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Top Forums Shell Programming and Scripting Reporting SU and Failedlogins Post 100161 by DogDay on Friday 24th of February 2006 08:51:08 AM
Old 02-24-2006
There are a couple of ways to address this.

One is by truncating the wtmp/failedlogin files with fwtmp.

From the fwtmp man page:
Code:
 1. To convert a binary record in wtmp format to an ASCII record called
     dummy.file, enter:

     /usr/sbin/acct/fwtmp < /var/adm/wtmp > dummy.file

     The content of a binary wtmp file is redirected to a dummy ASCII file.
  2. To convert an ASCII dummy.file to a binary file in wtmp format called
     /var/adm/wtmp, enter the fwtmp command with the -ic switch:

     /usr/sbin/acct/fwtmp -ic < dummy.file > /var/adm/wtmp

     The dummy ASCII file is redirected to a binary wtmp file.

After step 1. you could remove X number of lines or manually edit it etc...

Or the easier way:

Code:
who failedlogin|grep $(date +"%b")

Which returns the current months records. Its not the proper way to get that information as the string for February may be found in the username or hostname etc... The proper way would be to use awk and compare $(date +"%b") with $3.

Or you could simply truncate the file on the first of every month with:

Code:
> /var/adm/wtmp
> /etc/security/failedlogin


Good luck.
 

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AUREPORT:(8)						  System Administration Utilities					      AUREPORT:(8)

NAME
aureport - a tool that produces summary reports of audit daemon logs SYNOPSIS
aureport [options] DESCRIPTION
aureport is a tool that produces summary reports of the audit system logs. The aureport utility can also take input from stdin as long as the input is the raw log data. The reports have a column label at the top to help with interpretation of the various fields. Except for the main summary report, all reports have the audit event number. You can subsequently lookup the full event with ausearch -a event number. You may need to specify start & stop times if you get multiple hits. The reports produced by aureport can be used as building blocks for more complicated analysis. OPTIONS
-au, --auth Report about authentication attempts -a, --avc Report about avc messages -c, --config Report about config changes -cr, --crypto Report about crypto events -e, --event Report about events -f, --file Report about files --failed Only select failed events for processing in the reports. The default is both success and failed events. -h, --host Report about hosts --help Print brief command summary -i, --interpret Interpret numeric entities into text. For example, uid is converted to account name. The conversion is done using the current resources of the machine where the search is being run. If you have renamed the accounts, or don't have the same accounts on your machine, you could get misleading results. -if, --input file Use the given file instead if the logs. This is to aid analysis where the logs have been moved to another machine or only part of a log was saved. --input-logs Use the log file location from auditd.conf as input for analysis. This is needed if you are using aureport from a cron job. -k, --key Report about audit rule keys -l, --login Report about logins -m, --mods Report about account modifications -ma, --mac Report about Mandatory Access Control (MAC) events -n, --anomaly Report about anomaly events. These events include NIC going into promiscuous mode and programs segfaulting. --node node-name Only select events originating from node name string for processing in the reports. The default is to include all nodes. Multiple nodes are allowed. -p, --pid Report about processes -r, --response Report about responses to anomaly events -s, --syscall Report about syscalls --success Only select successful events for processing in the reports. The default is both success and failed events. --summary Run the summary report that gives a total of the elements of the main report. Not all reports have a summary. -t, --log This option will output a report of the start and end times for each log. --tty Report about tty keystrokes -te, --end [end-date] [end-time] Search for events with time stamps equal to or before the given end time. The format of end time depends on your locale. If the date is omitted, today is assumed. If the time is omitted, now is assumed. Use 24 hour clock time rather than AM or PM to specify time. An example date using the en_US.utf8 locale is 09/03/2009. An example of time is 18:00:00. The date format accepted is influenced by the LC_TIME environmental variable. You may also use the word: now, recent, today, yesterday, this-week, week-ago, this-month, this-year. Today means starting now. Recent is 10 minutes ago. Yesterday is 1 second after midnight the previous day. This-week means starting 1 second after midnight on day 0 of the week determined by your locale (see localtime). This-month means 1 second after midnight on day 1 of the month. This-year means the 1 second after midnight on the first day of the first month. -tm, --terminal Report about terminals -ts, --start [start-date] [start-time] Search for events with time stamps equal to or after the given end time. The format of end time depends on your locale. If the date is omitted, today is assumed. If the time is omitted, midnight is assumed. Use 24 hour clock time rather than AM or PM to specify time. An example date using the en_US.utf8 locale is 09/03/2009. An example of time is 18:00:00. The date format accepted is influ- enced by the LC_TIME environmental variable. You may also use the word: now, recent, today, yesterday, this-week, this-month, this-year. Today means starting at 1 second after midnight. Recent is 10 minutes ago. Yesterday is 1 second after midnight the previous day. This-week means starting 1 second after midnight on day 0 of the week determined by your locale (see localtime). This-month means 1 second after midnight on day 1 of the month. This-year means the 1 second after midnight on the first day of the first month. -u, --user Report about users -v, --version Print the version and exit -x, --executable Report about executables SEE ALSO
ausearch(8), auditd(8). Red Hat Sept 2009 AUREPORT:(8)
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