I'm just curious. I was setting up a software firewall to protect my PC from viruses on my large corporate LAN and discovered two
DHCP servers are active. Would I look like a fool asking the IT department about this?

Re: Should there be two DHCP servers on a LAN? by Dave

Dave
Tue Aug 03 10:38:32 CDT 2004

yes. and you may look like a fool for adding a firewall if they do remote
administration of machines on the network.

"BeamGuy" <no@spam.com> wrote in message
news:#Kg3L3WeEHA.3412@TK2MSFTNGP11.phx.gbl...
> I'm just curious. I was setting up a software firewall to protect my PC
from viruses on my large corporate LAN and discovered two
> DHCP servers are active. Would I look like a fool asking the IT department
about this?
>
>



Re: Should there be two DHCP servers on a LAN? by BeamGuy

BeamGuy
Tue Aug 03 11:36:14 CDT 2004

I am on top of administering my PC much more than the IT department, though
they are starting to catch up. They know of my firewall, and I can turn it off if
I need them to unlock a password protected resource. My firewall allows in
VNC, but I changed the password so that I can VNC into it as well.

I installed the firewall after having my system trashed by a virus when I had
ALL the security patches installed - which is about 10-15 more patches than
the average PC around here. The best guess as to how it got in was that it found
out the administrative password.

So - should I assume that two DHCP servers are expected?


"Dave" <noone@nowhere.com> wrote in message news:eV7$w$WeEHA.3680@TK2MSFTNGP11.phx.gbl...
> yes. and you may look like a fool for adding a firewall if they do remote
> administration of machines on the network.
>
> "BeamGuy" <no@spam.com> wrote in message
> news:#Kg3L3WeEHA.3412@TK2MSFTNGP11.phx.gbl...
> > I'm just curious. I was setting up a software firewall to protect my PC
> from viruses on my large corporate LAN and discovered two
> > DHCP servers are active. Would I look like a fool asking the IT department
> about this?
> >
> >
>
>



Re: Should there be two DHCP servers on a LAN? by Robert

Robert
Tue Aug 03 12:32:15 CDT 2004

BeamGuy wrote:
> I am on top of administering my PC much more than the IT department,
> though they are starting to catch up. They know of my firewall, and I
> can turn it off if I need them to unlock a password protected
> resource. My firewall allows in VNC, but I changed the password so
> that I can VNC into it as well.
>
> I installed the firewall after having my system trashed by a virus
> when I had ALL the security patches installed - which is about 10-15
> more patches than the average PC around here. The best guess as to
> how it got in was that it found out the administrative password.
>
> So - should I assume that two DHCP servers are expected?

Sure, in a large network its quite common.

Lets say I have a DHCP scope with 4 Class C address ranges, and a need for
redundancy and/or load balancing DHCP. I'd set my 2 DHCP servers so that one
only handed out addresses from the bottom half of that scope and the other
only handed out addresses from the top half of that scope. In the event of
one server catching fire or something i'd already have a working DHCP server
in place which could pick up the slack, the most i might have to do is make
a small change to allow it to hand out addresses that were previously
covered by its now ill partner.

Any help?

--
--
Rob Moir, Microsoft MVP for servers & security
Website - http://www.robertmoir.co.uk
Virtual PC 2004 FAQ - http://www.robertmoir.co.uk/win/VirtualPC2004FAQ.html

Kazaa - Software update services for your Viruses and Spyware.



Re: Should there be two DHCP servers on a LAN? by Dave

Dave
Tue Aug 03 12:36:09 CDT 2004

yes, most places with any decent size of a network have two dhcp servers.
this is normally done because loss of dns breaks lots of client and server
stuff so its good to have an installed backup.

