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Questions tagged [audit]

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0
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1answer
27 views

How to inventory apps on Linux Desktop?

[N.B. My first post - guidance welcomed] We have a small local network of users (5) on deb-based systems and would like to maintain an index of apps installed. How can we, programmatically, ...
0
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1answer
30 views

why would ldconfig create a symlink to libselinux.so.1 from libext2fs.so.2?

using strace I have found a behaviour of ldconfig (glibc), I can make no sense of lstat("/usr/lib/libext2fs.so.2", {st_mode=S_IFLNK|0777, st_size=16, ...}) = 0 unlink("/usr/lib/libext2fs.so.2") ...
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0answers
23 views

Is there a new systemd-ish way to find files opened by a daemon/service?

Normaly, I would look into the directory /proc/${deamons pid}/fd to have a better idea about which files a service reads from or writes too. However receintly I was asked to use systemd to achieve ...
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0answers
14 views

How do you configure auditd logs to show up in journalctl?

I cannot find the usual auditd logs when doing "journalctl | grep msg=audit". However, I do see the auditd logs in /var/log/audit/audit.log and when doing ausearch. Is there a way to configure it so ...
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0answers
31 views

Solution for Auditing File Movement and Usage [closed]

I am a graduate research student at a children's hospital and they have fairly strict rules on how patient data is handled. The general principle is that the data cannot leave hospital hardware onto ...
0
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1answer
25 views

how to extracting only few records from audit.log

How to Extract audit.log While starting auditd service in linux it records all executed commands as exepected but in addition it records the background process too (the commands which is not executed ...
1
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2answers
127 views

Understanding the audit log - file permissions and file content changed

I need to understand the log below, my index.php got obfuscated code, and file permissions changed from 644 to 755 as well. I've got something in my audit but can't really tell what and how it ...
0
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1answer
39 views

Tracking all file changes in a unix host

I'm evaluating a tool and I need to identify all files (including system config files) added, changed or removed by this application (it is installed using pip). After installing on a external host, ...
2
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1answer
228 views

How to log failure to start/stop a service?

I want to track whether a normal user attempted to run a service. The command for starting/stopping service is given as below: service filebeat start I wrote an auditd rule like below: -w /usr/sbin/...
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0answers
24 views

Tracing writes to files and devices

I would like to audit writes to a specific file (like /home/john/file.txt) and/or a specific device (like /dev/tty/1). How to do it? By audit I mean: What was written by process? Solution based on ...
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0answers
24 views

Freeze Linux when log is full

Is it possible to configure a Linux server to stop all operations when it cannot create logs, similar to the security policy in Windows called "Audit: Shut down system immediately if unable to log ...
0
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1answer
104 views

check auditd version

Is there a better/more proper way to check auditd's version on Linux machine than to check it as part of the installed program name? For instance on Ubuntu in run /usr/bin/dpkg-query -W --showformat '...
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0answers
89 views

'auditctl -l' output is different between different auditd version

I need to match a regex against the output of 'auditctl -l' command. From the several checks I conducted I saw a difference in output convention writing in different audit versions (for the same audit ...
1
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1answer
48 views

What is the purpose of auditctl -a never,task?

I see that whenever I start a new ec2 server the default rule for auditctl is auditctl -a never,task What is the purpose of having this rule?
0
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2answers
233 views

Getting error when stopping auditd

I have recently made changes to my audit.rules file on a 32bit RHEL 6.9 machine and I know that since the end of the file has -e 2 to make the file immutable a reboot is required for the new rules to ...
2
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1answer
81 views

Audit file modifications over ssh in Linux

I wanted to monitor all the modifications made to file in Linux server On some research I found audit tool which I have installed and configured using following commands yum install audit # ...
1
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1answer
149 views

Encryption of syslog & auditd in local disk? [closed]

We need to use encrypted syslog and auditd in local disk. Is it possible to save syslog and auditd message encrypted in disk ?
1
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2answers
26 views

servresolv.conf become blank when system is running

I use dhcpcd to manage this file. First, start dhcpcd service, and the file has something with namesever. All things can be done correctly. But this file will become blank after a while. I try ...
0
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1answer
42 views

How is source code reviewed/audited, prior to inclusion in linux mainline?

