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Saintzev
Saintzev
New Member
April 12, 2017
Question

DNS Error on Fortigate brand new 100E

  • April 12, 2017
  • 3 replies
  • 18133 views

Hi, im having a trouble on a fortinet 100E which doesnt allow me to resolve DNS i tried with a few publics even private DNS and none of them works actually i've a fortinet 80C and its fully functional which i do is MANUALLY copy the whole rules services ports static routes and everything  but still saying on browser DNS_PROBE_FINISHED_BAD_CONFIG, so now im stuck 

because the config is EXACTLY the same of my currently active 80C but doesnt work, could anyone help me ? :(

    3 replies

    MikePruett
    MikePruett
    New Member
    April 12, 2017

    The Gate itself doesn't resolve DNS or devices behind the Gate doesn't resolve DNS?

    Saintzev
    SaintzevAuthor
    New Member
    April 12, 2017

    when i use the CLI ping to IP google DNS its ok, even in laptops behind the FW are ok, cant remember right now if from the CLI resolve the name , now we're in production where i work so later im going to test again and will update , thanks for your response ! 

    ede_pfau
    SuperUser
    ede_pfau
    SuperUser
    April 12, 2017

    Check config error in the CLI with "diag deb conf read".

    It might not harm to re-enter the System DNS. After that, you should be able to "exec ping <name.com>" from the CLI.

    If that is working but your hosts cannot resolve names: check that you have a DNS server defined for each interface with hosts (usually, "internal"). Activate the feature "DNS database" first, then click System > DNS server to define resolver on one or more interfaces. Use "forward to system DNS" if you don't use local DNS entries.

    rwpatterson
    rwpatterson
    New Member
    April 12, 2017

    Saintzev wrote:
    actually i've a fortinet 80C and its fully functional which i do is MANUALLY copy the whole rules services ports static routes and everything
    Single question. Are both Fortigates running the same level of code when you copied and pasted?

    Saintzev
    SaintzevAuthor
    New Member
    April 12, 2017

    we'll im back thank you guys for your answers , now i see the only thing i get the DNS resolve is adding MANUALLY the DNS on my computer ( any public dns works ) but i need a way to do it automaticaly, beside this the actual running fortinet 80 does it right but the new one doesnt propagate the DNS, and in this new interface i cant see an option that helps me to solve it 

    what i'm missing in this case ?

     

    ede_pfau
    SuperUser
    ede_pfau
    SuperUser
    April 13, 2017

    You have not defined any DNS server on the 'internal' or 'lan' interface. Please check my last post.

    Liviagreig
    Liviagreig
    New Member
    April 5, 2019

    Saintzev wrote:

    Hi, im having a trouble on a fortinet 100E which doesnt allow me to resolve DNS i tried with a few publics even private DNS and none of them works actually i've a fortinet 80C and its fully functional which i do is MANUALLY copy the whole rules services ports static routes and everything  but still saying on browser DNS_PROBE_FINISHED_BAD_CONFIG, so now im stuck 

    because the config is EXACTLY the same of my currently active 80C but doesnt work, could anyone help me ? :(

    I would suggest you to try changing DNS server settings and then check for the error I am sure it will resolve the issue. Here you'll get step by step process to do it.

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