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freebsd/contrib/bind9/README
Erwin Lansing cfd4d2c42e Update to 9.8.4-P1. 
Security Fixes

   Prevents named from aborting with a require assertion failure
   on servers with DNS64 enabled.  These crashes might occur as a
   result of  specific queries that are received.

New Features

*  Elliptic Curve Digital Signature Algorithm keys and signatures in
   DNSSEC are now supported per RFC 6605. [RT #21918]

Feature Changes

*  Improves OpenSSL error logging [RT #29932]

*  nslookup now returns a nonzero exit code when it is unable to get
   an answer.  [RT #29492]

Other critical bug fixes are included.

Approved by:	delphij (mentor)
MFC after:	3 days
Security:	CVE-2012-5688
Sponsored by:	DK Hostmaster A/S
2012-12-07 12:39:58 +00:00

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BIND 9
BIND version 9 is a major rewrite of nearly all aspects of the
underlying BIND architecture. Some of the important features of
BIND 9 are:
- DNS Security
DNSSEC (signed zones)
TSIG (signed DNS requests)
- IP version 6
Answers DNS queries on IPv6 sockets
IPv6 resource records (AAAA)
Experimental IPv6 Resolver Library
- DNS Protocol Enhancements
IXFR, DDNS, Notify, EDNS0
Improved standards conformance
- Views
One server process can provide multiple "views" of
the DNS namespace, e.g. an "inside" view to certain
clients, and an "outside" view to others.
- Multiprocessor Support
- Improved Portability Architecture
BIND version 9 development has been underwritten by the following
organizations:
Sun Microsystems, Inc.
Hewlett Packard
Compaq Computer Corporation
IBM
Process Software Corporation
Silicon Graphics, Inc.
Network Associates, Inc.
U.S. Defense Information Systems Agency
USENIX Association
Stichting NLnet - NLnet Foundation
Nominum, Inc.
For a summary of functional enhancements in previous
releases, see the HISTORY file.
For a detailed list of user-visible changes from
previous releases, see the CHANGES file.
For up-to-date release notes and errata, see
http://www.isc.org/software/bind9/releasenotes
BIND 9.8.4
BIND 9.8.4 includes several bug fixes and patches security
flaws described in CVE-2012-1667, CVE-2012-3817 and CVE-2012-4244.
BIND 9.8.3
BIND 9.8.3 is a maintenance release.
BIND 9.8.2
BIND 9.8.2 includes a number of bug fixes and prevents a security
problem described in CVE-2011-4313
BIND 9.8.1
BIND 9.8.1 includes a number of bug fixes and enhancements from
BIND 9.8 and earlier releases. New features include:
- The DLZ "dlopen" driver is now built by default.
- Added a new include file with function typedefs
for the DLZ "dlopen" driver.
- Made "--with-gssapi" default.
- More verbose error reporting from DLZ LDAP.
BIND 9.8.0
BIND 9.8.0 includes a number of changes from BIND 9.7 and earlier
releases. New features include:
- Built-in trust anchor for the root zone, which can be
switched on via "dnssec-validation auto;"
- Support for DNS64.
- Support for response policy zones (RPZ).
- Support for writable DLZ zones.
- Improved ease of configuration of GSS/TSIG for
interoperability with Active Directory
- Support for GOST signing algorithm for DNSSEC.
- Removed RTT Banding from server selection algorithm.
- New "static-stub" zone type.
- Allow configuration of resolver timeouts via
"resolver-query-timeout" option.
BIND 9.7.0
BIND 9.7.0 includes a number of changes from BIND 9.6 and earlier
releases. Most are intended to simplify DNSSEC configuration.
New features include:
- Fully automatic signing of zones by "named".
- Simplified configuration of DNSSEC Lookaside Validation (DLV).
- Simplified configuration of Dynamic DNS, using the "ddns-confgen"
command line tool or the "local" update-policy option. (As a side
effect, this also makes it easier to configure automatic zone
re-signing.)
- New named option "attach-cache" that allows multiple views to
share a single cache.
- DNS rebinding attack prevention.
- New default values for dnssec-keygen parameters.
- Support for RFC 5011 automated trust anchor maintenance
- Smart signing: simplified tools for zone signing and key
maintenance.
- The "statistics-channels" option is now available on Windows.
- A new DNSSEC-aware libdns API for use by non-BIND9 applications
- On some platforms, named and other binaries can now print out
a stack backtrace on assertion failure, to aid in debugging.
- A "tools only" installation mode on Windows, which only installs
dig, host, nslookup and nsupdate.
- Improved PKCS#11 support, including Keyper support and explicit
OpenSSL engine selection.
Known issues in this release:
- In rare cases, DNSSEC validation can leak memory. When this
happens, it will cause an assertion failure when named exits,
