[c-nsp] Cisco Access List DNS redirect

Daniel Ginsburg dg at ot-e.biz
Sun Feb 12 06:31:37 EST 2006


Alexander C. Fossa пишет:
> Hi All,
>
>  
>
>  
>
> Just a quick question... I'm trying to make a cisco access list do the
> following but failing miserably.
>
>  
>
> Any DNS requests out of the dialer0 interface are re-addressed to a
> specific DNS server. So if the client can put whatever he wants as his
> DNS server on his local machine, but the router redirects everything to
> my DNS server.
>
>  
>
> Is it possible? I've tried access lists with a route-map but not having
> any success :-( 
You can dNAT all the DNS request coming from dialer0 to your DNS
server's IP. But you'd better be carefull, redirecting all DNS requests
to your DNS server (either by means of PBR or NAT) breaks some DNS
features your clients might want to use.

-- 
dg


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