Mercurial > syslog2iptables

annotate syslog2iptables.conf @ 53:d6fb7fca0394 stable-1-0-13

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Document multiple contexts
author Carl Byington <carl@five-ten-sg.com>
date Sun, 25 Jan 2009 08:37:36 -0800
parents 206448c00b55
children d237bc6331ad
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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51
206448c00b55 Allow multiple contexts with independent add/remove commands.
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1 context dns {
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2 threshold 1100;
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3
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4 add_command "/sbin/iptables -I INPUT --protocol udp --destination-port 53 --src %s --jump DROP";
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5 remove_command "/sbin/iptables -D INPUT --protocol udp --destination-port 53 --src %s --jump DROP";
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6
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7 ignore {
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8 127.0.0.0/8; // localhost
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9 };
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10
51
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11 file "/var/log/messages" {
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12 pattern "named.*client (.*)#.*query.*cache.*denied" {
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13 index 1; // zero based
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14 bucket 400;
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15 message "DNS attack";
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16 };
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17 };
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18 };
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51
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20
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21 context general {
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22 threshold 550;
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23
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24 add_command "/sbin/iptables -I INPUT --src %s --jump DROP";
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25 remove_command "/sbin/iptables -D INPUT --src %s --jump DROP";
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26
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27 ignore {
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28 127.0.0.0/8; // localhost
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29 };
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30
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31 file "/var/log/secure" {
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32 pattern "sshd.*Failed password .* from ::ffff:(.*) port" {
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33 index 1; // zero based
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34 bucket 400;
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35 message "ssh failed password";
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36 };
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37 pattern "sshd.*Failed password .* from (.*) port" {
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38 index 1; // zero based
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39 bucket 400;
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40 message "ssh failed password";
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41 };
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42 pattern "proftpd.*no such user found from (.*) \[" {
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43 index 1; // zero based
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44 bucket 400;
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45 message "ftp failed password";
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46 };
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47 };
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48
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49 file "/var/log/messages" {
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50 pattern "ipop3d.* Login failed .* \[(.*)\]" {
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51 index 1; // zero based
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52 bucket 400;
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53 message "pop3 failed password";
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54 };
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55 };
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56
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57 file "/var/log/httpd/access_log" {
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58 // of course you cannot use this if you actually use cgi-bin directories
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59 pattern "(.*) - - .* /cgi-bin" {
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60 index 1; // zero based
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61 bucket 400;
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62 message "apache cgi-bin reference";
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63 };
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64 // or if you actually have an index2.php script
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65 pattern "(.*) - - .*/index2.php" {
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66 index 1; // zero based
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67 bucket 400;
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68 message "apache index2.php reference";
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69 };
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70 // or if you have a main.php script
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71 pattern "(.*) - - .*/main.php" {
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72 index 1; // zero based
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73 bucket 400;
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74 message "apache main.php reference";
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75 };
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76 pattern "(.*) - - .*/awstats.pl" {
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77 index 1; // zero based
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78 bucket 400;
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79 message "apache awstats.pl reference";
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80 };
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81 pattern "(.*) - - .*/adxmlrpc" {
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82 index 1; // zero based
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83 bucket 400;
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84 message "apache adxmlrpc reference";
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85 };
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86 };
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87
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88 file "/var/log/maillog" {
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89 pattern "lost input channel from .* \[(.*)\] .* after (mail|rcpt|auth)" {
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90 index 1; // zero based
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91 bucket 200;
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92 message "sendmail spammer dropping connection";
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93 };
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94 pattern " \[(.*)\]: possible SMTP attack" {
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95 index 1; // zero based
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96 bucket 600;
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97 message "sendmail authentication attack";
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98 };
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99 pattern "rejecting commands from .* \[(.*)\] due to pre-greeting traffic" {
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100 index 1; // zero based
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101 bucket 200;
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102 message "sendmail pre-greeting";
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103 };
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104 pattern "dovecot.*Aborted login.*rip=(.*)," {
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105 index 1; // zero based
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106 bucket 100;
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107 message "dovecot failed password";
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108 };
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109 pattern "dovecot: pop3-login: Disconnected: Shutting down.*rip=(.*)," {
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110 index 1; // zero based
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111 bucket 100;
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112 message "dovecot failed password";
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113 };
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114
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115 // make sure your upstream MX servers are listed in the
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116 // ignore block above, otherwise you will kill them off
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117 // when they try to forward such mail to you.
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118 pattern "sendmail.*from=<>,.*nrcpts=0,.*\[(.*)\]" {
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119 index 1; // zero based
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120 bucket 200;
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121 message "sendmail rejected bounce";
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122 };
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123 };
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124 };
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125