Security audit rules

Security audit rules

[Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai)]

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Hi,

In one of the VM I find audit.rules defined under /etc/audit as well as /etc/audit/rules.d.

What is the significance as well as difference between the files found in 2 places.

Also please let me know what is the correct location where audit.rules need to be places.


Regards,
Vezhavendan K

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Re: Security audit rules

[Richard Guy Briggs]

On 2019-11-08 12:52, Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai) wrote:
> Hi,
> 
> In one of the VM I find audit.rules defined under /etc/audit as well as /etc/audit/rules.d.
> 
> What is the significance as well as difference between the files found in 2 places.

You haven't said what distro you are using.  In more recent distros, the
rules in rules.d are used by augenrules to populate audit.rules,
overwriting them.

> Also please let me know what is the correct location where audit.rules need to be places.

Depends on your distro.

> Vezhavendan K

- RGB

--
Richard Guy Briggs <rgb@redhat.com>
Sr. S/W Engineer, Kernel Security, Base Operating Systems
Remote, Ottawa, Red Hat Canada
IRC: rgb, SunRaycer
Voice: +1.647.777.2635, Internal: (81) 32635

RE: Security audit rules

[Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai)]

I am using RHEL7.6 version (Red Hat Enterprise Linux 7 (Maipo)).

Regards,
Vezhavendan K

-----Original Message-----
From: Richard Guy Briggs <rgb@redhat.com> 
Sent: Wednesday, November 20, 2019 4:03 AM
To: Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai) <vezhavendan.1.kadirvadivelu.ext@nokia.com>
Cc: linux-audit@redhat.com
Subject: Re: Security audit rules

On 2019-11-08 12:52, Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai) wrote:
> Hi,
> 
> In one of the VM I find audit.rules defined under /etc/audit as well as /etc/audit/rules.d.
> 
> What is the significance as well as difference between the files found in 2 places.

You haven't said what distro you are using.  In more recent distros, the rules in rules.d are used by augenrules to populate audit.rules, overwriting them.

> Also please let me know what is the correct location where audit.rules need to be places.

Depends on your distro.

> Vezhavendan K

- RGB

--
Richard Guy Briggs <rgb@redhat.com>
Sr. S/W Engineer, Kernel Security, Base Operating Systems Remote, Ottawa, Red Hat Canada
IRC: rgb, SunRaycer
Voice: +1.647.777.2635, Internal: (81) 32635

Re: Security audit rules

[Steve Grubb]

On Tuesday, November 19, 2019 11:36:38 PM EST Kadirvadivelu, Vezhavendan 1. 
(EXT - IN/Chennai) wrote:
> I am using RHEL7.6 version (Red Hat Enterprise Linux 7 (Maipo)).

This distribution wants rules placed in /etc/audit/rules.d/
The audit package should have a file named README-rules that explains what is 
expected.

-Steve

> -----Original Message-----
> From: Richard Guy Briggs <rgb@redhat.com>
> Sent: Wednesday, November 20, 2019 4:03 AM
> To: Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai)
> <vezhavendan.1.kadirvadivelu.ext@nokia.com> Cc: linux-audit@redhat.com
> Subject: Re: Security audit rules
> 
> On 2019-11-08 12:52, Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai) 
wrote:
> > Hi,
> > 
> > In one of the VM I find audit.rules defined under /etc/audit as well as
> > /etc/audit/rules.d.
> > 
> > What is the significance as well as difference between the files found in
> > 2 places.
> You haven't said what distro you are using.  In more recent distros, the
> rules in rules.d are used by augenrules to populate audit.rules,
> overwriting them.
> > Also please let me know what is the correct location where audit.rules
> > need to be places.
> Depends on your distro.
> 
> > Vezhavendan K
> 
> - RGB
> 
> --
> Richard Guy Briggs <rgb@redhat.com>
> Sr. S/W Engineer, Kernel Security, Base Operating Systems Remote, Ottawa,
> Red Hat Canada IRC: rgb, SunRaycer
> Voice: +1.647.777.2635, Internal: (81) 32635
> 
> 
> --
> Linux-audit mailing list
> Linux-audit@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-audit

RE: Security audit rules

[Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai)]

That's clear on the rules. Thanks for that, but my question is where should I place the file called 'audit.rules'. It should be under '/etc/audit' or '/etc/audit/rules.d' or in both places.

