I was wondering if someone would be as so kind to point me in the right
direction for what I am trying to achieve.

Basically I have local clients that are a mixture of windows and linux,
these clients need to be able to access the internet for updates and so on,
but to also access services that are on the local network by a hostname
that has been setup correctly I believe on the local DNS server.

The clients are able to use the dns server when specified as a nameserver
on linux in the resolv.conf file and as a dns server on windows, I have
only tested this with the linux clients at present but when they are using
the local dns server as the sole name server the linux clients can do an
nslookup on domains such as google for example, and get google's ip
address.  So it would seem as that internet access works, but when trying
to do updates from apt-get this fails as ***.debian.org fails to resolve to
an ip address, and nslookup debian.org doesn't work, no ip address is

The local domain and subdomains that are setup on the local dns server do
work, the clients are able to access the correct services, in order for the
linux clients to do updates the isp name servers have to be put back in
resolv.conf then updates work, and then the file has to be changed back to
the local dns server once again.

I have followed the ubuntu guide at the link below, and yes I realise I am
not using ubuntu and using debian instead, but as these are both debian
like and/or based distro's I didn't think it would be an issue.


I am not sure if this is relevant, but each server and client has two
network cards the first network card is for internet access only and DHCP
addresses are provided to that card, the other network card is access to a
vlan that the servers and other clients are on, no internet access is
possible through the second network card.  This setup isn't something that
can be changed and so the solution would need to work with this setup.

If someone is able to point in the right direction I would be ever so

Thank you.


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