NAME
aide.conf - The configuration file for Advanced Intrusion Detection
Environment
SYNOPSIS
aide.conf is the configuration file for Advanced Intrusion
Detection Environment. aide.conf contains the runtime
configuration aide uses to initiailize or check the aide database.
FILE FORMAT
aide.conf is similar in to Tripwire(tm)'s configuration
file. With little effort tw.conf can be converted to aide.conf.
aide.conf is case-sensitive. Leading and trailing whitespaces are
ignored.
There are three types of lines in aide.conf. First there are the
configuration lines which are used to set configuration parameters and
define/undefine variables. Second, there are selection lines that are used
to indicate which files are added to the database. Third, macro lines
define or undefine variables within the config file. Lines beginning
with # are ignored as comments.
CONFIG LINES
These lines have the format parameter=value. See URLS for a list of
valid urls.
"database"
The url from which database is read. There can only be one of these
lines. If there are multiple database lines then the first is used.
The default value is "/usr/local/etc/aide.db".
"database_out"
The url to which the new database is written to. There can only be one
of these lines. If there are multiple database_out lines then the
first is used. The default value is "/usr/local/etc/aide.db.new".
"database_new"
The url from which the other database for --compare is read.
There is no default for this one.
"verbose"
The level of messages that is output. This value can be 0-255
inclusive. This parameter can only be given once. Value from the first
occurence is used. If --verbose or -V is used then the value from that
is used. The default is 5. If verbosity is 20 then additional report
output is written when doing --check, --update or --compare.
"report_url"
The url that the output is written to. There can be multiple instances
of this parameter. Output is written to all of them. The default is
stdout.
"gzip_dbout"
Whether the output to the database is gzipped or not. Valid values are
yes,true,no and false. The default is no. This option is available only
if zlib support is compiled in.
"acl_no_symlink_follow"
Whether to check ACLs for symlinks or not. Valid values are
yes,true,no and false. The default is to follow symlinks. This option
is available only if acl support is compiled in.
"warn_dead_symlinks"
Whether to warn about dead symlinks or not. Valid values are
yes,true,no and false. The default is not to warn about dead symlinks.
"report_attributes"
Special group definition that lists parameters which are always printed
in the final report for changed files.
"ignore_list"
Special group definition that lists parameters which are to be ignored
from the final report.
"config_version"
The value of config_version is printed in the report and also printed
to the database. This is for informational purposes only. It has no
other functionality.
"Group
If the parameter is not one of the previous parameters then it is
regarded as a group definition. Value is then regarded as an
expression. Expression is of the following form.
P
<predefined group>| <expr> + <predefined group>
| <expr> - <predifined group>
See DEFAULT GROUPS for an explanation of default predefined groups.
Note that this is different from the way Tripwire(tm) does it.
There is also a special group named "ignore_list". The predefined
-groups listed in it are NOT displayed in the final report.
SELECTION LINES
aide supports three types of selection lines (regular, negative, equals)
Lines beginning with "/" are regular selection lines. Lines beginning
with "=" are equals selection lines. And lines beginning with "!"
are negative selection lines. The string following the first character
is taken as a regular expression matching to a complete filename,
including the path. In a regular selection rule the "/" is included in the
regular expression. Following the regular expression is a group
definition as explained above. See EXAMPLES and doc/aide.conf for examples.
More in-depth discussion of the selection algorithm can be found in
the aide manual.
MACRO LINES
"@@define
Define variable VAR to value val.
"@@undef
Undefine variable VAR.
"@@ifdef
@@ifdef begins an if statement. It must be terminated with an @@endif
statement. The lines between @@ifdef and @@endif are used if variable
VAR is defined. If there is an @@else statement then the part
between @@ifdef and @@else is used is VAR is defined otherwise
the part between @@else and @@endif is used. @@ifndef reverses the
logic of @@ifdef statement but otherwise works similarly.
"@@ifhost
@@ifhost works like @@ifdef only difference is that it checks whether
hostname equals the name of the host that aide is running on.
hostname is the name of the host without the domainname
(hostname, not hostname.aide.org).
"@@{VAR}"
@@{VAR} is replaced with the value of the variable VAR.
If variable VAR is not defined an empty string is used. Unlike
Tripwire(tm) @@VAR is NOT supported. One special VAR is @@{HOSTNAME}
which is substituted for the hostname of the current system.
"@@else"
Begins the else part of an if statement.
"@@endif"
Ends an if statement.
"@@include
Includes the file VAR. The content of the file is used as if it
were inserted in this part of the config file.
URLS
Urls can be one of the following. Input urls cannot be used as outputs
and vice versa.
"stdout"
"stderr"
Output is sent to stdout,stderr respectively.
"stdin"
Input is read from stdin.
"file://filename"
Input is read from filename or output is written to
filename.
"fd:number"
Input is read from filedescriptor number or output is written to
number.
DEFAULT GROUPS
"p:
"i:
"l:
"n:
"u:
"g:
"s:
"m:
"a:
"c:
"S:
"I:
"ANF:
"ARF:
"md5:
"sha1:
"sha256:
"sha512:
"rmd160:
"tiger:
"haval:
"crc32:
"R:
"L:
"E:
">:
"And
"gost:
"whirlpool:
"The
"acl:
"selinux:
"xattr:
Please note that 'I' and 'c' are incompatible. When the name of a file
is changed, it's ctime is updated as well. When you put 'c' and 'I' in
the same rule the, a changed ctime is silently ignored.
When 'ANF' is used, new files are added to the new database, but are
ignored in the report.
When 'ARF' is used, files missing on disk are omitted from the new database,
but are ignored in the report.
EXAMPLES
/ R
This adds all files on your machine to the database. This is one line
is a fully qualified configuration file.
!/dev
This ignores the /dev directory structure.
=/tmp
Only /tmp is taken into the database. None of its children are added.
P
All=p+i+n+u+g+s+m+c+a+md5+sha1+tiger+rmd160
This line defines group All. It has all attributes and all
md checksum functions. If you absolutely want all digest functions
then you should enable mhash support and add
+crc32+haval+gost to the end of the definition for
All. Mhash support can only be enabled at compile-time.
HINTS
=/foo p+i+l+n+u+g+s+m+c+md5
/foo/bar p+i+l+n+u+g+s+m+c+md5
This config adds all files under /foo because they match to regex /foo,
which is equivalent to /foo.* . What you probably want is:
P
=/foo$ p+i+l+n+u+g+s+m+c+md5
/foo/bar p+i+l+n+u+g+s+m+c+md5
Note that the following still works as expected because =/foo$ stop
recuring of directory /foo.
=/foo p+i+l+n+u+g+s+m+c+md5
In the following, the first is not allowed in AIDE. Use the latter instead.
/foo epug
P
/foo e+p+u+g
SEE ALSO
aide(1)
R http://www.cs.tut.fi/~rammer/aide/manual.html
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