[server] fail2ban 금지 된 IP 공유

한때이 사이트 에서 fail2ban 데이터를 중앙 집중화하는 시스템을보고 수정 된 버전을 만들었습니다. 데이터베이스는 동일하지만 bu를 변경하고 스크립트를 만들었습니다.

내 시스템에는 4 가지 구성 요소가 있습니다.

1. fail2ban 데이터베이스

   하나의 테이블 만 포함하는 MySQL 데이터베이스입니다 erp_core_fail2ban.

   CREATE TABLE IF NOT EXISTS 'erp_core_fail2ban' (
     'id' bigint(20) unsigned NOT NULL AUTO_INCREMENT,
     'hostname' varchar(255) COLLATE utf8_unicode_ci DEFAULT NULL,
     'created' datetime NOT NULL,
     'name' text COLLATE utf8_unicode_ci NOT NULL,
     'protocol' varchar(16) COLLATE utf8_unicode_ci NOT NULL,
     'port' varchar(32) COLLATE utf8_unicode_ci NOT NULL,
     'ip' varchar(64) COLLATE utf8_unicode_ci NOT NULL,
     PRIMARY KEY ('id'),
     KEY 'hostname' ('hostname','ip')
   ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
   

2. fail2ban.php

   호스트가 금지 될 때마다 데이터베이스가 채워집니다.

   
   <?php
   require_once("/etc/fail2ban/phpconfig.php");
   
   $name = $_SERVER["argv"][1];
   $protocol = $_SERVER["argv"][2];
   $port = $_SERVER["argv"][3];
   if (!preg_match('/^\d{1,5}$/', $port))
       $port = getservbyname($_SERVER["argv"][3], $protocol);
   $ip = $_SERVER["argv"][4];
   
   $hostname = gethostname();
   
   $query = "INSERT INTO 'erp_core_fail2ban' set hostname='" . addslashes($hostname) . "', name='" . addslashes($name) ."', protocol='" . addslashes($protocol) . "', port='" . addslashes($port) . "', ip='" . addslashes($ip) . "', created=NOW()";
   $result = mysql_query($query) or die('Query failed: ' . mysql_error());
   mysql_close($link);
   exit;
   ?>
   

3. 크론

   이것을 매분마다 crontab에서 실행합니다. 마지막으로 추가 한 호스트를 검색하여 금지합니다.

   
   <?php
   // phpconfig.php will have database configuration settings
   require_once("/etc/fail2ban/phpconfig.php");
   
   // file with only a line, containing the last id banned
   $lastbanfile="/etc/fail2ban/lastban";
   
   $lastban = file_get_contents($lastbanfile);
   
   // select only hosts banned after last check
   $sql = "select id, ip from erp_core_fail2ban where id > $lastban";
   $result = mysql_query($sql) or die('Query failed: ' . mysql_error());
   mysql_close($link);
   
   while ($row = mysql_fetch_array($result)) {
           //
           $id = $row['id'];
           $ip = $row['ip'];
   
       exec("fail2ban-client set $jail banip $ip");
   
   }
   // $id contains the last banned host, add it to the config file
   
   file_put_contents($lastbanfile, $id);
   
   ?>
   
   

4. phpconfig

   이 파일은 / etc / fail2ban로 이동하여 데이터베이스 구성 및 jail을 선택합니다.

   
   <?php
   // jail to be used
   $jail = "ssh";
   
   // file to keep the last ban
   $lastbanfile="/etc/fail2ban/lastban";
   
   // database configuration
   $dbserver="localhost";
   $dbuser="root";
   $dbpass="root";
   $dbname="fail2ban";
   
   // connect to database
   $link = mysql_connect($dbserver, $dbuser, $dbpass) or die('Could not connect: ' . mysql_error());
   mysql_select_db($dbname) or die('Could not select database');
   
   ?>
   

해당 파일을 작성하고 fail2ban에서 구성을 변경하십시오.

actionban = .....PHP 스크립트를 호출하기 위해 새 행이 삽입 된 줄 다음에 :

/root/fail2ban.php <name> <protocol> <port> <ip>

모든 서버에서이 구조를 사용하면 한 호스트에서 한 호스트가 금지 될 때마다 다른 모든 서버에서도 해당 서버가 금지됩니다.

답변

logtarget = /efsmount/fail2ban/server1.log

[Definition]

failregex = .* Ban <HOST>

ignoreregex =

[fail2ban-log]
enabled = true
port = http,https
findtime = 86400 ; 1 day
logpath  = /efsmount/fail2ban/server1.log
        /efsmount/fail2ban/server2.log
        /efsmount/fail2ban/server3.log
        /efsmount/fail2ban/server4.log
maxretry = 1

sudo fail2ban-client reload

sudo grep fail2ban /var/log/audit/audit.log | sudo audit2allow -M fail2ban-nfs

sudo semodule -i fail2ban-nfs.pp

sudo cat /var/log/audit/audit.log |grep fail2ban |grep denied

action_mwm = %(banaction)s[name=%(__name__)s, bantime="%(bantime)s", port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"]
             %(mta)s-whois-matches[name=%(__name__)s, dest="%(destemail)s", chain="%(chain)s"]

action = %(action_mwm)s

#!/usr/bin/php
<?php
// jail to be used
$jail = "ssh";

// file to keep the last ban
$lastbanfile="/etc/fail2ban/lastban";

// database configuration
$dbserver="[your.mysql.hostname]";
$dbport="[sql.port.default.is.3306]";
$dbuser="[sql.user";
$dbpass="[sql.password]";
$dbname="[sql.table]";

// connect to database
$link = mysqli_connect($dbserver, $dbuser, $dbpass, $dbname, $dbport) or die('Could not connect: ' . mysqli_error());
mysqli_select_db($link,$dbname) or die('Could not select database');

?>

#!/usr/bin/php
<?php
require_once("/etc/fail2ban/phpconfig.php");

$name = $_SERVER["argv"][1];
$protocol = $_SERVER["argv"][2];
$port = $_SERVER["argv"][3];
if (!preg_match('/^\d{1,5}$/', $port))
    $port = getservbyname($_SERVER["argv"][3], $protocol);
$ip = $_SERVER["argv"][4];

$hostname = gethostname();

$query = "INSERT INTO erp_core_fail2ban (hostname,created,name,protocol,port,ip) VALUES ('$hostname',NOW(),'$name','$protocol','$port','$ip')";
echo $query;
$result = mysqli_query($link,$query) or die('Query failed: ' . mysqli_error($link));
mysqli_close($link);
exit;
?>

#!/usr/bin/php
<?php
// phpconfig.php will have database configuration settings
require_once("/etc/fail2ban/phpconfig.php");

// file with only a line, containing the last id banned
$lastbanfile="/etc/fail2ban/lastban";

$lastban = file_get_contents($lastbanfile);
// select only hosts banned after last check
$sql = "SELECT id,ip FROM erp_core_fail2ban WHERE id > $lastban";
$result = mysqli_query($link,$sql) or die('Query failed: ' . mysqli_error($link));
mysqli_close($link);

while ($row = mysqli_fetch_array($result)) {
        //
        $id = $row['id'];
        $ip = $row['ip'];

    exec("fail2ban-client set $jail banip $ip");


}

// $id contains the last banned host, add it to the config file
file_put_contents($lastbanfile, $id);
?>

actionban = ...
            /etc/fail2ban/fail2ban.php

Is there an easy way to share banned IPs between hosts I control?

Is there a way to share banned IPs publicly?