An answer to this question would provide insight and references about how the linux kernel source code is reviewed prior to be released? Particular interesting aspect of this question to me are: Who ...
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0answers
59 views

AIX auditpr timestamp format

Is there a way to customize the timestamp format that the auditpr command on AIX generates? I am logging to binary, and when I use auditpr to read the binary audit logs, I get something similar to : ...
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0answers
97 views

Why ausearch does not find matches for SYSTEM_BOOT and SYSTEM_SHUTDOWN?

I ask myself why I get no matches when I search for SYSTEM_BOOT or SYSTEM_SHUTDOWN. ausearch -m SYSTEM_BOOT ausearch -m SYSTEM_SHUTDOWN To be sure that events are not getting lost during booting I ...
1
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1answer
243 views

What is the Windows equivalent of 'Audit log cleared' event in Unix/Linux?

Windows has EventID 1102 "The audit log was cleared". What is the equivalent audit event in Unix/Linux? If someone has a sample event, and know what audit policy needs to be configured to get this ...
3
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1answer
317 views

How to decode audit logs

I'm auditing the files in a nfs share. When I look at the audit logs using the command ausearch -f /var/nfs/general , I get some logs that looks like this: time->Tue Jun 12 16:23:34 2018 type=...
0
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1answer
295 views

Difference between Failed Authentications and Failed Logins in aureport [closed]

Lately I've been exploring the aureport tool, but I've noticed the following in the outputs and behavior of it. For example, running the following command: # aureport --failed Displays the ...
0
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1answer
67 views

aureport -l doesnt show the sucessful count of the user who used “su” command

why the command aureport -l --success --summary -i does show the successful login count of the user who used su command. The output the above said command only calculates sshd, gdm sessions but not ...
0
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1answer
98 views

How to install audit2allow on Alpine Linux 3.5?

I am coming from an apt-get background and am now trying (and failing) to use Alpine Linux's apk utility for package management. I try running apk install audit2allow and end up with a help message ...
1
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1answer
44 views

Fastest way to locate any files/dirs with different ACLs than parent? (FreeBSD)

As the question says. I have a data pool with ~ 10M files with access controlled by NFSv4 ACLs. It's usable from CLI, Samba, sometimes by daemon processes or rsync, and for some dirs by ftp/sftp, so ...
0
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1answer
142 views

Logger -f command killed opening /var/log/messages in tail

I'm trying to run this command on CentOS. logger -t AUDIT_LOG -f <MY_AUDIT_LOG_FILE> & It works correctly for 10/20 seconds. Opening /var/log/messages in tail I can correctly see messages ...
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0answers
70 views

Shell command audit for a single user

What is the easiest way to log all the commands ran in the all different shells (bash, zsh...) by a certain user to a file, syslog or somewhere else?
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0answers
31 views

Is there a way to log attempts to change a file in RHEL6?

We have a RHEL6 server that was built using an old homegrown build platform. The team that built the platform was disbanded, and all members have moved on. So, we are trying to figure out everything ...
3
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0answers
177 views

Can aureport show the full path to files?

I'm tailing auditd.log and piping it into ausearch and then aureport, with the aim of getting a simple stream of modified files: tail -f /var/log/audit/audit.log | ausearch -k my_key | aureport -f --...
3
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1answer
121 views

Changes made with chattr are not detected by auditd

I want to monitor a particular directory using auditd, so that any changes are logged. I've created a rule using: auditctl -w /etc/my_path_to_monitor -p wa -k my_rule This works great for everything ...
7
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2answers
1k views

List all programs used by a shell script

I'm trying to figure out a method to list all the programs that a script will use when it will be run, without actually running it. I've written these quick and dirty oneliners: # fill an array with ...
0
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1answer
100 views

