AIDE - Advanced Intrusion Detection Environment ------------------------------------------------- Version 0.16 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. Introduction ------------ 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 configurations. o Free software licensed under the GNU General Public License. Current Version --------------- AIDE is currently maintained on the SourceForge. Details of the latest version of AIDE can be found on the server project page under http://sourceforge.net/projects/aide/. Documentation ------------- The documentation for AIDE can be found in the doc/ directory. The most up-to-date documentation an be found on the SourceForge project web site. Installation ------------ For generic instructions please see the INSTALL file. 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) and Solaris 10/OpenSolaris you need to use --disable-static when configuring AIDE. Please note that dynamic linking introduces a security risk and is not recommended. Since 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 installed is an original and unmodified one. You can either verify the source tarball or the git tag. To check the supplied signature with GnuPG: $ gpg --verify aide-<VERSION_NUMBER>.tar.gz.asc This checks that the detached signature file is indeed a signature of aide-<VERSION_NUMBER>.tar.gz. To validate the gpg signature of the git tag: $ git verify-tag v<VERSION_NUMBER> The current public key needed for signature verification is: pub 4096R/68E7B931 2011-06-28 [expires: 2021-06-27] uid Hannes von Haugwitz <email@example.com> If you do not have this key, you can get it 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 0x68E7B931 with the fingerprint published elsewhere. Requirements ------------ AIDE requires the following development tools: o C compiler (such as Gcc). o GNU flex. o GNU yacc (bison). o GNU make. o PCRE library 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 configure option. Aide requires at least mhash version 0.9.2 Note: 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 this function) 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: http://sourceforge.net/tracker/index.php?func=detail&aid=866477&group_id=72099&atid=533377 http://sourceforge.net/mailarchive/message.php?msg_id=5415848 http://sourceforge.net/mailarchive/message.php?msg_id=5561246 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. Cross Compilation ----------------- 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: subscribe aide An archive for the mailing list archive is available online: http://email@example.com/ To report bugs, contribute patches and contact the current team of developers, visit the SourceForge project web site for additional info: http://sourceforge.net/projects/aide/ Credits ------- Please see the AUTHORS file.