Red Hat Enterprise Linux 5 Administration Unleashed

354CHAPTER 16Hostname Resolution with BINDReplace with one of the following:. default: Set which channels to use if none are set for a category. If this category isnot defined, the default_syslog and default_debug predefined channels are usedfor other nondefined categories.. general: Messages that don’t fall into any of the other categories are in this category.. database: Messages about the internal database used by named to keep track ofzones and cache data.. security: Messages about whether requests are approved or denied.. config: Messages about the configuration file such as syntax errors.. resolver: Messages about DNS resolution.. xfer-in: Messages about zone transfers received by the server.. xfer-out: Messages about zone transfers sent by the server.. notify: Messages about the NOTIFY protocol.. client: Messages about client requests.. unmatched: Messages for which there is no matching view or for which the daemoncan’t figure out the class. If a message is in this category, a one line message is alsoset to the client category. By default, these messages are sent to the null channel.. network: Messages about network operations.. update: Messages about dynamic updates.. update-security: Messages about whether update requests were approved or denied.. queries: Messages about queries, including the IP address and port of the client,query name, class, and type.. dispatch: Messages about the dispatching of incoming packets to the servermodules.. dnssec: Messages about the DNSSEC and TSIG protocols.. lame-servers: Messages about the lame servers.. delegation-only: Messages about log queries forced to NXDOMAIN from thedelegation-only zone and a delegation-only in a hint or stub zone.SummaryThis chapter explains DNS and the BIND implementation of the name server. Informationsuch as access control lists and logging preferences can be set in the BIND configuration file,named.conf. The /etc/rndc.conf file customizes the name server control utility rndc, whilezone files are located in the /var/named/ directory. If you prefer a graphical tool, thesystem-config-bind utility provides a graphical interface to the same configuration options.