2014/09/12 Duane Wessels
Added 'new-gtlds' filter, which includes only queries for names
ending with one of the new (2013/2014) generic TLDs. This may
be useful to find hosts/servers using internal names which may
collide with new gTLDs once they become active. If you use
short (not fully qualified) names internally you may be uknownlying
relying on root (or other) name servers to return NXDOMAIN for
them. If so, "you're gonna have a bad time."
Along with this new feature, TLD lists are now hashed in the
code for faster lookups.
2012/11/30 Duane Wessels
Added more entries to the table of known query type names (HINFO,
AFSDB, PX, SSHFP, NSEC3, NSEC3PARAM, TLSA, DLV).
2012/10/15 Duane Wessels
The 'refused' filter only works on responses, which are not
processed by default. Now, if the 'refused' filter is specified,
dnstop will automatically process responses and ignore queries.
2012/06/11 Duane Wessels
Added "qtype-any" filter for displaying ANY queries which are
now fashionable in DNS based attacks.
2011/05/02 Duane Wessels
Anand Buddhev pointed out that LDFLAGS= is missing from Makefile.in.
Also updated known_tlds.h.
2011/01/27 Duane Wessels
Fixed some portability bugs (OpenBSD, gmake 3.82) and other
minor bugs.
Added a feature (-n option) to restrict counting to a given
query name.
2011/01/05 Duane Wessels
Found a fixed a few problems after spending some quality time
looking at the code.
1) Hash table performance was terrible and has been improved.
The hash table size is now configurable via command line
option.
2) Some things were double-counted when both -Q and -R were
given.
3) Added cumulative percentage totals to the tables
4) Added -X option to disable the source+queryname tables, which
could consume a lot of memory.
5) Imported "inX_addr" mini-library for storing IPv4/IPv6
addresses.
2010/12/27 Duane Wessels
Fixed a bug where if stdout was a TTY but stdin was not a TTY,
then dnstop would enter a loop on keyboard input and consume
100% CPU. Now it checks that stdin is a TTY as well.
2009/01/28 Duane Wessels
Added "refused" filter to show only responses that were refused.
2008/03/21 Duane Wessels
Added some standard Makefile variables that could be locally
modified by package maintainers.
Added -v (version) command line option.
Updated list of known TLDs.
2008/03/20 Dave Plonka
Fixed a bug that cause dnstop to Memory fault when processing
a DNS packet greater than PCAP_SNAPLEN (previously 1460) bytes
in size.
Raised PCAP_SNAPLEN to 65535 to avoid truncating large DNS
packets.
Eliminated unnecessary stack buffers and memcpy calls when
handling packets.
2007/05/10 Duane Wessels
Replaced unlicensed "SuperFastHash" with public domain
"lookup3.c" by Bob Jenkins, from
http://www.burtleburtle.net/bob/c/lookup3.c
2007/03/02 Duane Wessels
Added Rcode table
2007/02/20 Duane Wessels
Internal redesign. Removed the data structures for storing
1st, 2nd, and 3rd level query name stats and replaced them with
an array supporting collection of up to 9 domain components.
Replaced the -2 and -3 command line options with -l N where N
is a number from 1 to 9. Higher values of N give more details
but also use more memory and CPU.
Rewrote the display code. Columns are now sized automatically
depending on the width of the values being displayed, and the
maximum width of the terminal.
2007/02/20 Duane Wessels
Bugfix: The combined "sources + queryname" tables were counting
incorrectly due to the use of in_addr_cmp() in the hash table
comparison function. We no longer store IP addresses as struct
in_addr. We store them as IPv6 addresses and the comparison function
always returned 0 for v4 addrs.
2007/02/19 Florian Forster
Arithmetic on void pointers is not well defined and Solaris
complains. Cast to char pointer instead.
2007/02/19 Dirk Jagdmann
Added USE_IP6 define so that v6-code can be disabled somewhat
easily.
2007/02/19 Florian Forster
Portability fixes for IPv6-related code as well as some Solaris
and Linux quirks.
2007/02/19 Duane Wessels
Updated rfc1035NameUnpack() and fixed a buffer overflow bug.
2007/02/19 Tom moof Spindler
There's two more occurences of c99ish "declare local vars in
the middle of a block".
2007/01/05 Misc Bugfixes
Some variables were declared in the middle of functions. GCC
tolerates this, but other compilers (Solaris) do not.
Bug in switch statement. break was before return (Bill Richter).
Added checks for "__GLIBC__" and "__GNU__" preprocessor symbols
for Linux compatibility (Petr Salinger).
2006/12/01 Florian Forster and Duane Wessels
Incorporated Florian's patch to support IPv6. Both v4 and v6
addresses are now stored in an in6_addr structure, which means
increased memory usage. The old default bpf program ("udp dst
port 53 and udp[10:2] & 0x8000 = 0") didn't work on IPv6 packets,
so it is now just "udp port 53".
Added -Q and -R command line options to select counting of
queries, replies, or both. The default is to count only queries.
Added -4 and -6 command line options to select counting of
IPv4-addressed messages, IPv6-addressed messages, or both. The
default is to count both.
2006/11/21 Duane Wessels
Changed most of the linked lists to hash tables. This should
also result in less CPU usage on busy nameservers.
2006/11/20 John Morrissey
A patch to use setitimer and SIGALRM for updating the display.
On busy nameservers this results in less CPU usage because
the display is updated less often. The redraw interval can
be specified with the -r command line option.
2006/05/17 Max Horn
A few fixes for OS X.
1) select()ing on a pcap FD doesn't always work. Advice from
tcpdump mailing list archive is to put it into non-blocking
mode and ignore the select() return value.
2) Added $(LDFLAGS) to link command line in Makefile to have
dnstop linked with specific libraries. LDFLAGS will be
picked up from the environment.
3) OS X needs to #include <arpa/nameser_compat.h>
2006/04/24 Duane Wessels
Adriaan Peeters reported that the list of known TLDs is
out-of-date. In particular, the .EU domain is not in the list.
2005/04/05 Duane Wessels
Mark Foster found a bug with the source+SLD list. It was being
updated for 3RD-level domain names as well. Mark also suggested
that the '@' key should display the source+SLD screen, just as
'3' and '#' work for 3RD-level.
2005/01/21 Sam Norris
Added support for third-level domain statistics. Use the -t
command line option to enable collection of 3rd-level stats,
and use '3' while running to display them. Note that enabling
3rd-level stats collection does not automatically also enable
2nd-level stats.
2005/01/13 Duane Wessels
Added a non-interactive mode. If you specify a savefile and
stdout is not a TTY, dnstop prints each table at the end.
2004/03/09 Duane Wessels
Added filter support. Filters can be used to restrict the input
stream to queries with certain characteristics. The currently
defined filters are:
unknown-tlds Only includes queries for TLDs that are
bogus. Useful for identifying hosts/servers
that leak queries for things like "localhost"
or "workgroup."
A-for-A Only includes A queries for names that are
already IP addresses. Certain Microsoft
Windows DNS servers have a known bug that
forward these queries.
rfc1918-ptr PTR queries for addresses in RFC1918 space.
These should never leak from inside an
organization.
2003/11/13 Mark Foster <mark@foster.cc>
Added 'c' to display options. This screen will combine the
source and sld fields to show "who is querying for what" -
reason: we see alot of duplicate querys for whatever reason.
This will help separate the legitimate queries from the broken
resolvers, etc. See http://www.circleid.com/article/102_0_1_0_C/
for more about that.
