* origin/topic/johanna/tls-more-data:
Update NEWS for ssl changes.
SSL: test updates for record_layer version
Final touches to SSL events with record layer version.
Introduce ssl_plaintext_data event.
Add record layer version to event ssl_encrypted_data.
Add compression methods to ssl_client_hello event.
* origin/topic/jsiwek/empty-lines:
Add 'smtp_excessive_pending_cmds' weird
Fix SMTP command string comparisons
Improve handling of empty lines in several text protocol analyzers
Add rate-limiting sampling mechanism for weird events
Teach timestamp canonifier about timestamps before ~2001
* origin/topic/dnthayer/doc-fixes-for-2.6:
Fix some typos and improve formatting in NEWS
Update the operators documentation
Replace references to libgeoip in the documentation
Update install instructions for python-ipaddress
Update documentation of "option" and "redef" declarations
Improvements to the config framework documentation
Rearrange some lines on the "Log Files" documentation page
Improve install/setup instructions for libmaxminddb
Update NEWS for config framework clusterization changes
Update config framework doc for clusterization changes
Fix typos and formatting issues in config framework docs
* origin/topic/vladg/dhcp_event_deprecation:
Add script to support the old DHCP events
Updated coverage tests and fixed incorrect DHCP:: scoping on some things
The generation of weird events, by default, are now rate-limited
according to these tunable options:
- Weird::sampling_whitelist
- Weird::sampling_threshold
- Weird::sampling_rate
- Weird::sampling_duration
The new get_reporter_stats() BIF also allows one to query the
total number of weirds generated (pre-sampling) which the new
policy/misc/weird-stats.bro script uses periodically to populate
a weird_stats.log.
There's also new reporter BIFs to allow generating weirds from the
script-layer such that they go through the same, internal
rate-limiting/sampling mechanisms:
- Reporter::conn_weird
- Reporter::flow_weird
- Reporter::net_weird
Some of the code was adapted from previous work by Johanna Amann.
This is a fairly straightforward change. Previously, users had no
control over whether this script was loaded. By relocating it to
policy, users can now choose whether or not this is necessary
functionality without modifying core Bro scripts.
* origin/topic/seth/dhcp-update:
Rework to the DHCP analyzer.
First step of DHCP analyzer rearchitecture.
Add .btest scripts for dhck_ack and dhcp_discover messages verifying that new options are correctly reported in dhcp.log records.
Extend DHCP protocol analyzer with new options.
BIT-1924 #merged
Additional changes:
* Removed known-hosts.bro as the only thing populating its table was
the already-removed known-hosts-and-devices.bro. So a
known_devices.log will no longer be generated.
* In dhcp-options.pac, the process_relay_agent_inf_option had a memleak
and also process_auto_proxy_config_option looked like it accessed one
byte past the end of the available bytestring, so fixed those.
* origin/topic/seth/smb-pending-fix:
Updating the defined SMB2 dialects to match Microsofts current docs.
On rare occasions the server doesn't return the tree id on read responses.
Fix an issue with pending commands.
BIT-1862 #merged
This tracks the tree id given by the request
This also addresses BIT-1862 with code submitted by Stefano Rinaldi
and took some hints from his changes in other areas of the code.
Highlights:
- Reduced all DHCP events into a single dhcp_message event. (removed legacy events since they weren't widely used anyway)
- Support many more DHCP options.
- DHCP log is completely reworked and now represents DHCP sessions
based on the transaction ID (and works on clusters).
- Removed the known-devices-and-hostnames script since it's generally
less relevant now with the updated log.
