Parse audit log


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Parse audit log
# 1  
Old 12-01-2015
Parse audit log

I am trying to parse the audit log to find a particular date that associated with a user record. The Date and the context of the record that I need to extract from the audit.log are 11-07-2015, the username and the activity he or she performed that day.


Here is my code:

Code:
grep -c date -d "11-07-2015 +%m%d%y" sudo /var/log/audit/audit.log

# 2  
Old 12-01-2015
What exactly is going wrong? Please decribe in detail, post error msgs and a decent input sample!

As to your code:
- What's the "sudo" for?
- I reckon you need to apply command substitution to the date command.
- Why do you need the date at all if the search string is already at hand?
# 3  
Old 12-01-2015
# 4  
Old 12-02-2015
I am sorry that I was not clear

The purpose of my program is to extract from audit.log the name of the user who restarted an application service on a particular date.


The audit.log input data is as follow:

Code:
type=LOGIN msg=audit(1175508928.548:4503): user pid=7878 uid=0 auid=555555
ses=4444 msg='start direction=from-servr suid=90 authentication acct=root laddr=133.122.90.334  lport=4567 exe=/usr/sbin/sshd
hostname=earth.example.com res=success)

Here is my code. The first part of the code extract username from the passwd file
and the second part of the code adds a username to auid field and converts audit dates into readable dates. The audit.log is then queried by 11/07/2015 date. Finally, the results are outputted to filename audit.txt. My program generates an error when executed.



here is my code:
Code:
echo u =awk -F '{print $1}' /etc/passwd

sudo cat /var/log/audit/audit.log | ausearch -ui $u perl -ne 'chomp: if ( /(.*type\()(\d+)(\. \d+.*)/) {$td = scalar localtime $; print "$1$td-$30 \n";}' > tmp/audit.txt


The follow is an example of how the data in the output audit.txt needs to be displayed:

Code:
type=LOGIN msg=11/07/2015 12:38: 38 PM user pid=7878 uid=deepak auid=deepak 
ses=4444 msg='start direction=from-servr suid=90 authentication acct=root laddr=133.122.90.334  lport=4567 exe=/usr/sbin/sshd
hostname=earth.example.com res=success)


Last edited by Don Cragun; 12-03-2015 at 02:03 AM.. Reason: Remove QUOTE tags; fix CODE tags.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. SuSE

Alert for Audit log

Dear users, I have SLES 11 and SLES 10 servers. I'd like to receive an alert when audit log files reach certain percentage of full. 1. Is '/etc/audit/auditd.conf' the right file to modify? 2. I'd like to receive email alert. Can I specify my email in this parameter 'action_mail_acct... (1 Reply)
Discussion started by: JDBA
1 Replies

2. Red Hat

Audit.log Management

Hi, I'm fairly new to administering RedHat (or any Linux system for that matter), and was wondering if someone could help me work out how to best manage audit logs. In a nutshell, this is what I need to do: - Compress audit.log file(s) once a month and delete the originals - The... (0 Replies)
Discussion started by: Seonix
0 Replies

3. Shell Programming and Scripting

monitor(audit) and log changes inside directory

Hi, everyone I would like to write ksh script in ksh (HP-UX), to audit any changes inside target directories. My enviroment has many constrains, so I can only use ksh and cannot install any 3rd party soft or command (include perl or other languages) The script functions like below 1) take a... (1 Reply)
Discussion started by: stev.h
1 Replies

4. AIX

When AIX audit start, How to set the /audit/stream.out file size ?

Dear All When I start the AIX(6100-06)audit subsystem. the log will save in /audit/stream.out (or /audit/trail), but in default when /audit/stream.out to grow up to 150MB. It will replace the original /audit/stream.out (or /audit/trail). Then the /audit/stream.out become empty and... (2 Replies)
Discussion started by: nnnnnnine
2 Replies

5. Solaris

how to find whether audit log is secure?

How do i find if audit logs is secured inside Solaris 10? · Verify that that audit log files are secured and owned appropriately. this is the question (1 Reply)
Discussion started by: werbotim
1 Replies

6. Solaris

audit log timestamps in GMT

I am aware that the timestamps of the audit log files are in the following format : file, 2011-09-13 07:40:24 .000 -4 Is there anyway that I can display the timestamps in local time format. Thanks for the help. ---------- Post updated at 02:18 PM ---------- Previous update was at 01:06... (0 Replies)
Discussion started by: chinchao
0 Replies

7. Cybersecurity

audit user in BSM/C2 Log

Hi, I keep encountering events in the BSM/C2 logs which shows that the audit-user who performed the event is the user (e.g. ongkk in the example below). However, the user is able to show me that he wasn't logged in at that time nor have the rights to perform the event (e.g. su in this example).... (5 Replies)
Discussion started by: BERNIELEE68
5 Replies

8. Solaris

delete audit old log

hi all, i enabled audit in my server it is working fine, now i want to delete old logs from audit file ,plz find a solution for it, Regards spandan (2 Replies)
Discussion started by: spandhan
2 Replies

9. AIX

audit.log file rotation

Hi guys, I've googled this quite a bit, and tried searching on these forums, but haven't found a solution to my problem. I wanted to inquire about AIX's audit subsystem - more specifically, how to rotate its log file. So far I've been able to find how to rotate AIX syslog log files, and I... (2 Replies)
Discussion started by: w1r3d
2 Replies

10. Solaris

Solaris BSM audit log

I got a lot of this message in my /var/audit log how can I exclude this message? header,127,2,invalid event number,fe,hostsol1.com.sg,2007-12-21 00:10:01.001 +08:00,argument,1,0x5,processor ID,argument ,2,0x3,flag,text,P_STATUS,subject,zhang1,root,root,root,root,18228,576129155,291 131094... (1 Reply)
Discussion started by: geoffry
1 Replies
Login or Register to Ask a Question