Snort mailing list archives

Re: Reloading a Configuration without Restarting Snort, in Snort3


From: Russ via Snort-users <snort-users () lists snort org>
Date: Mon, 18 Mar 2019 16:14:36 -0400

Hi Ralph,

See below for answers.

Hope that helps.
Russ

On 3/18/19 10:06 AM, Ralph Sinnhuber via Snort-users wrote:


On Mon, 18 Mar 2019 at 14:01, Ralph Sinnhuber <ralph.sinnhuber () gmail com <mailto:ralph.sinnhuber () gmail com>> wrote:

    Hi there,


    It would be a great help if one of you would be able to clarify my
    question; alot of thanks in advance.


    Documentation suggests I can reload snort with a new configuration
    file without having to restart it, by enabling reload before
    building snort and then running a command during..  However I’m
    unsure how to do this in snort3.


    http://manual-snort-org.s3-website-us-east-1.amazonaws.com/node24.html

    this gives the impression that you can run –enable-reload when
    performing ./configure before installing snort

That is a Snort 2 manual and won't help you with Snort 3.  The Snort 3 manual is also on snort.org.

    However after following the set up guide for Centos 7 attached
    (part 3 pg.5/6):


    I don’t have a configure file, only a configure_cmake.sh file,
    which, while having some enable options, does not have reload as
    one of them. The full list can be retrieved using
    ./configure_cmake.sh –help. Is this feature not yet supported on
    snort3 or should I have a configure file somewhere?

Snort 3 simplifies a lot of things, including the build.  That option does not exist because it is not required.  Reload is always available.

    The User manual for snort 3 (also attached) suggests you should be
    able to call ./configure from somewhere in the snort3 files as it
    mentions it with another enable and --help command on pg 205 (220
    in the pdf)

That should now be ./configure_cmake.sh --help.  We dropped the automake support a while back.

    I don’t know if they’ve made a mistake here as they mention the
    configure_cmake.sh file in the installation process on pg 14 (29
    on the pdf) .

    Any Clarification would be great.

So you can trigger a reload by hupping the Snort 3 process.  That will reload the original config file.  Look in the Snort 3 manual under Usage / Shell for how to use commands if you want to reload that way.  Via command, you can reload a different file.

    Thanks very much,

    Ralph


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