Auditd syslog plugin

Auditd syslog plugin

[Boyce, Kevin P [US] (AS)]

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All,

After enabling the syslog plugin for audispd and sending logs to a remote server I am seeing every event being written to /var/log/messages locally which is filling up /var.

This is all redundant since local audit logs are kept in /var/log/audit.  Is there a way to prevent auditd syslog plugin from writing to /var/log/messages?

Thanks,
Kevin

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Re: Auditd syslog plugin

[Steve Grubb]

On Monday, June 4, 2018 9:02:04 AM EDT Boyce, Kevin P [US] (AS) wrote:
> All,
> 
> After enabling the syslog plugin for audispd and sending logs to a remote
> server I am seeing every event being written to /var/log/messages locally
> which is filling up /var.
> 
> This is all redundant since local audit logs are kept in /var/log/audit. 
> Is there a way to prevent auditd syslog plugin from writing to
> /var/log/messages?

That is pretty much what the plugin does. It writes all events to syslog 
which based on rules in /etc/rsyslog.conf decides what to do with the text. 
Typically it is to write everything to /var/log/messages.

However, you can assign a specific facility to the audit events in the /etc/
audisp/plugins.d/syslog.conf file and then in rsyslog.conf exclude the 
facility by putting <facility>.none on the /var/log/messages line.

-Steve

Re: Auditd syslog plugin

[John Jasen]

If you're on a system using rsyslog, you can also leverage imfile and
send it directly to a remote logserver.

rsyslog event queuing also handles interruptions in remote logging more
gracefully than audispd syslog.



On 06/04/2018 06:11 PM, Steve Grubb wrote:
> On Monday, June 4, 2018 9:02:04 AM EDT Boyce, Kevin P [US] (AS) wrote:
>> All,
>>
>> After enabling the syslog plugin for audispd and sending logs to a remote
>> server I am seeing every event being written to /var/log/messages locally
>> which is filling up /var.
>>
>> This is all redundant since local audit logs are kept in /var/log/audit. 
>> Is there a way to prevent auditd syslog plugin from writing to
>> /var/log/messages?
> That is pretty much what the plugin does. It writes all events to syslog 
> which based on rules in /etc/rsyslog.conf decides what to do with the text. 
> Typically it is to write everything to /var/log/messages.
>
> However, you can assign a specific facility to the audit events in the /etc/
> audisp/plugins.d/syslog.conf file and then in rsyslog.conf exclude the 
> facility by putting <facility>.none on the /var/log/messages line.
>
> -Steve
>
>
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