Regards,
Vezhavendan K

-----Original Message-----
From: Steve Grubb <sgrubb@redhat.com> 
Sent: Friday, November 22, 2019 10:39 PM
To: linux-audit@redhat.com
Cc: Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai) <vezhavendan.1.kadirvadivelu.ext@nokia.com>; Richard Guy Briggs <rgb@redhat.com>
Subject: Re: Security audit rules

On Tuesday, November 19, 2019 11:36:38 PM EST Kadirvadivelu, Vezhavendan 1. 
(EXT - IN/Chennai) wrote:
> I am using RHEL7.6 version (Red Hat Enterprise Linux 7 (Maipo)).

This distribution wants rules placed in /etc/audit/rules.d/ The audit package should have a file named README-rules that explains what is expected.

-Steve

> -----Original Message-----
> From: Richard Guy Briggs <rgb@redhat.com>
> Sent: Wednesday, November 20, 2019 4:03 AM
> To: Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai) 
> <vezhavendan.1.kadirvadivelu.ext@nokia.com> Cc: linux-audit@redhat.com
> Subject: Re: Security audit rules
> 
> On 2019-11-08 12:52, Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai)
wrote:
> > Hi,
> > 
> > In one of the VM I find audit.rules defined under /etc/audit as well 
> > as /etc/audit/rules.d.
> > 
> > What is the significance as well as difference between the files 
> > found in
> > 2 places.
> You haven't said what distro you are using.  In more recent distros, 
> the rules in rules.d are used by augenrules to populate audit.rules, 
> overwriting them.
> > Also please let me know what is the correct location where 
> > audit.rules need to be places.
> Depends on your distro.
> 
> > Vezhavendan K
> 
> - RGB
> 
> --
> Richard Guy Briggs <rgb@redhat.com>
> Sr. S/W Engineer, Kernel Security, Base Operating Systems Remote, 
> Ottawa, Red Hat Canada IRC: rgb, SunRaycer
> Voice: +1.647.777.2635, Internal: (81) 32635
> 
> 
> --
> Linux-audit mailing list
> Linux-audit@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-audit

Re: Security audit rules

[Steve Grubb]

On Sunday, November 24, 2019 1:44:03 AM EST Kadirvadivelu, Vezhavendan 1. 
(EXT - IN/Chennai) wrote:
> That's clear on the rules. Thanks for that, but my question is where should
> I place the file called 'audit.rules'. It should be under '/etc/audit' or
> '/etc/audit/rules.d' or in both places.

Nowhere. audit.rules is built by augenrules using the sorting method 
described in the man page for it. Again, there is a README-rules file that 
explains how this works. If you have specific things that you would like to 
add, then make a file for it and place it in /etc/audit/rules.d where it will 
get combined with other rule files. README-rules gives suggestions about how 
to name the file for predictable inclusion.

-Steve


> -----Original Message-----
> From: Steve Grubb <sgrubb@redhat.com>
> Sent: Friday, November 22, 2019 10:39 PM
> To: linux-audit@redhat.com
> Cc: Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai)
> <vezhavendan.1.kadirvadivelu.ext@nokia.com>; Richard Guy Briggs
> <rgb@redhat.com> Subject: Re: Security audit rules
> 
> On Tuesday, November 19, 2019 11:36:38 PM EST Kadirvadivelu, Vezhavendan 1.
> (EXT - IN/Chennai) wrote:
> > I am using RHEL7.6 version (Red Hat Enterprise Linux 7 (Maipo)).
> 
> This distribution wants rules placed in /etc/audit/rules.d/ The audit
> package should have a file named README-rules that explains what is
> expected.
> 
> -Steve
> 
> > -----Original Message-----
> > From: Richard Guy Briggs <rgb@redhat.com>
> > Sent: Wednesday, November 20, 2019 4:03 AM
> > To: Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai)
> > <vezhavendan.1.kadirvadivelu.ext@nokia.com> Cc: linux-audit@redhat.com
> > Subject: Re: Security audit rules
> > 
> > On 2019-11-08 12:52, Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai)
> 
> wrote:
> > > Hi,
> > > 
> > > In one of the VM I find audit.rules defined under /etc/audit as well
> > > as /etc/audit/rules.d.
> > > 
> > > What is the significance as well as difference between the files
> > > found in
> > > 2 places.
> > 
> > You haven't said what distro you are using.  In more recent distros,
> > the rules in rules.d are used by augenrules to populate audit.rules,
> > overwriting them.
> > 
> > > Also please let me know what is the correct location where
> > > audit.rules need to be places.
> > 
> > Depends on your distro.
> > 
> > > Vezhavendan K
> > 
> > - RGB
> > 
> > --
> > Richard Guy Briggs <rgb@redhat.com>
> > Sr. S/W Engineer, Kernel Security, Base Operating Systems Remote,
> > Ottawa, Red Hat Canada IRC: rgb, SunRaycer
> > Voice: +1.647.777.2635, Internal: (81) 32635
> > 
> > 
> > --
> > Linux-audit mailing list
> > Linux-audit@redhat.com
> > https://www.redhat.com/mailman/listinfo/linux-audit