but is otherwise harmless. A fix exists, but was too late for
this release; it will be included in BIND 9.7.1.
Compatibility notes:
- If you had built BIND 9.6 with any of ALLOW_NSEC3PARAM_UPDATE,
ALLOW_SECURE_TO_INSECURE or ALLOW_INSECURE_TO_SECURE defined, then
you should ensure that all changes that are in progress have
completed prior to upgrading to BIND 9.7. BIND 9.7 implements
those features in a way which is not backwards compatible.
- Prior releases had a bug which caused HMAC-SHA* keys with long
secrets to be used incorrectly. Fixing this bug means that older
versions of BIND 9 may fail to interoperate with this version
when using TSIG keys. If this occurs, the new "isc-hmac-fixup"
tool will convert a key with a long secret into a form that works
correctly with all versions of BIND 9. See the "isc-hmac-fixup"
man page for additional details.
- Revoking a DNSSEC key with "dnssec-revoke" changes its key ID.
It is possible for the new key ID to collide with that of a
different key. Newly generated keys will not have this problem,
as "dnssec-keygen" looks for potential collisions before
generating keys, but exercise caution if using key revokation
with keys that were generated by older versions of BIND 9. See
the Administrator's Reference Manual, section 4.10 ("Dynamic
Trust Anchor Management") for more details.
- A bug was fixed in which a key's scheduled inactivity date was
stored incorectly. Users who participated in the 9.7.0 BETA test
and had DNSSEC keys with scheduled inactivity dates will need to
reset those keys' dates using "dnssec-settime -I".
Building
BIND 9 currently requires a UNIX system with an ANSI C compiler,
basic POSIX support, and a 64 bit integer type.
We've had successful builds and tests on the following systems:
COMPAQ Tru64 UNIX 5.1B
Fedora Core 6
FreeBSD 4.10, 5.2.1, 6.2
HP-UX 11.11
Mac OS X 10.5
NetBSD 3.x, 4.0-beta, 5.0-beta
OpenBSD 3.3 and up
Solaris 8, 9, 9 (x86), 10
Ubuntu 7.04, 7.10
Windows XP/2003/2008
NOTE: As of BIND 9.5.1, 9.4.3, and 9.3.6, older versions of
Windows, including Windows NT and Windows 2000, are no longer
supported.
We have recent reports from the user community that a supported
version of BIND will build and run on the following systems:
AIX 4.3, 5L
CentOS 4, 4.5, 5
Darwin 9.0.0d1/ARM
Debian 4
Fedora Core 5, 7
FreeBSD 6.1
HP-UX 11.23 PA
MacOS X 10.4, 10.5
Red Hat Enterprise Linux 4, 5
SCO OpenServer 5.0.6
Slackware 9, 10
SuSE 9, 10
To build, just
./configure
make
Do not use a parallel "make".
Several environment variables that can be set before running
configure will affect compilation:
CC
The C compiler to use. configure tries to figure
out the right one for supported systems.
CFLAGS
C compiler flags. Defaults to include -g and/or -O2
as supported by the compiler.
STD_CINCLUDES
System header file directories. Can be used to specify
where add-on thread or IPv6 support is, for example.
Defaults to empty string.
STD_CDEFINES
Any additional preprocessor symbols you want defined.
Defaults to empty string.
Possible settings:
Change the default syslog facility of named/lwresd.
-DISC_FACILITY=LOG_LOCAL0
Enable DNSSEC signature chasing support in dig.
-DDIG_SIGCHASE=1 (sets -DDIG_SIGCHASE_TD=1 and
-DDIG_SIGCHASE_BU=1)
Disable dropping queries from particular well known ports.
-DNS_CLIENT_DROPPORT=0
Sibling glue checking in named-checkzone is enabled by default.
To disable the default check set. -DCHECK_SIBLING=0
named-checkzone checks out-of-zone addresses by default.
To disable this default set. -DCHECK_LOCAL=0
To create the default pid files in ${localstatedir}/run rather
than ${localstatedir}/run/{named,lwresd}/ set.
-DNS_RUN_PID_DIR=0
Enable workaround for Solaris kernel bug about /dev/poll
-DISC_SOCKET_USE_POLLWATCH=1
The watch timeout is also configurable, e.g.,
-DISC_SOCKET_POLLWATCH_TIMEOUT=20
LDFLAGS
Linker flags. Defaults to empty string.
The following need to be set when cross compiling.
BUILD_CC
The native C compiler.
BUILD_CFLAGS (optional)
BUILD_CPPFLAGS (optional)
Possible Settings:
-DNEED_OPTARG=1 (optarg is not declared in <unistd.h>)
BUILD_LDFLAGS (optional)
BUILD_LIBS (optional)
To build shared libraries, specify "--with-libtool" on the
configure command line.
For the server to support DNSSEC, you need to build it
with crypto support. You must have OpenSSL 0.9.5a
or newer installed and specify "--with-openssl" on the
configure command line. If OpenSSL is installed under
a nonstandard prefix, you can tell configure where to
look for it using "--with-openssl=/prefix".
On some platforms it is necessary to explictly request large
file support to handle files bigger than 2GB. This can be
done by "--enable-largefile" on the configure command line.
On some platforms, BIND 9 can be built with multithreading
