Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

iptables + php ÉÏÍø¼Æ·ÑʵÏÖ

×î½üÓÐÒ»¸öÏã¸ÛµÄ¾ÆµêÌá³öÐèÇó,Òªµ½¾ÆµêÒµÄÚµÄÉÌÎñÖÐÐÄʵÐмƷÑÉÏÍø, ÌṩÁËÈçϼ¼Êõ·½°¸:
1¡¢Éèһ̨CENTOS5µÄ»úÆ÷×öΪ·ÓÉ£¬°ÑÐèÒª¼Æ·ÑµÄ»úÆ÷¶¼ÉèΪÓô˷þÎñÆ÷×öÍø¹Ø¡£
2¡¢·þÎñÆ÷¿ªÆôIPTABLE£¬Í¨¹ýIPTABLE¿ØÖÆÄܲ»ÄÜʹÓû¥ÁªÍø¡£
¼Ç¼ÏÂÒÔϼ¼ÊõÒªµã:
Ò»¡¢ php¿ÉÒÔͨ¹ýshell_execÀ´Ö´ÐÐshellÖ¸Áµ«iptablesµÄÖ¸ÁîÊÇroot²ÅÓÐȨÏÞÖ´Ðеģ¬ËùÔÚÐèÒª½èÖúsudo.
¾ßÌå×ö·¨ÈçÏÂ:
1. Ö´ÐÐvisudo, ×¢Ê͵ô Default requiretty Ò»ÐÐ
2. ÔÚÎļþ×îºó£¬¼ÓÈëapache ALL = NOPASSWD: /sbin/iptables
3. ÓÃphp  shell_exec("/usr/bin/sudo /sbin/iptables -I FORWARD -s  xxx.xxx.xxx.xxx  -j DROP")ʵÏÖ¶ÏÍø
4. ÓÃphp  shell_exec("/usr/bin/sudo /sbin/iptables -I FORWARD -s  xxx.xxx.xxx.xxx  -j ACCEPT")ʵÏÖ¿ªÍ¨
¶þ¡¢CENTOS¿ªÆô·Óɹ¦ÄÜ:
1¡¢nano /etc/sysctl.conf£¬ÕÒµ½ÆäÖÐnet.ipv4.ip_forward£¬ÉèΪ1£¬±£´æºóÍ˳ö¡£
2¡¢sysctl -p /etc/sysctl.confÈÃÐÞ¸ÄÉúЧ¡£
Èý¡¢/etc/sysconfig/iptablesÄÚÈÝ£º
# Firewall configuration written by system-config-securitylevel
# Manual customization of this file is not recommended.
*filter
:FORWARD ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:RH-Firewall-1-INPUT - [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -i eth0 -j ACCEPT
-A INPUT -j RH-Firewall-1-INPUT
-A FORWARD -j RH-Firewall-1-INPUT
-A RH-Firewall-1-INPUT -i lo -j ACCEPT
-A RH-Firewall-1-INPUT -i eth0 -j ACCEPT
-A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT
-A RH-Firewall-1-INPUT -p 50 -j ACCEPT
-A RH-Firewall-1-INPUT -p 51 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp -d 224.0.0.251 --dport 5353 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m tcp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m state -m tcp --dport 1404 --state NEW -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m state -m tcp --dport 80 --state NEW -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m state -m tcp --dport 10000 --state NEW -j ACCEPT
-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
COMMIT
*n


Ïà¹ØÎĵµ£º

ѧϰPHP ÒýÓ÷µ»Ø ÒÔ&¿ªÍ·µÄº¯Êý µÄºÃÀý×Ó

<?php
$a = 1;
function b(&$c)
{
$c++;
return $c;
}
$d=b($a); // d = 2; a = 2;
$d++; // d = 2;
echo($a); // ÏÔʾ2
?>
ÒýÓ÷µ»Ø:
<?php
$a = 1;
function &b(&$c)
{
$c++;
return $c;
}
$d=b($a); // ×¢ÒâÕâÀï dÓëb·µ»ØµÄÖµ(È·ÇÐÀ´Ëµ, ÕâÀï·µ»ØµÄ² ......

PHPÖÐʹÓÃHTTPЭÒéµÄ״̬Âë

<?PHP
/**
* HTTP Protocol defined status codes
* @param int $num
*/
function https($num) {
$http = array (
100 => "HTTP/1.1 100 Continue",
101 => "HTTP/1.1 101 Switching Protocols",
200 => "HTTP/1.1 200 OK",
201 => "HTTP/1.1 201 Created",
202 => "HTTP/1.1 202 ......

´î½¨WindowsÏ»ùÓÚEclipse µÄ PHP ¿ª·¢»·¾³

¼¯³ÉÅäÖÃ
      ÔÚÅäÖÃEclipse֮ǰ£¬Ê×ÏÈÐèÒªÒ»¸öApache+PHPµÄ»ù´¡»·¾³£¬
¡¡¡¡¿ÉÒÔ×°wampp»òphp home£¬ËüÃǶ¼ÊǼ¯³É»¯°²×°£¬±È½Ï·½±ã£¬ÏÂÔØµØÖ·ÈçÏ£º
¡¡¡¡wampp2.2
¡¡¡¡php home
¡¡¡¡
¡¡¡¡½¨Òé×°wampp2.2£¬¼¯³ÉApache,MySQL,Perl,PHP¡£¶øÇÒ½âѹËõ¾Í¿ÉÓã¬ÎÒ¾ÍÓÃËüͦ·½±ãµÄ¡£
¡¡¡¡ÏÂÃæÎÒ¾Í ......

PHPÓëACCESSÁ´½ÓµÄÀà

[php]
<?php
--------------------------------------------------------------------
//FileName:class.php
//Summary: AccessÊý¾Ý¿â²Ù×÷Àà
//Author:  forest
//CreateTime: 2006-8-10    
//LastModifed:
//copyright (c)2006
//http://freeweb.nyist.net/~chairy 
//cha ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