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Update NEWS
Corrected some typos, fixed some reST formatting, and added some more useful info.
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152
NEWS
152
NEWS
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@ -31,26 +31,29 @@ New Functionality
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transferred over SMB can be analyzed.
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- Includes GSSAPI and NTLM analyzer and reimplements the DCE-RPC
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analyzer.
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- New logs: smb_files.log, smb_mapping.log, ntlm.log, and dce_rpc.log
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- New logs: smb_cmd.log, smb_files.log, smb_mapping.log, ntlm.log, and dce_rpc.log
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- Not every possible SMB command or functionality is implemented, but
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generally, file handling should work whenever files are transferred.
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Please speak up on the mailing list if there is an obvious oversight.
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- Bro now includes the NetControl framework. The framework allows for easy
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interaction of Bro with hard- and software switches, firewalls, etc.
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New log files: net_control.log, netcontrol_catch_release.log,
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netcontrol_drop.log, and netcontrol_shunt.log.
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- Bro's Intelligence Framework was refactored and new functionality
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has been added:
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- The framework now supports the new indicator type Intel::SUBNET.
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As subnets are matched against seen addresses, the field 'matched'
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was introduced to indicate which indicator type(s) caused the hit.
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As subnets are matched against seen addresses, the new field 'matched'
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in intel.log was introduced to indicate which indicator type(s) caused
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the hit.
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- The new function remove() allows to delete intelligence items.
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- The intel framework now supports expiration of intelligence items.
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Expiration can be configured by using Intel::item_expiration and
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can be handled by using the item_expired() hook. The new script
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Expiration can be configured using the new Intel::item_expiration constant
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and can be handled by using the item_expired() hook. The new script
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do_expire.bro removes expired items.
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- The new hook extend_match() allows extending the framework. The new
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@ -62,26 +65,23 @@ New Functionality
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- There is a new file entropy analyzer for files.
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- Bro now supports the remote framebuffer protocol (RFB) that is used by
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VNC servers for remote graphical displays.
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VNC servers for remote graphical displays. New log file: rfb.log.
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- Bro now supports the Radiotap header for 802.11 frames.
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- Bro now has rudimentary IMAP and XMPP analyzers examinig the initial
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phases of the protocol. Right now these analyzer only identify
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STARTTLS sessions, handing them over to TLS analysis. The analyzer
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does not yet analyze any further IMAP/XMPP content.
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- Bro now has rudimentary IMAP and XMPP analyzers examining the initial
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phases of the protocol. Right now these analyzers only identify
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STARTTLS sessions, handing them over to TLS analysis. These analyzers
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do not yet analyze any further IMAP/XMPP content.
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- The new event ssl_extension_signature_algorithm allows access to the
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- The new event ssl_extension_signature_algorithm() allows access to the
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TLS signature_algorithms extension that lists client supported signature
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and hash algorithm pairs.
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- Bro now tracks VLAN IDs. To record them inside the connection log,
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load protocols/conn/vlan-logging.bro.
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- The new misc/stats.bro records Bro executions statistics in a
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standard Bro log file.
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- A new dns_CAA_reply event gives access to DNS Certification Authority
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- A new dns_CAA_reply() event gives access to DNS Certification Authority
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Authorization replies.
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- A new per-packet event raw_packet() provides access to layer 2
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@ -93,10 +93,10 @@ New Functionality
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argument that will be used for decoding errors into weird.log
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(instead of reporter.log).
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- A new get_current_packet_header bif returns the headers of the current
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- A new get_current_packet_header() bif returns the headers of the current
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packet.
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- Two new built-in functions for handling set[subnet] and table[subnet]:
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- Three new built-in functions for handling set[subnet] and table[subnet]:
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- check_subnet(subnet, table) checks if a specific subnet is a member
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of a set/table. This is different from the "in" operator, which always
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@ -120,22 +120,25 @@ New Functionality
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- subnet_width(subnet) returns the width of a subnet.
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- The IRC analyzer now recognizes StartTLS sessions and enable the SSL
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- The IRC analyzer now recognizes StartTLS sessions and enables the SSL
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analyzer for them.
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- A set of new built-in function for gathering execution statistics:
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- The misc/stats.bro script is now loaded by default and logs more Bro
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execution statistics to the stats.log file than it did previously.
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- A set of new built-in functions for gathering execution statistics:
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get_net_stats(), get_conn_stats(), get_proc_stats(),
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get_event_stats(), get_reassembler_stats(), get_dns_stats(),
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get_timer_stats(), get_file_analysis_stats(), get_thread_stats(),
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get_gap_stats(), get_matcher_stats(),
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get_gap_stats(), get_matcher_stats()
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- Two new functions haversine_distance() and haversine_distance_ip()
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for calculating geographic distances. They requires that Bro be
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built with libgeoip.
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for calculating geographic distances. The latter function requires that Bro
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be built with libgeoip.
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- Table expiration timeout expressions are evaluated dynamically as
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timestmaps are updated.
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timestamps are updated.
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- The pcap buffer size can be set through the new option Pcap::bufsize.
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@ -144,7 +147,7 @@ New Functionality
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- The logging framework now supports user-defined record separators,
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renaming of column names, as well as extension data columns that can
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be added to specific or all logfiles (e.g., to add noew names).
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be added to specific or all logfiles (e.g., to add new names).
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- The new "bro-config" script can be used to determine the Bro installation
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paths.
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@ -185,7 +188,7 @@ New Functionality
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- pf_ring: Native PF_RING support.
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- postgresql: A PostgreSQL reader/writer.
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- redis: An experimental log writer for Redis.
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- tcprs: An TCP-level analyzer detecting retransmissions, reordering, and more.