support, allowing it to take advantage of multiple CPUs.
You can specify whether to build a multithreaded BIND 9
by specifying "--enable-threads" or "--disable-threads"
on the configure command line. The default is operating
system dependent.
Support for the "fixed" rrset-order option can be enabled
or disabled by specifying "--enable-fixed-rrset" or
"--disable-fixed-rrset" on the configure command line.
The default is "disabled", to reduce memory footprint.
If your operating system has integrated support for IPv6, it
will be used automatically. If you have installed KAME IPv6
separately, use "--with-kame[=PATH]" to specify its location.
"make install" will install "named" and the various BIND 9 libraries.
By default, installation is into /usr/local, but this can be changed
with the "--prefix" option when running "configure".
You may specify the option "--sysconfdir" to set the directory
where configuration files like "named.conf" go by default,
and "--localstatedir" to set the default parent directory
of "run/named.pid". For backwards compatibility with BIND 8,
--sysconfdir defaults to "/etc" and --localstatedir defaults to
"/var" if no --prefix option is given. If there is a --prefix
option, sysconfdir defaults to "$prefix/etc" and localstatedir
defaults to "$prefix/var".
To see additional configure options, run "configure --help".
Note that the help message does not reflect the BIND 8
compatibility defaults for sysconfdir and localstatedir.
If you're planning on making changes to the BIND 9 source, you
should also "make depend". If you're using Emacs, you might find
"make tags" helpful.
If you need to re-run configure please run "make distclean" first.
This will ensure that all the option changes take.
Building with gcc is not supported, unless gcc is the vendor's usual
compiler (e.g. the various BSD systems, Linux).
Known compiler issues:
* gcc-3.2.1 and gcc-3.1.1 is known to cause problems with solaris-x86.
* gcc prior to gcc-3.2.3 ultrasparc generates incorrect code at -02.
* gcc-3.3.5 powerpc generates incorrect code at -02.
* Irix, MipsPRO 7.4.1m is known to cause problems.
A limited test suite can be run with "make test". Many of
the tests require you to configure a set of virtual IP addresses
on your system, and some require Perl; see bin/tests/system/README
for details.
SunOS 4 requires "printf" to be installed to make the shared
libraries. sh-utils-1.16 provides a "printf" which compiles
on SunOS 4.
Documentation
The BIND 9 Administrator Reference Manual is included with the
source distribution in DocBook XML and HTML format, in the
doc/arm directory.
Some of the programs in the BIND 9 distribution have man pages
in their directories. In particular, the command line
options of "named" are documented in /bin/named/named.8.
There is now also a set of man pages for the lwres library.
If you are upgrading from BIND 8, please read the migration
notes in doc/misc/migration. If you are upgrading from
BIND 4, read doc/misc/migration-4to9.
Frequently asked questions and their answers can be found in
FAQ.
Additional information on various subjects can be found
in the other README files.
Change Log
A detailed list of all changes to BIND 9 is included in the
file CHANGES, with the most recent changes listed first.
Change notes include tags indicating the category of the
change that was made; these categories are:
[func] New feature
[bug] General bug fix
[security] Fix for a significant security flaw
[experimental] Used for new features when the syntax
or other aspects of the design are still
in flux and may change
[port] Portability enhancement
[maint] Updates to built-in data such as root
server addresses and keys
[tuning] Changes to built-in configuration defaults
and constants to improve performanceo
[protocol] Updates to the DNS protocol such as new
RR types
[test] Changes to the automatic tests, not
affecting server functionality
[cleanup] Minor corrections and refactoring
[doc] Documentation
In general, [func] and [experimental] tags will only appear
in new-feature releases (i.e., those with version numbers
ending in zero). Some new functionality may be backported to
older releases on a case-by-case basis. All other change
types may be applied to all currently-supported releases.
Bug Reports and Mailing Lists
Bugs reports should be sent to
bind9-bugs@isc.org
To join the BIND Users mailing list, send mail to
bind-users-request@isc.org
archives of which can be found via
http://www.isc.org/ops/lists/
If you're planning on making changes to the BIND 9 source
code, you might want to join the BIND Workers mailing list.
Send mail to
bind-workers-request@isc.org
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