zeek/scripts/policy/frameworks/metrics/conn-example.bro

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Text

@load base/frameworks/metrics
@load base/utils/site
redef enum Metrics::ID += {
CONNS_ORIGINATED,
CONNS_RESPONDED
};
event bro_init()
{
Metrics::add_filter(CONNS_ORIGINATED, [$aggregation_mask=24, $break_interval=1mins]);
# Site::local_nets must be defined in order for this to actually do anything.
Metrics::add_filter(CONNS_RESPONDED, [$aggregation_table=Site::local_nets_table, $break_interval=1mins]);
}
event connection_established(c: connection)
{
Metrics::add_data(CONNS_ORIGINATED, [$host=c$id$orig_h], 1);
Metrics::add_data(CONNS_RESPONDED, [$host=c$id$resp_h], 1);
}