IBM Security QRadar

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  • 1.  Best rule optimization - Multi tenant deployment

    Posted Tue June 01, 2021 04:13 PM

    Hello,

    We have multi-tenant deployment QRadar. We have so many small domains/tenants (20+) and 60K+ EPS in total.

    There are an average of 150 rules for each domain here. (There are also BBs.) > Because for each domain a different unique parameter (for example in rule; not xx username for domain1, not yy username for domain2) or different response (different mail address)

    (Currently, the same rule is written separately for each domain, detail below)

    Rule-1

    and when the domain is one of the following Domain-1
    and when an event matches any of the following BB:XX1 or BB:XX2

    and when the event matches xxx

    Rule-2
    and when the domain is one of the following Domain-2
    and when an event matches any of the following BB:XX1 or BB:XX2

    and when the event matches xxx

    That's why we have too many rules and this is now causing a performance problem.

    I can combine these rules to create offense, but that would also involve too many domains, more logs and more EPS.

    Rule-3

    and when the domain is one of the following Domain-1 or Domain-2
    and when an event matches any of the following BB:XX1 or BB:XX2
    and when the event matches xxx

    Here, both for such an example and for your general experience; what should be the best rule optimization scenario in a multi-tenant deployment?

    Thanks.



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    Ali Kerem Gunal
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  • 2.  RE: Best rule optimization - Multi tenant deployment

    Posted Wed June 02, 2021 09:56 AM
    I would recommend a variation of second, wherein you try to map similar data fields from LS of various tenants into similar named fields and then use it to trigger offences basis the concerned domain/tenant

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    Nabojyoti Sarkar
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  • 3.  RE: Best rule optimization - Multi tenant deployment

    Posted Wed June 02, 2021 03:03 PM
    Thanks for reply,
    I understand that right?

    Rule-3

    and when the domain is one of the following Domain-1 or Domain-2

    and when an event matches any of the following BB:XX1 or BB:XX2

    and when the event matches EventID (custom) is any of xxxx

    and NOT when any of Username are contained in any of (Domain1) REF1 or (Domain2) REF2



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    Ali Kerem Gunal
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