> hello all, > > i am trying to make DNS server. i wanna knw diffrence b/w > domain and zone? > > exat mean of TTL. > > thanks For the most part, domain and zone are interchangeable terms. TTL is how long the entry will live in the cache of another name server after it's done a query against your name server. For example...a DSL customer is configured to use their ISP's domain server. They want to visit www.yourdomain.com, your DNS server hosts the yourdomain.com domain, and you've set the TTL for yourdomain.com to 30 minutes. The DSL customer inputs http://www.yourdomain.com into their web browser. Their PC makes an inquiry to the ISP's DNS server for www.yourdomain.com. Then, the ISP's DNS server contacts your DNS server for www.yourdomain.com. Now, the ISP's DNS server will cache the IP for www.yourdomain.com for 30 minutes, so that subsequent lookups don't have to go any farther than their DNS server. After 30 minutes have passed, the next query for www.yourdomain.com that is presented to the ISP's DNS server will again be passed to your DNS server. -- Mike Burger http://www.bubbanfriends.org Visit the Dog Pound II BBS telnet://dogpound2.citadel.org or http://dogpound2.citadel.org To be notified of updates to the web site, visit: https://www.bubbanfriends.org/mailman/listinfo/site-update or send a blank email message to: site-update-subscribe@xxxxxxxxxxxxxxxxx -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
