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1 | # Thresholding: |
2 | # | |
3 | # This feature is used to reduce the number of logged alerts for noisy rules. | |
4 | # Thresholding commands limit the number of times a particular event is logged | |
5 | # during a specified time interval. | |
6 | # | |
95cd8bf6 | 7 | # The syntax is the following: |
af7f4b34 VJ |
8 | # |
9 | # threshold gen_id <gen_id>, sig_id <sig_id>, type <limit|threshold|both>, track <by_src|by_dst>, count <n>, seconds <t> | |
10 | # | |
11 | # event_filter gen_id <gen_id>, sig_id <sig_id>, type <limit|threshold|both>, track <by_src|by_dst>, count <n>, seconds <t> | |
12 | # | |
13 | # suppress gen_id <gid>, sig_id <sid> | |
14 | # suppress gen_id <gid>, sig_id <sid>, track <by_src|by_dst>, ip <ip|subnet> | |
15 | # | |
f3fea60b | 16 | # The options are documented at https://suricata.readthedocs.io/en/latest/configuration/global-thresholds.html |
af7f4b34 VJ |
17 | # |
18 | # Please note that thresholding can also be set inside a signature. The interaction between rule based thresholds | |
19 | # and global thresholds is documented here: | |
f3fea60b | 20 | # https://suricata.readthedocs.io/en/latest/configuration/global-thresholds.html#global-thresholds-vs-rule-thresholds |
95cd8bf6 EL |
21 | |
22 | # Limit to 10 alerts every 10 seconds for each source host | |
23 | #threshold gen_id 0, sig_id 0, type threshold, track by_src, count 10, seconds 10 | |
24 | ||
25 | # Limit to 1 alert every 10 seconds for signature with sid 2404000 | |
26 | #threshold gen_id 1, sig_id 2404000, type threshold, track by_dst, count 1, seconds 10 | |
27 | ||
28 | # Avoid to alert on f-secure update | |
2e8678a5 | 29 | # Example taken from https://blog.inliniac.net/2012/03/07/f-secure-av-updates-and-suricata-ips/ |
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30 | #suppress gen_id 1, sig_id 2009557, track by_src, ip 217.110.97.128/25 |
31 | #suppress gen_id 1, sig_id 2012086, track by_src, ip 217.110.97.128/25 | |
32 | #suppress gen_id 1, sig_id 2003614, track by_src, ip 217.110.97.128/25 |