How to enable audit on access to files (rwx) in SLES9

How can I enable audit on access to specific files in Suse Linux Enterprise 9?
1
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1answer
323 views

How do I interpret audit message logged during shutdown? [closed]

My machine (RHEL 7.4) is hanging during shutdown and displaying the following audit message: type=1300 audit(1503569606.186:27573): arch=c000003e syscall=2 sucess=no exit=-13 a0=7ffee8a3db90 a1=2 a2=...
0
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2answers
1k views

Configuring Solaris 11 Audit

Recently I was working trying to activate the solaris audit service to record logs and write them in a single file in /var/adm/auditlog. The thing is, I was trying to find some useful info about it ...
1
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0answers
143 views

autrace - Does it call auditctl or not?

The autrace man page summary is a little confusing: This command deletes all audit rules prior to executing the target program and after executing it. As a safety precaution, it will not run ...
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0answers
281 views

Enabling custom auditd logging in RedHat

I enabled the auditd service using the following configuration to trace all user activities (belonging to group ID 555) on RedHat OS: vim /etc/audit/audit.rules -a always,exit -F gid=555 -F arch=b64 -...
2
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1answer
45 views

BSM and memory usage

Currently have BSM installed on my solaris 10 on my virtual machine. What I'm trying to do is that I want to measure the impact of enabling BSM (auditing) on Solaris on the CPU, memory. So after ...
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0answers
78 views

Why does this `aureport` show a question mark in the 'exe' field?

I'm trying to debug why my docker socket changes ownership on a weekly basis. I created an audit log rule on /var/run/docker.sock. The audit report shows me many events happening to that socket, but ...
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0answers
64 views

Audit a command with a parameter under Linux

I want to use audit function of Linux to audit a Linux command date -s. If I write -w /bin/date -p x -k system-call in audit.rules, it will record when I use the command date. But I don't want it to ...
3
votes
1answer
361 views

Every AD SSH login starts with a failure in audit.log

Whenever I login to my Centos 7.x server I always get a transparent failure in the audit.log. This is making my attempts to have a daily script for failed logins very difficult as we can't be sure ...
4
votes
1answer
354 views

linux audit events not passed to go-audit

We're attempting to use slack's go-audit tool to capture/process linux audit events. More info: https://github.com/slackhq/go-audit The issue is that the linux audit is correctly picking up events, ...
1
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2answers
144 views

Viewing relevant information about file accesses from the audit log

Assume, you have a Linux machine and there are three users - user1, user2 and user3, who can log in to the machine. You created a rule $ auditctl -w /etc/file.txt -p rwxa If you would like to see ...
6
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0answers
375 views

How to capture the xtrace output (only) in a file?

I know that I can redirect the xtrace output to some_file with something like this: exec 2 >> some_file set +x ...but this sends to some_file not only the xtrace output, but also any other ...
0
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1answer
628 views

HPUX 11i v3 Auditing to a syslog server - Configuration

I had trouble setting up auditing on our HPUX system and sending the same to a SIEM solution as a multiline log. The issue was that audsys writes the log to binary files and I need it to be setup in ...
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2answers
86 views

Monitor accesses to directory on a Linux machine [duplicate]

How would you monitor a directory on a Linux machine to check if there was a user (or someone from the network) who attempted to access it?
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0answers
70 views

How do you block a specific process (such as vim) from accessing a mounted disk?

If I have a disk mounted on my hard-drive, I want to be able to block all but specific processes from having read/write access to that disk. Currently, I'm thinking the best way is to audit the disk ...
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0answers
32 views

Audit is not watching /mnt/foo on RHEL4

======New info ===== On my RHEL4 system, auditctl is failing to watch only when something is mounted via the mount command. The same directory works fine when it is unmounted. The version of audit is ...
2
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2answers
106 views

What does undocumented “proto” command line argument do in auditdistd on FreeBSD?

As you might know there is an auditdistd(8) daemon available on FreeBSD. It has some documented command line arguments like -c, -d, etc. (see more here (link)). I was trying to learn how it works ...