Re: alert messages

From: SecurIT Informatique Inc. (securit_at_iquebec.com)
Date: 03/04/04

  • Next message: Dean Smith: "Re: blocking p2p traffic" 
    Date: Thu, 04 Mar 2004 15:31:46 -0500
To: "Rodrigo B. Ramos" <rodrigo.ramos@triforsec.com.br>

    Hello.

    I don't think there's any simple "math" to adequately answer your request,
    especially with so little specifics info about the kind of alerts your
    sensor deals with. Anyway, that's not the point.

    I have made a tool called LogAgent Pro 5.2 that was created partly in order
    to help solve this kind of problem. LogAgent is a log file monitoring and
    analyzing program, which will monitor in real-time any ASCII log file and
    the Event Viewer and apply rules you have defined related to the
    appropriate fields for each log. Data can be gathered together in simple
    reports, which you can send when a certain number of alerts is reached
    and/or when a specified amount of time is elapsed. So, if you're receiving
    65000 alerts from a noisy port scan, you can easily gather them into
    reports of 1000 events each, which would generate only 65 messages, while
    still catching less noisy scans by still sending a report when a time-limit
    is reached without waiting to have collected 1000 events. You can also use
    this to get notified on Priorities 1 alerts only, etc...

    One of the rules you can use with LogAgent allows you to call external
    programs (like a SMS messaging program or a pager system), and pass log
    data as parameters so you can customize your alert messages more than just
    "You have received 1000 alerts."

    It's true that you could achieve mostly the same results with some
    scripting, but if you're looking for an already built solution, here it is.

    You can get an eval copy of the software at http://securit.iquebec.com/.

    Hope this helps.

    Adam Richard
    SécurIT Informatique Inc.

    At 01:52 PM 03/03/2004, Rodrigo B. Ramos wrote:

    >Hi!
    >
    >Can anyone help me in the following job?
    >
    >The X Company has more than 1000 machines (desktop and servers) on their
    >WAN. They installed snort as an IDS, they are logging remotely and
    >sending alerts by email and by sms to mobiles.
    >
    >What are the best steps to customize the alerts? The phone company
    >thought that the servers were doing some spam jobs. They send many, many
    >alerts and probably almost flood the phone phone company network.
    >
    >What is the best way to tell the system to send alerts? Which math
    >should I use?
    >
    >I know I can know have to disable some types of rules that just can't
    >affect the ambient, I know I can count packets by priorities, by type of
    >alerts, by packets, ... But what math can I use to send the alerts
    >without flooding mail boxes and mobiles?
    >
    >
    >Best Regards,
    >--
    >Rodrigo Buarque Ramos
    >GPG KEY ID: 0x71CFE098 --> http://pgp.mit.edu
    >Key fingerprint = F381 366D D233 22B4 7E72 A21D DE9B 2FF3 71CF E098
    >55 81 88513524
    >55 81 3463.1593
    >http://www.triforsec.com.br
    >http://www.defenselayer.com
    >
    >
    >---------------------------------------------------------------------------
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  • Next message: Dean Smith: "Re: blocking p2p traffic"

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