Re: IOS DNS

thank you all.

On Sat, Feb 16, 2013 at 12:51 AM, Marko Milivojevic <markom_at_ipexpert.com>wrote:

> I'm glad you brought that up. I wrote an article on that subject
> sometime ago. Folk may find it useful:
>
> http://blog.ipexpert.com/2011/03/07/dns-and-split-dns-on-ios/
>
> --
> Marko Milivojevic - CCIE #18427 (SP R&S)
> Senior CCIE Instructor / Managing Partner - IPexpert
>
> On Fri, Feb 15, 2013 at 12:31 PM, Brian McGahan <bmcgahan_at_ine.com> wrote:
> > One useful feature for smaller environments where IOS DNS is
> applicable is that you could use the router as your DNS proxy. For example
> you have your DHCP server assign the router as the DNS server for clients,
> and then on the router you point to a public DNS server like 8.8.8.8. Then
> if you want custom split DNS entries, like www.domain.local or something
> you can put them in the router with the ip host command, and you can also
> do very simple content filtering. I.e. you could configure the router to
> point www.facebook.com to 127.0.0.1 if you want to block it. This of
> course is a lot easier to get around than deep packet inspection, but it's
> also a lot less resource intensive than NBAR or DPI if your edge router
> isn't that powerful.
> >
> >
> >
> > Brian McGahan, CCIE #8593 (R&S/SP/Security)
> > bmcgahan_at_INE.com
> >
> > Internetwork Expert, Inc.
> > http://www.INE.com
> >
> >
> >
> > -----Original Message-----
> > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> marc edwards
> > Sent: Friday, February 15, 2013 1:48 PM
> > To: reza
> > Cc: Cisco certification
> > Subject: Re: IOS DNS
> >
> > I agree with Brian on best DNS practice to use bind but if for whatever
> reason a router is being used as DNS server (perhaps for other routers...)
> >
> > documentation is in doc CD under IP addressing
> >
> >
> http://www.cisco.com/en/US/docs/ios-xml/ios/ipaddr_dns/configuration/12-4t/dns-12-4t-book.html
> >
> > pretty straight forward stuff. In practice, I usually 'no ip
> domain-lookup' on devices because it becomes an annoyance. For router to be
> DNS client this needs to be activated. specify a server with the ip
> name-server x.x.x.x command. Ensure the the router acting as server has
> host entry that is trying to be resolved. Not much more to it.
> >
> > HTH
> >
> > Marc
> >
> > On Fri, Feb 15, 2013 at 11:15 AM, reza <reza_at_lethalnetworks.com> wrote:
> >> Hey all,
> >> I've found the FreeBSD Handbook to be a good reference point for
> DNS/BIND.
> >>
> >> http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/network-dns.
> >> html
> >>
> >> ----- Original Message -----
> >> From: "Imran Ali" <immrccie_at_gmail.com>
> >> To: "Cisco certification" <ccielab_at_groupstudy.com>
> >> Sent: Friday, February 15, 2013 1:43:26 AM
> >> Subject: IOS DNS
> >>
> >> Hi all,
> >>
> >> comming from routing and switching background ,it is taking some time
> >> to get IOS DNS stuff.
> >>
> >> Any good generic DNS links you have ? even though i am googleing
> >> ...(authorative DNS , zones, RRs , DDNS ,etc )
> >>
> >>
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> >>
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> >
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Received on Sat Feb 16 2013 - 08:28:14 ART