DNS zone transfer

It is one of the many mechanisms available for administrators to replicate DNS databases across a set of DNS servers.

Examples of such mechanisms include DNS zone transfers and file transfer protocols.

DNS zone transfer, also sometimes known by the inducing DNS query type AXFR, is a type of DNS transaction.

TCP is also used for tasks such as zone transfers.

The preamble comprises a lookup of the Start of Authority (SOA) resource record for the "zone apex", the node of the DNS namespace that is at the top of the "zone".

A Start of Authority record (abbreviated as SOA record) is a type of resource record in the Domain Name System (DNS) containing administrative information about the zone, especially regarding zone transfers.

* List of DNS record types

DNS zone transfer, also sometimes known by the inducing DNS query type AXFR, is a type of DNS transaction.

It is one of the many mechanisms available for administrators to replicate DNS databases across a set of DNS servers.

A zone transfer uses the Transmission Control Protocol (TCP) for transport, and takes the form of a client–server transaction.

A zone transfer uses the Transmission Control Protocol (TCP) for transport, and takes the form of a client–server transaction.

The portion of the database that is replicated is a zone.

Zone transfer operates in terms of "wire format" resource records, i.e. resource records as they are transferred using the DNS protocol.

However, the schema of wire format resource records may not be identical to the database schema used by the back ends of the DNS servers themselves.

This is the case for djbdns, for example.

Modern DNS server packages with sophisticated database back ends such as SQL servers and Active Directory allow administrators to make updates to the database in multiple places (such systems employ Multi-master replication), with the database back end's own replication mechanism handling the replication to all other servers.

Modern DNS server packages with sophisticated database back ends such as SQL servers and Active Directory allow administrators to make updates to the database in multiple places (such systems employ Multi-master replication), with the database back end's own replication mechanism handling the replication to all other servers.

Modern DNS server packages with sophisticated database back ends such as SQL servers and Active Directory allow administrators to make updates to the database in multiple places (such systems employ Multi-master replication), with the database back end's own replication mechanism handling the replication to all other servers.

Serial number comparisons are intended to use Serial Number Arithmetic as defined in RFC 1982.

This is because information such as server hostnames may become public knowledge, which can be used to discover information about an organization and even provide a larger attack surface.

Other standards (not DNSSEC) are used to secure bulk data (such as a DNS zone transfer) sent between DNS servers.

Usage of an RPZ is based on DNS data feeds, known as zone transfer, from an RPZ provider to the deploying server.

EveryDNS also offered dynamic DNS resolution, AXFR service, and domain2web redirection.

Zone transfers and update notifications are supported, and the processes can run unprivileged and chrooted.