Sophos xg can't resolve own hostname and internal server

Hello all,

I am currently trying to configure Sophos xg to replace my Fritzbox.

From problems with certificates, I have become aware that my DNS resolution for internal hosts and the xg itself is not working.

Currently I have only a test client, which has the xg entered as the default gateway and DNS server.

When accessing blocked websites I always had problems with the certificate and had read somewhere that I should choose the hostname of the firewall as redirection page so that there are no problems with the CN.
Here I found out that I can not make a ping on the name of the XG. Now I added the XG as DNS-HOST, but it still does not work. Also other host, which are meanwhile also registered as DNS host I can not reach via ping.

Does anyone have an idea what I have configured wrong?

Many greetings
Marc



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[edited by: emmosophos at 5:46 PM (GMT -7) on 23 Aug 2021]
Parents
  • The problem is solved.

    I only have 8.8.8.8 in the DNS settings. The internal DNS entries are still found.

    It was important for me that all DNS hosts were specified as complete domain names. For example:

    host1.myhome.local
    host2.myhome.local
    host3.myhome.local

    In the DHCP settings I then had to specify the domain name myhome.local.

    Now it works to ping on host1 or also on host1.myhome.local

Reply
  • The problem is solved.

    I only have 8.8.8.8 in the DNS settings. The internal DNS entries are still found.

    It was important for me that all DNS hosts were specified as complete domain names. For example:

    host1.myhome.local
    host2.myhome.local
    host3.myhome.local

    In the DHCP settings I then had to specify the domain name myhome.local.

    Now it works to ping on host1 or also on host1.myhome.local

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