One dhcp server multiple DNS
suhaime at hotmail.com
Thu May 22 01:32:14 UTC 2008
Sorry for the lack of information
So hear the full situation
in my dhcpd.conf config i have set a group of static ips (192.168.1.1-180) and the rest is obtain via normal DHCP process. Clients who obtain IPs via the static IPs are internet enabled client whereas the rest is non-internet enabled clients.
I am wondering whether the statement
can be repeated for the block of IPs pool i.e. 192.168.1.181-254
> Date: Wed, 21 May 2008 10:29:12 +0100
> To: dhcp-users at isc.org
> From: dhcp1 at thehobsons.co.uk
> Subject: Re: One dhcp server multiple DNS
> Suhaime Raeze wrote:
> >I have this situation I have two DNS server one for internal use
> >another for external access. I have users which can bypass the proxy
> >and using the IM such gtalk and yahoo messenger. Question is: Can I
> >have two set of dhcp settings in one server? One settings pointing
> >to internal DNS and another pointing to external DNS. Without
> >external access I can block the usage of IM in my environment
> Sorry, I just don't understand that question !
> What do you mean by "two set of dhcp settings" ?
> Do you mean give different settings to different clients ? The answer
> to that is yes, but you need to define what you want given to what.
> If you want to prevent users bypassing your proxy etc, then the way
> to do that is to block outbound access to DNS servers other than your
> own official ones. Once you do that, then you can control what the
> DNS hands out. But don't forget that people can bypass that by
> entering an IP address instead of a hostname.
> In general, if you want to control something like that, the firewall
> is the place to do it (or policies on the desktops) - DHCP is not a
> security tool and can be easily bypassed.
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