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kogia
New Member
September 23, 2013
Question

Security Profiles Precedence

  • September 23, 2013
  • 7 replies
  • 20897 views
Hello FortiCommunity, I would like to know if application control has precedence over Web filter. Consider the following scenario: Policy with web filter which blocks www.facebook.com & also application control sensor which blocks Facebook. Will there be a disclaimer from Web filter or the application control will simply block the packets?

    7 replies

    Devendra_Palan
    New Member
    October 15, 2013
    Hi Kogia, Your web filter will simply block facebook.com
    kelv1n
    New Member
    August 15, 2015

    I believe this is wrong - The Application Control will execute first, so packets will likely just be blocked.. got a similar issue myself!

    emnoc
    New Member
    August 15, 2015

    In this case I believe app-control will hot first but diag debug flow is your friend

    vjoshi_FTNT
    Staff
    Staff
    August 24, 2015

    First would be Web filtering. Logic is, say we have a URL exempted on the Webfilter and you will see it will exempt all the scanning.

    Also, a URL which is blocked at first place, scanning for all the application control signatures makes no sense.

     

    Only if the URL is allowed, then the scanning of it with all the signatures for that URL is a worth

    emnoc
    New Member
    August 24, 2015

    Are we 100% sure on that?

     

    What if the  url wasn't categorized to begin with ( yes or in  the wrong category ) ?  ( assuming no manual or static entries where include the web-filter )?

     

    We know in the flow or life of the packet, it has to look at layer3 route, policy, and security profile to determine what we inspect, but if you had app-control and url filtering and use a mask url, I think app-control would be the  final trump.

     

    http://docs-legacy.fortinet.com/fos50hlp/50/index.html#page/FortiOS%25205.0%2520Help/life_of_packet.170.11.html#ww1064381

     

     

    vjoshi_FTNT
    Staff
    Staff
    August 31, 2015

    My understanding was wrong.

     

    The correct flow of the UTM sequence is :

     

    IPS > App Control > Email Filtering > Web Filtering > AV

     

     

     

    mramon79
    New Member
    September 10, 2015

    Hi,

     

     The Fortigate Documents about traffic flow  indicate that Webfilter acts before Applifilter...but this in only truth in firewall mode, if you use the Fortigate in explicit proxy mode the applifilter goes first.

    I Opened a ticket to the support and after show them i was completely right, i suggested to modify the Official Documentation but i think they are not going to to that.

     

    Regards

     

    FortiAdam
    New Member
    October 19, 2015

    @mramon79 shared some important info to keep in mind for this topic.  Here is the latest "life of a packet" document from Fortinet but I'm guessing they didn't include his suggested edits.  http://docs.fortinet.com/...igate-life-of-a-packet

    kcerb
    New Member
    February 22, 2016