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Host Not Found

Robert Hartung

We recently got a backup appliance that is used for both servers and workstations. I need some advice on how to configure our SG 310 to allow access.

 

To manage individual servers and workstations, you need to access them through a web browser through a particular port. For example

https://Workstation01:8014

https://Workstaion02:8014

https://Server01:8014

etc...

Currently, the SG310 is not allowing access, showing the following error.

An error occurred while handling your request

While trying to retrieve the URL:
https://keriomail:8014/
The content could not be delivered due to the following condition:
Host not found
 
 
We have Active Directory and I have put our DNS server in the DNS Forwarders list in Sophos. This particular host is also defined as a host in the Definitions - Network Definitions as well.
 
What am I missing?

 
 
 
 
 
 


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  • 0

    Right now, your problem is the unqualified host name.   Use the FQDN so UTM knows how to resolve the name.

    Then you need to allow access to the nonstandard ports in your web filter.

  • 0 in reply to DouglasFoster

    DouglasFoster said:

    Right now, your problem is the unqualified host name.   Use the FQDN so UTM knows how to resolve the name.

    Then you need to allow access to the nonstandard ports in your web filter.

     

     

    As far as the non-standard port, I was able to fix that by entering it in the Web Protection - Filtering Options - Misc - Allowed Target Services. That turned out to be the easy part.

    The FQDN suggestion did fix the issue. Thanks.

    From within the administrative web interface for the backup appliance, you are able to launch a session with individual workstations or servers. When I setup the PCs everything defaulted to just the DNS name but I was able to edit them to include the FQDN name.

    Is there any way to tell the SG 310 that an address is local other than by an FQDN? Since our MS Active Directory DNS server has all the local names defined, why is it necessary to use the FQDN?

  • 0 in reply to Robert Hartung

    I know that lots of techs prefer shortnames and generally speaking in a network that is has one site with a handful of users you can get away with it.  An unqualified name just forces the host to find a qualified name via the suffix list and if it cannot find it in that manner it fails.

    So if the SG310 failed it could be that it does not have properly configured suffix.

    Besides, it just good form to use FQDN's for everything that you do with an eye to those who come after you.

    John

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  • 0 in reply to Robert Hartung

    I know that lots of techs prefer shortnames and generally speaking in a network that is has one site with a handful of users you can get away with it.  An unqualified name just forces the host to find a qualified name via the suffix list and if it cannot find it in that manner it fails.

    So if the SG310 failed it could be that it does not have properly configured suffix.

    Besides, it just good form to use FQDN's for everything that you do with an eye to those who come after you.

    John

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