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Full Discussion: Log Review- SU
Special Forums Cybersecurity Log Review- SU Post 302955837 by rbatte1 on Tuesday 22nd of September 2015 07:16:22 AM
Old 09-22-2015
Our policy is that every use of su or sudo has to be explained. Just collecting the records and challenging is a good start, however I added something in to /etc/profile that tries to log all the commands too. There are certainly some flaws with it and it depends on people doing su - or su - username to run the profile and therefore be effective, but that has always been the habit here, so I got away with that.

There were various other application specific things embedded in the code but having stripped that out, I think this might still work:-
function lgcmd
 cur_cmd_seq=`fc -l -0 | cut -f1`
 if [ "$cur_cmd_seq" != "$prev_cmd_seq" ]
    /usr/bin/logger "on $PTS as `id -un`: `fc -l -0 | cut -f2-`"

prev_cmd_seq=                  # Set as null in case shell refuses unset variables
trap lgcmd DEBUG

You would need to determine the pseudo-terminal as $PTS but the rest gives you a fairly good trace to challenge people with.

I hope that this helps,
Test Your Knowledge in Computers #128
Difficulty: Easy
Generally speaking, most of the software included in a Linux distro is free and open source.
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audit_binfile(5)					Standards, Environments, and Macros					  audit_binfile(5)

audit_binfile - generation of Solaris audit logs SYNOPSIS
/usr/lib/security/ DESCRIPTION
The audit_binfile plugin module for Solaris audit, /usr/lib/security/, writes binary audit data to files as configured in audit_control(4); it is the default plugin for the Solaris audit daemon auditd(1M). Its output is described by audit.log(4). The audit_binfile plugin is loaded by auditd if audit_control contains one or more lines defining audit directories by means of the dir: specification or if audit_control has a plugin: specification of OBJECT ATTRIBUTES
The p_dir and p_minfree attributes are equivalent to the dir: and minfree: lines described in audit_control. If both the dir: line and the p_dir attribute are used, the plugin combines all directories into a single list with those specified by means of dir: at the front of the list. If both the minfree and the p_minfree attributes are given, the p_minfree value is used. EXAMPLES
The following directives cause to be loaded, specify the directories for writing audit logs, and specify the percentage of required free space per directory. flags: lo,ad,-fm naflags: lo,ad plugin:; p_minfree=20; p_dir=/etc/security/jedgar/eggplant, /etc/security/jedgar.aux/eggplant, /etc/security/global/eggplant ATTRIBUTES
See attributes(5) for a description of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |MT Level |MT-Safe | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
auditd(1M), audit_control(4), syslog.conf(4), attributes(5) SunOS 5.10 20 May 2003 audit_binfile(5)

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