View source for OPS535 Advanced DNS

[[Category:OPS535]]
* DNS Logging
** logging Statement Definition and Usage
<pre>
Sample:
    logging {
            channel default_debug {
                    file "data/named.run";
                    severity dynamic;
            };
    };
</pre>

* Dynamic DNS
** Dynamic Zone - Allow-update
** Dynamic DNS update using nsupdate 
<pre>
Man Page:
         nsupdate is used to submit Dynamic DNS Update requests as defined in RFC 2136 to a name server. This allows resource records to be added or removed from a zone without manually editing the zone file. A single update request can contain requests to add or remove more than one resource record.
</pre>
* TSIG - Transaction SIGnatures
** BIND primarily supports TSIG for server to server communication.
** TSIG can also be useful for dynamic update.The nsupdate program supports TSIG via the -k and -y command line options or inline by use of the key. 
* DNSSEC
** Cryptographic authentication of DNS information is possible through the DNS Security (DNSSEC-bis) extensions, defined in RFC 4033, RFC 4034, and RFC 4035.
** [https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/security_guide/sec-securing_dns_traffic_with_dnssec Securing DNS with DNSSEC]