On Fri, 12 Apr 2002, Suresh Ramasubramanian wrote:
> +++ Shashi Shekhar S [linux-india] <11/04/02 23:57 +0530>:
> > Correct me if I'm wrong!
> > But you could put DNS of both the ISPs into /etc/resolv.conf and configure
> > DNS for caching, so that it will do the same thing (forwarding DNS
> > queries) and also cache the entries ! right ?
>
> Yes. If both ISPs are idiot enough to allow recursive querying for those
> outside their IP blocks.
>
> --srs
>
sorry for the long mail
i have caching name server
caching-nameserver-7.2 installed on
redhat 7.2 enigma
my resolve.conf is
nameserver 127.0.0.1
now my /etc/named.conf has
following configuration.
// generated by named-bootconf.pl
options {
directory "/var/named";
forward first;
/*
dsn for cable
*/
forwarders { 202.164.96.1 ; 203.196.73.5 ; 203.200.45.2; };
///
can i add one more line here puting three more dsn addresses
for my ISDN connection, which is from different ISP
forwarders { 203.115.117.1 ; 203.115.112.2 ; 203.115.112.75 ; };
can these two forwarders be together ?
if yes, how bind will know that if ISDN connection is running it has to
forward from second forwarders ?
right now i am using a script which replace forwarders and then restart named
service...
i havent configure bind beyod this because my primary concern to configure
bind is to
jump between name servers. i set gatway and dsn in all other machine to
192.168.1.1 which
is this machine .. now i have to jump between isps only from this machien .
do i have to modify section below which is a caching only nameserver config ??
///
listen-on { 192.168.1.1 ; 127.0.0.1; };
allow-query { 192.168.1.0/24 ; 127.0.0.1; };
/*
* If there is a firewall between you and nameservers you want
* to talk to, you might need to uncomment the query-source
* directive below. Previous versions of BIND always asked
* questions using port 53, but BIND 8.1 uses an unprivileged
* port by default.
*/
// query-source address * port 53;
};
//
// a caching only nameserver config
//
controls {
inet 127.0.0.1 allow { localhost; } keys { rndckey; };
};
zone "." IN {
type hint;
file "named.ca";
};
zone "localhost" IN {
type master;
file "localhost.zone";
allow-update { none; };
};
zone "0.0.127.in-addr.arpa" IN {
type master;
file "named.local";
allow-update { none; };
};
include "/etc/rndc.key";
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