enkele vragen over m'n dns server.

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Ik ben bezig een dns server te installeren (alleen caching) op m'n router nu heb ik een vraag:
Hoe zorg ik ervoor dat mijn dns server vanaf internet niet te bereiken is?
Kan dit met een simpel ipchains regeltje of kan ik dit simpel in mijn named.conf instellen?
Dit is mijn named.conf:
options {
directory "/var/named";
/*
* 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;
forward first;
forwarders {
62.108.1.65;
62.108.1.66;
};
};

//
// a caching only nameserver config
//
zone "." {
type hint;
file "root.hints";
};

zone "0.0.127.in-addr.arpa" {
type master;
file "pz/127.0.0";
allow-update { none; };
};

[igmar]

Dit is mijn named.conf:
options {
directory "/var/named";
/*
* 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;

Voeg toe :

listen-on { 192.168.0.1; };

Ip vervangen door IP van de server op je netwerk.

forward first;
forwarders {
62.108.1.65;
62.108.1.66;
};
};

//
// a caching only nameserver config
//
zone "." {
type hint;
file "root.hints";
};

zone "0.0.127.in-addr.arpa" {
type master;
file "pz/127.0.0";
allow-update { none; };
};

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hartstikke bedankt