Mercurial > syslog2iptables

annotate syslog2iptables.conf.top @ 79:831d0b46bbd2 stable-1-0-18

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add more logging when blocked addresses move to higher scale values
author Carl Byington <carl@five-ten-sg.com>
date Wed, 15 Jul 2020 14:22:37 -0700
parents ae5e6bcc5017
children cc01f2caff37
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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d80641be405b add script to build syslog2iptables.conf
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1 context general {
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2 threshold 550;
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3
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4 add_command "/sbin/iptables -I INPUT --src %s --jump DROP";
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5 remove_command "/sbin/iptables -D INPUT --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
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11 file "/var/log/secure" {
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12 pattern "manual unblock (.*)" {
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13 index 1; // zero based
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14 bucket -5000;
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15 message "manual unblock";
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16 };
66
d179292293eb fix default config dovecot regular expressions; add manual blocking expression
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17 pattern "manual block (.*)" {
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18 index 1; // zero based
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19 bucket 5000;
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20 message "manual block";
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21 };
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22 pattern "sshd.*Failed password .* from ::ffff:(.*) port" {
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23 index 1; // zero based
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24 bucket 400;
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25 message "ssh failed password";
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26 };
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27 pattern "sshd.*Failed password .* from (.*) port" {
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28 index 1; // zero based
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29 bucket 400;
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30 message "ssh failed password";
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31 };
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32 pattern "sshd.*authentication failure; .* rhost=(.*) " {
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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.*Did not receive identification string from (.*)" {
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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 pattern "proftpd.* authentication failure; .* rhost=(.*) " {
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48 index 1; // zero based
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49 bucket 400;
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50 message "ftp failed password";
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51 };
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52 pattern "vsftpd.* authentication failure; .* rhost=(.*) " {
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53 index 1; // zero based
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54 bucket 400;
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55 message "ftp failed password";
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56 };
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57 };
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58
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59 file "/var/log/messages" {
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60 pattern "kernel.*local-net-to.*SRC=(.*) DST=.*DPT=" {
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61 index 1; // zero based
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62 bucket 400;
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63 message "kernel firewall blocked packet";
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64 };
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65 pattern "kernel.*outside-net-from.*SRC=(.*) DST=.*DPT=" {
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66 index 1; // zero based
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67 bucket 400;
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68 message "kernel firewall blocked packet";
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69 };
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70 };
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71
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72 file "/var/log/maillog" {
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73 pattern "lost input channel from.* \[(.*)\] .* after (mail|rcpt|auth)" {
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74 index 1; // zero based
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75 bucket 100;
61
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76 message "sendmail spammer dropping connection";
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77 };
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78 pattern " \[(.*)\].* possible SMTP attack" {
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79 index 1; // zero based
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80 bucket 100;
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81 message "sendmail authentication attack";
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82 };
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83 #pattern "rejecting commands from.* \[(.*)\] due to pre-greeting traffic" {
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84 # index 1; // zero based
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85 # bucket 0; // disable - iphone setup trips this; bucket 1800;
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86 # message "sendmail pre-greeting";
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87 #};
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ae5e6bcc5017 sendmail auth failure detection for both login and plain methods
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88 pattern "authentication failure: .* failed, .*\[(.*)\]" {
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89 index 1; // zero based
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90 bucket 100;
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91 message "sendmail authentication failed";
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92 };
65
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93 pattern "dovecot.*Aborted login .* rip=(.*), lip=" {
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94 index 1; // zero based
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95 bucket 100;
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96 message "dovecot failed password";
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97 };
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98 pattern "dovecot.*Disconnected.*auth failed.* rip=(.*), lip=" {
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99 index 1; // zero based
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100 bucket 100;
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101 message "dovecot failed password";
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102 };
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103 pattern "dovecot.*Login: user=.* rip=(.*), lip=" {
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104 index 1; // zero based
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105 bucket -5000;
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106 message "dovecot good authentication";
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107 };
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108 pattern "sendmail.*AUTH=server, .*\[(.*)\]," {
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109 index 1; // zero based
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110 bucket -5000;
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111 message "sendmail good authentication";
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112 };
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113 };