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AIDE - Advanced Intrusion Detection Environment
This file is free software; as a special exception the author gives
unlimited permission to copy and/or distribute it, with or without
modifications, as long as this notice is preserved.
This file is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY, to the extend permitted by law; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
AIDE is a tool for monitoring file system changes. It can be used
to detect unauthorized monitored files and directories. AIDE was
written to be a simple and free alternative to Tripwire. Features
currently included in AIDE are as follows:
o File attributes monitored: perissions, inode, user, group
file size, mtime, atime, ctime, links and growing size.
o Checksums and hashes supported: SHA1, MD5, RMD160, and TIGER.
CRC32, HAVAL and GOST if Mhash support is compiled in.
o Plain text configuration files and database for simplicity.
o Rules, variables and macros that can be customized to local
site or system policies.
o Powerful regular expression support to selectively include or
exclude files and directories to be monitored.
o gzip database compression if zlib support is compiled in.
o Stand alone static binary for easy client/server monitoring
o Free software licensed under the GNU General Public License.
AIDE is currently maintained on the SourceForge. Details of the
latest version of AIDE can be found on the server project page under
The documentation for AIDE can be found in the doc/ directory. The
most up-to-date documentation an be found on the SourceForge project
For generic instructions please see the INSTALL file.
For AIX 5.1 or 5.2 it is reported you need to use --with-gnu-regexp
when configuring AIDE.
For AIX 5.3 it has been reported there is a problem with using mhash
which causes an "Undefined symbol: .rpl_malloc" error. This is a problem
in mhash_config.h which can be fixed by removing the line that reads
#define malloc rpl_malloc
For Mac OS X Darwin/Leopard (10.4/10.5) you need to use --disable-static
when configuring AIDE. Please note that dynamic linking introduces a
security risk and is not recommended.
For Mac OS Leopard (10.5) you also need to use --disable-lfs because it
handles 64 bit file support out of the box.
Source Code Verification
We highly recommend checking that the version of AIDE downloaded and
install is an original and unmodified one. You have two options to
verify the source code; PGP and md5 has. PGP verification is the
a) To check the supplied signature with GnuPG:
$ gpg --verify aide-0.11.tar.gz.asc
This checks that the detached signature file is indeed a signature
of aide-0.11.tar.gz. The key used to create this signature is:
pub 1024D/5930D198 2005-10-04 [expires: 2007-01-01]
Aide Developers <email@example.com>
If you do not have this key, you can get it from the SourceForge
web site or from one of the well known PGP key servers. You have
to make sure that the key you install is not a faked one. You can
do this with reasonable assurance by comparing the output of:
gpg --fingerprint 0x5930D198
with the fingerprint published elsewhere.
b) To check the supplied MD5 hash signature, you can use the md5sum
program that is supplied with many *NIX systems.
$ md5sum aide-0.10.tar.gz
This should yield output that matches the published MD5 hash:
Or use the openssl package to verify the MD5 hash:
$ openssl md5 aide-0.10.tar.gz
AIDE requires the following development tools:
o C compiler (such as Gcc).
o GNU flex.
o GNU yacc (bison).
o GNU make.
o Mhash (optional, but highly recommended). Mhash is currently
available from http://mhash.sourceforge.net/. A static version of
libmhash needs to be build using the --enable-static=yes
Aide requires at least mhash version 0.9.2
flex version 2.5.31 is broken, you might see the following error
conf_lex.c: In function `conflex':
conf_lex.c:4728: error: `yy_prev_more_offset' undeclared (first use in
conf_lex.c:4728: error: (Each undeclared identifier is reported only once
conf_lex.c:4728: error: for each function it appears in.)
Either downgrade to flex 2.5.4 or get an updated version that fixes
this bug. See also:
Large File Support
To be able to store the size of files larger than 2GB, aide needs
large file support (LFS) to be available in the OS. The configure
script automatically checks for the correct defines and functions.
If configure fails, and during compile time you see errors containing
the number 64, try configure again with the --disable-lfs option.
This turns off the large file support.
When cross compiling, manually verify the data types defines in config.h
as they cannot be accurately determined by configure. Most notably,
AIDE_INO_TYPE will be set to "cross".
Feedback and Support
End user support is available on the AIDE mailing list. To subscribe,
send a message to firstname.lastname@example.org with an empty Subject: line and
the following text as the BODY of the message:
An archive for the mailing list archive is available online:
To report bugs, contribute patches and contact the current team of
developers, visit the SourceForge project web site for additional info:
Please see the AUTHORS file.