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https://bro-tracker.atlassian.net/browse/BIT-1521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=23824#comment-23824
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Justin Azoff edited comment on BIT-1521 at 1/14/16 10:17 AM:
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Gah. It looks like coming up with a test case for this will be a pain. The
existing pcap doesn't get detected as gridftp-data since the transfer size is
too small:
{code}
jazoff@Justins-MacBook-Air /tmp/b $ bro -r
~/src/bro/testing/btest//Traces/globus-url-copy.trace local
base/protocols/ftp/gridftp 'Known::service_tracking=ALL_HOSTS'
WARNING: No Site::local_nets have been defined. It's usually a good idea to
define your local networks.
20000, 1
jazoff@Justins-MacBook-Air /tmp/b $ cat conn.log |bro-cut id.orig_h id.orig_p
id.resp_h id.resp_p service
192.168.57.103 60108 192.168.57.101 2811 ssl,gridftp,ftp
192.168.57.103 35391 192.168.57.101 55968 ssl
jazoff@Justins-MacBook-Air /tmp/b $ cat known_services.log |bro-cut host
port_num service
192.168.57.101 2811 FTP
192.168.57.101 55968 SSL
{code}
Filtering the ephemeral ssl service running on port 55968 is what I am trying
to accomplish here.
was (Author: jazoff):
Gah. It looks like coming up with a test case for this will be a pain. The
existing pcap doesn't get detected as gridftp-data since the transfer size is
too small:
{code}
jazoff@Justins-MacBook-Air /tmp/b $ bro -r
~/src/bro/testing/btest//Traces/globus-url-copy.trace local
base/protocols/ftp/gridftp 'Known::service_tracking=ALL_HOSTS'
WARNING: No Site::local_nets have been defined. It's usually a good idea to
define your local networks.
20000, 1
jazoff@Justins-MacBook-Air /tmp/b $ cat conn.log |bro-cut id.orig_h id.orig_p
id.resp_h id.resp_p service
192.168.57.103 60108 192.168.57.101 2811 ssl,gridftp,ftp
192.168.57.103 35391 192.1
68.57.101 55968 ssl
jazoff@Justins-MacBook-Air /tmp/b $ cat known_services.log |bro-cut host
port_num service
192.168.57.101 2811 FTP
192.168.57.101 55968 SSL
{code}
Filtering the ephemeral ssl service running on port 55968 is what I am trying
to accomplish here.
> known services should probably ignore gridftp-data
> --------------------------------------------------
>
> Key: BIT-1521
> URL: https://bro-tracker.atlassian.net/browse/BIT-1521
> Project: Bro Issue Tracker
> Issue Type: Improvement
> Components: Bro
> Affects Versions: 2.4
> Reporter: Justin Azoff
> Assignee: Justin Azoff
> Priority: Low
>
> known services script does
> {code}
> if ( ! addr_matches_host(id$resp_h, service_tracking) ||
> "ftp-data" in c$service || # don't include ftp data sessions
> ("DNS" in c$service && c$resp$size == 0) ) # for dns, require
> that the server talks.
> return;
> {code}
> but should probably also ignore gridftp-data. Probably a good idea to add a
> set of services that behave like ftp for it to check.
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