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- tcprs: A TCP-level analyzer detecting retransmissions, reordering, and more.
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Changed Functionality
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---------------------
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@ -195,10 +198,14 @@ Changed Functionality
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- Connections
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The 'history' field gains two new flags: '^' indicates that
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Bro heuristically flipped to direction of the connection.
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Bro heuristically flipped the direction of the connection.
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't/T' indicates the first TCP payload retransmission from
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originator or responder, respectively.
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- Intelligence
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New field 'matched' to indicate which indicator type(s) caused the hit.
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- DNS
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New 'rtt' field to indicate the round trip time between when a
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@ -211,42 +218,58 @@ Changed Functionality
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Changes in 'mailfrom' and 'rcptto' fields to remove some
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non-address cruft that will tend to be found. The main
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example is the change from "<user@domain>" to
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"user@domain.com".
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example is the change from ``"<user@domain>"`` to
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``"user@domain.com"``.
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- HTTP
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Removed 'filename' field.
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Removed 'filename' field (which was never filled out in the first
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place).
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New 'orig_filenames' and 'resp_filenames' fields which each
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contain a vector of filenames seen in entities transferred.
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- stats.log
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The following fields have been added: active_tcp_conns,
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active_udp_conns, active_icmp_conns, tcp_conns, udp_conns,
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icmp_conns, timers, active_timers, files, active_files, dns_requests,
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active_dns_requests, reassem_tcp_size, reassem_file_size,
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reassem_frag_size, reassem_unknown_size.
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The following fields have been renamed: lag -> pkt_lag.
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The following fields have been removed: pkts_recv.
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- The BrokerComm and BrokerStore namespaces were renamed to Broker.
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The Broker "print" function was renamed to Broker::send_print, and
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"event" to "Broker::send_event".
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The Broker "print()" function was renamed to Broker::send_print(), and
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the "event()" function was renamed to Broker::send_event().
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- ``SSH::skip_processing_after_detection`` was removed. The functionality was
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replaced by ``SSH::disable_analyzer_after_detection``.
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- The constant ``SSH::skip_processing_after_detection`` was removed. The
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functionality was replaced by the new constant
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``SSH::disable_analyzer_after_detection``.
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- ``net_stats()`` and ``resource_usage()`` have been superseded by the
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new execution statistics functions (see above).
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- The ``net_stats()`` and ``resource_usage()`` functions have been
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removed, and their functionality is now provided by the new execution
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statistics functions (see above).
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- Some script-level identifier have changed their names:
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- Some script-level identifiers have changed their names:
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snaplen -> Pcap::snaplen
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precompile_pcap_filter() -> Pcap::precompile_pcap_filter()
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install_pcap_filter() -> Pcap::install_pcap_filter()
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pcap_error() -> Pcap::pcap_error()
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- In http.log, the "filename" field (which it turns out was never
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filled out in the first place) has been split into to
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"orig_filenames" and "resp_filenames".
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- snaplen -> Pcap::snaplen
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- precompile_pcap_filter() -> Pcap::precompile_pcap_filter()
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- install_pcap_filter() -> Pcap::install_pcap_filter()
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- pcap_error() -> Pcap::error()
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- TCP analysis was changed to process connections without the initial
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SYN packet. In the past, connections without a full handshake were
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treated as partial, meaning that most application-layer analyzers
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would refuse to inspect the payload. Now, Bro will consider these
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connections as complete and all analyzers will process them notmally.
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connections as complete and all analyzers will process them normally.
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- The ``policy/misc/capture-loss.bro`` script is now loaded by default.
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- The traceroute detection script package ``policy/misc/detect-traceroute``
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is no longer loaded by default.
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- Changed BroControl functionality in aux/broctl:
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@ -284,33 +307,34 @@ Changed Functionality
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Removed Functionality
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---------------------
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- The app-stats scripts have been removed because they weren't
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being maintained and they were becoming inaccurate. They
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were also prone to needing more regular updates as the internet
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changed and will likely be more relevant if maintained externally.
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- The app-stats scripts have been removed because they weren't
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being maintained and they were becoming inaccurate (as a result, the
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app_stats.log is also gone). They were also prone to needing more regular
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updates as the internet changed and will likely be more relevant if
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maintained externally.
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- The event ack_above_hole() has been removed, as it was a subset
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of content_gap() and led to plenty noise.
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- The event ack_above_hole() has been removed, as it was a subset
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of content_gap() and led to plenty of noise.
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- The command line options --set-seed and --md5-hashkey have been
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removed.
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- The command line options ``--analyze``, ``--set-seed``, and
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``--md5-hashkey`` have been removed.
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- The packaging scripts pkg/make-\*-packages are gone. They aren't
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used anymore for the binary Bro packages that the projects
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distributes; haven't been supported in a while; and have
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problems.
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- The packaging scripts pkg/make-\*-packages are gone. They aren't
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used anymore for the binary Bro packages that the project
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distributes; haven't been supported in a while; and have
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problems.
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Deprecated Functionality
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------------------------
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- The built-in functions decode_base64_custom() and
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encode_base64_custom() are no longer needed and will be removed
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in the future. Their functionality is now provided directly by
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decode_base64() and encode_base64(), which take an optional
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parameter to change the Base64 alphabet.
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- The built-in functions decode_base64_custom() and
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encode_base64_custom() are no longer needed and will be removed
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in the future. Their functionality is now provided directly by
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decode_base64() and encode_base64(), which take an optional
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parameter to change the Base64 alphabet.
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- The ElasticSearch log writer hasn't been maintained for a while
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and is now deprecated. It will be removed with the next release.
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- The ElasticSearch log writer hasn't been maintained for a while
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and is now deprecated. It will be removed with the next release.
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Bro 2.4
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