Concise Guide to DNS and BIND, The

Chapter 14. A Guide to BIND 4

BIND 4 is a dead-end, as far as development goes. The ISC is not developing it, and the only possible reason to run it is that some policy, such as "use only vendor supported software," forces you to use a UNIX-vendor supplied version of BIND. In many cases, this means you must use BIND 4. That doesn't necessarily completely limit you to BIND 4, though, because the ISC sells support contracts to BIND users, and you can, in fact, have a vendor-supported BIND 8. See the site at http://www.isc.org/ for more information. If that still is not enough to upgrade to BIND 8, be aware that BIND 4 has security problems that your OS vendor might or might not have done anything to fix in the version you have. (Actually, some ...