyright &copy; 2004 Security Angel Team[S4T] All Rights Reserved.</b></TD> 
   </TR> 
</TABLE> 
</center> 
</body> 
</html>