"BeamGuy" <no@spam.com> wrote in message
news:eWA4$fXeEHA.3732@TK2MSFTNGP11.phx.gbl...
> I am on top of administering my PC much more than the IT department,
though
> they are starting to catch up. They know of my firewall, and I can turn it
off if
> I need them to unlock a password protected resource. My firewall allows in
> VNC, but I changed the password so that I can VNC into it as well.
>
> I installed the firewall after having my system trashed by a virus when I
had
> ALL the security patches installed - which is about 10-15 more patches
than
> the average PC around here. The best guess as to how it got in was that it
found
> out the administrative password.
>
> So - should I assume that two DHCP servers are expected?
>
>
> "Dave" <noone@nowhere.com> wrote in message
news:eV7$w$WeEHA.3680@TK2MSFTNGP11.phx.gbl...
> > yes. and you may look like a fool for adding a firewall if they do
remote
> > administration of machines on the network.
> >
> > "BeamGuy" <no@spam.com> wrote in message
> > news:#Kg3L3WeEHA.3412@TK2MSFTNGP11.phx.gbl...
> > > I'm just curious. I was setting up a software firewall to protect my
PC
> > from viruses on my large corporate LAN and discovered two
> > > DHCP servers are active. Would I look like a fool asking the IT
department
> > about this?
> > >
> > >
> >
> >
>
>



Re: Should there be two DHCP servers on a LAN? by Phillip

Phillip
Tue Aug 03 12:59:11 CDT 2004


"BeamGuy" <no@spam.com> wrote in message
news:eWA4$fXeEHA.3732@TK2MSFTNGP11.phx.gbl...
> I installed the firewall after having my system trashed by a virus when I
had
> ALL the security patches installed - which is about 10-15 more patches
than
> the average PC around here. The best guess as to how it got in was that it
> found out the administrative password.

Virus aren't typicaly stopped by Firewalls, those are the wrong expectations
to have, they are typically stopped by running AV sfotware on the machine to
protect from them.

> So - should I assume that two DHCP servers are expected?

As the other guys said,...yes.

--

Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com



Re: Should there be two DHCP servers on a LAN? by Dave

Dave
Tue Aug 03 13:35:21 CDT 2004

oops, i'm mixing dns and dhcp... bad day here. read the other comments for
someone who is a bit more coherent today.
"Dave" <noone@nowhere.com> wrote in message
news:#rE4bBYeEHA.4068@TK2MSFTNGP11.phx.gbl...
> yes, most places with any decent size of a network have two dhcp servers.
> this is normally done because loss of dns breaks lots of client and server
> stuff so its good to have an installed backup.
>
> "BeamGuy" <no@spam.com> wrote in message
> news:eWA4$fXeEHA.3732@TK2MSFTNGP11.phx.gbl...
> > I am on top of administering my PC much more than the IT department,
> though
> > they are starting to catch up. They know of my firewall, and I can turn
it
> off if
> > I need them to unlock a password protected resource. My firewall allows
in
> > VNC, but I changed the password so that I can VNC into it as well.
> >
> > I installed the firewall after having my system trashed by a virus when
I
> had
> > ALL the security patches installed - which is about 10-15 more patches
> than
> > the average PC around here. The best guess as to how it got in was that
it
> found
> > out the administrative password.
> >
> > So - should I assume that two DHCP servers are expected?
> >
> >
> > "Dave" <noone@nowhere.com> wrote in message
> news:eV7$w$WeEHA.3680@TK2MSFTNGP11.phx.gbl...
> > > yes. and you may look like a fool for adding a firewall if they do
> remote
> > > administration of machines on the network.
> > >
> > > "BeamGuy" <no@spam.com> wrote in message
> > > news:#Kg3L3WeEHA.3412@TK2MSFTNGP11.phx.gbl...
> > > > I'm just curious. I was setting up a software firewall to protect my
> PC
> > > from viruses on my large corporate LAN and discovered two
> > > > DHCP servers are active. Would I look like a fool asking the IT
> department
> > > about this?
> > > >
> > > >
> > >
> > >
> >
> >
>
>