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24 lines
741 B
Text
24 lines
741 B
Text
##! Provides an example of using the metrics framework to collect the number
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##! of times a specific server name indicator value is seen in SSL session
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##! establishments. Names ending in google.com are being filtered out as an
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##! example of the predicate based filtering in metrics filters.
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@load base/frameworks/metrics
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@load base/protocols/ssl
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event bro_init()
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{
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Metrics::add_filter("ssl.by_servername",
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[$name="no-google-ssl-servers",
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$pred(index: Metrics::Index, data: Metrics::DataPoint) = {
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return (/google\.com$/ !in index$str);
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},
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$break_interval=10secs
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]);
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}
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event SSL::log_ssl(rec: SSL::Info)
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{
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if ( rec?$server_name )
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Metrics::add_data("ssl.by_servername", [$str=rec$server_name], [$num=1]);
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}
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