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James2000k
James2000k
New Member
March 23, 2017
Question

Does anyone know where in the running config to find where the udp port setting is.

  • March 23, 2017
  • 2 replies
  • 14635 views

My ISP provider said my cable modem is resetting itself and to check that the UDP port  on the Fortigate is not on port 53 and to put it to another port

 

FG-60D

    2 replies

    MikePruett
    MikePruett
    New Member
    April 3, 2017

    Hey James, just replied to your PM. Sorry I didn't catch this earlier.

     

    FortiGuard going out over 53 is causing the modem to reboot. Certian providers freak out when they see that. If you switch it to 8888 it will work fine.

    emnoc
    emnoc
    New Member
    April 3, 2017

    Yes this is a known issue. Fortiguard runs on a well-known  service port BUT it is not DNS. Firewall, IPS, and DNS proxies could all act strange if it expects DNS format request/response and the traffic does not match so.

     

    Ken

     

    James2000k
    James2000kAuthor
    New Member
    April 6, 2017

    Hi Ken

     

    Thanks for the info. So are you saying more harm can be done than good if the port is changed from 53 and how many placing in the configuration would i have to make this change in the port config.

     

    rwpatterson
    rwpatterson
    New Member
    April 4, 2017

    James2000k wrote:

    My ISP provider said my cable modem is resetting itself and to check that the UDP port  on the Fortigate is not on port 53 and to put it to another port

     

    FG-60D

    In the GUI, browse to "Config", "Fortiguard", then click the blue arrow next to  "Web Filtering and Email Filtering Options". When this drops down you will see the option to switch the port from 53 to 8888. The "Test Availability" button is right next to it.

     

    Hope that helps

     

    Bob

    James2000k
    James2000kAuthor
    New Member
    April 6, 2017

    Thanks for the info Bob.  Out of curiosity is the user interface easy to navigate thru and what recommending reading would you suggest for the FG-60D

     

     

    rwpatterson
    rwpatterson
    New Member
    April 6, 2017

    James2000k wrote:

    Thanks for the info Bob.  Out of curiosity is the user interface easy to navigate thru and what recommending reading would you suggest for the FG-60D

    Once you wrap your head around the Forti-layout it gets very intuitive for the most part. Having a networking background certainly helps. You may have to learn a slightly different Forti-layout every major revision change, but it's no show stopper. You'll pick up on the flow pretty quickly.

     

    <aside>Forti-layout is a term I just invented for the menu layout in the Fortigate world of firewalls. You probably won't find it anywhere else. ;-)</aside>

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