modules/apache2/manifests/dynamic.pp

   1 class apache2::dynamic {
   2         @ferm::rule { 'dsa-http-limit':
   3                 prio        => '20',
   4                 description => 'limit HTTP DOS',
   5                 chain       => 'http_limit',
   6                 rule        => 'mod limit limit-burst 60 limit 15/minute jump ACCEPT;
   7                                 jump DROP'
   8         }
   9
  10         @ferm::rule { 'dsa-http-soso':
  11                 prio        => '21',
  12                 description => 'slow soso spider',
  13                 chain       => 'limit_sosospider',
  14                 rule        => 'mod connlimit connlimit-above 2 connlimit-mask 21 jump DROP;
  15                                 jump http_limit'
  16         }
  17
  18         @ferm::rule { 'dsa-http-yahoo':
  19                 prio        => '21',
  20                 description => 'slow yahoo spider',
  21                 chain       => 'limit_yahoo',
  22                 rule        => 'mod connlimit connlimit-above 2 connlimit-mask 16 jump DROP;
  23                                 jump http_limit'
  24         }
  25
  26         @ferm::rule { 'dsa-http-google':
  27                 prio        => '21',
  28                 description => 'slow google spider',
  29                 chain       => 'limit_google',
  30                 rule        => 'mod connlimit connlimit-above 2 connlimit-mask 19 jump DROP;
  31                                 jump http_limit'
  32         }
  33
  34         @ferm::rule { 'dsa-http-bing':
  35                 prio        => '21',
  36                 description => 'slow bing spider',
  37                 chain       => 'limit_bing',
  38                 rule        => 'mod connlimit connlimit-above 2 connlimit-mask 16 jump DROP;
  39                           jump http_limit'
  40         }
  41
  42         @ferm::rule { 'dsa-http-baidu':
  43                 prio        => '21',
  44                 description => 'slow baidu spider',
  45                 chain       => 'limit_baidu',
  46                 rule        => 'mod connlimit connlimit-above 2 connlimit-mask 16 jump DROP;
  47                                 jump http_limit'
  48         }
  49
  50         @ferm::rule { 'dsa-http-rules':
  51                 prio        => '22',
  52                 description => 'http subchain',
  53                 chain       => 'http',
  54                 rule        => '
  55                                 saddr ( 74.6.22.182 74.6.18.240 67.195.0.0/16 ) jump limit_yahoo;
  56                                 saddr 124.115.0.0/21 jump limit_sosospider;
  57                                 saddr (65.52.0.0/14 207.46.0.0/16) jump limit_bing;
  58                                 saddr (66.249.64.0/19) jump limit_google;
  59                                 saddr (123.125.71.0/24 119.63.192.0/21 180.76.0.0/16) jump limit_baidu;
  60
  61                                 mod recent name HTTPDOS update seconds 1800 jump log_or_drop;
  62                                 mod hashlimit hashlimit-name HTTPDOS hashlimit-mode srcip hashlimit-burst 600 hashlimit 30/minute jump ACCEPT;
  63                                 mod recent name HTTPDOS set jump log_or_drop'
  64         }
  65
  66         @ferm::rule { 'dsa-http':
  67                 prio        => '23',
  68                 description => 'Allow web access',
  69                 rule        => 'proto tcp dport (http https) jump http'
  70         }
  71 }