Zónaátvitelként

Zónaátvitelként, a Hungarian term, translates to "as zone transfer" in English. This concept is fundamental in the Domain Name System (DNS) and refers to the process of replicating DNS zone data from a primary DNS server to secondary DNS servers. When a change is made to a DNS zone on a primary server, such as updating an IP address for a domain name, this alteration needs to be propagated to all secondary servers that hold a copy of that zone. The zónaátvitelként process is how this synchronization is achieved.

Secondary DNS servers initiate these zone transfers from the primary server. The primary server, upon detecting changes, can also be configured to notify secondary servers of updates, prompting them to request a zónaátvitelként. This ensures that all DNS servers authoritative for a given zone have identical and up-to-date records. This redundancy and data consistency are crucial for the reliable operation of the internet, as it allows for faster lookups and provides failover capabilities if one server becomes unavailable. The transfer itself can occur using the DNS protocol, typically over TCP port 53, and involves sending the entire zone file or incremental updates. Efficient zónaátvitelként mechanisms are vital for maintaining the integrity and responsiveness of DNS resolution services globally.