RE: Security audit rules

[Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai)]

Thanks Steve. That explains.

Regards,
Vezhavendan K

-----Original Message-----
From: Steve Grubb <sgrubb@redhat.com> 
Sent: Monday, November 25, 2019 7:08 PM
To: Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai) <vezhavendan.1.kadirvadivelu.ext@nokia.com>
Cc: linux-audit@redhat.com; Richard Guy Briggs <rgb@redhat.com>
Subject: Re: Security audit rules

On Sunday, November 24, 2019 1:44:03 AM EST Kadirvadivelu, Vezhavendan 1. 
(EXT - IN/Chennai) wrote:
> That's clear on the rules. Thanks for that, but my question is where 
> should I place the file called 'audit.rules'. It should be under 
> '/etc/audit' or '/etc/audit/rules.d' or in both places.

Nowhere. audit.rules is built by augenrules using the sorting method described in the man page for it. Again, there is a README-rules file that explains how this works. If you have specific things that you would like to add, then make a file for it and place it in /etc/audit/rules.d where it will get combined with other rule files. README-rules gives suggestions about how to name the file for predictable inclusion.

-Steve


> -----Original Message-----
> From: Steve Grubb <sgrubb@redhat.com>
> Sent: Friday, November 22, 2019 10:39 PM
> To: linux-audit@redhat.com
> Cc: Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai) 
> <vezhavendan.1.kadirvadivelu.ext@nokia.com>; Richard Guy Briggs 
> <rgb@redhat.com> Subject: Re: Security audit rules
> 
> On Tuesday, November 19, 2019 11:36:38 PM EST Kadirvadivelu, Vezhavendan 1.
> (EXT - IN/Chennai) wrote:
> > I am using RHEL7.6 version (Red Hat Enterprise Linux 7 (Maipo)).
> 
> This distribution wants rules placed in /etc/audit/rules.d/ The audit 
> package should have a file named README-rules that explains what is 
> expected.
> 
> -Steve
> 
> > -----Original Message-----
> > From: Richard Guy Briggs <rgb@redhat.com>
> > Sent: Wednesday, November 20, 2019 4:03 AM
> > To: Kadirvadivelu, Vezhavendan 1. (EXT - IN/Chennai) 
> > <vezhavendan.1.kadirvadivelu.ext@nokia.com> Cc: 
> > linux-audit@redhat.com
> > Subject: Re: Security audit rules
> > 
> > On 2019-11-08 12:52, Kadirvadivelu, Vezhavendan 1. (EXT - 
> > IN/Chennai)
> 
> wrote:
> > > Hi,
> > > 
> > > In one of the VM I find audit.rules defined under /etc/audit as 
> > > well as /etc/audit/rules.d.
> > > 
> > > What is the significance as well as difference between the files 
> > > found in
> > > 2 places.
> > 
> > You haven't said what distro you are using.  In more recent distros, 
> > the rules in rules.d are used by augenrules to populate audit.rules, 
> > overwriting them.
> > 
> > > Also please let me know what is the correct location where 
> > > audit.rules need to be places.
> > 
> > Depends on your distro.
> > 
> > > Vezhavendan K
> > 
> > - RGB
> > 
> > --
> > Richard Guy Briggs <rgb@redhat.com>
> > Sr. S/W Engineer, Kernel Security, Base Operating Systems Remote, 
> > Ottawa, Red Hat Canada IRC: rgb, SunRaycer
> > Voice: +1.647.777.2635, Internal: (81) 32635
> > 
> > 
> > --
> > Linux-audit mailing list
> > Linux-audit@redhat.com
> > https://www.redhat.com/mailman/listinfo/linux-audit