, , , and give sample files for a name server at the brewery, located on vlager. Owing to the nature of the network discussed (a single LAN), the example is pretty straightforward. If your requirements are more complex, and you can't get named going, get ``DNS and BIND'' by Cricket Liu and Paul Albitz ([]).
The named.ca cache file shown in figure- shows sample hint records for a root name server. A typical cache file usually describes about a dozen name servers, or so. You can obtain the current list of name servers for the root domain using the nslookup tool described toward the end of this chapter.
;
; /var/named/named.ca Cache file for the brewery.
; We're not on the Internet, so we don't need
; any root servers. To activate these
; records, remove the semicolons.
;
; . 99999999 IN NS NS.NIC.DDN.MIL
; NS.NIC.DDN.MIL 99999999 IN A 26.3.0.103
; . 99999999 IN NS NS.NASA.GOV
; NS.NASA.GOV 99999999 IN A 128.102.16.10
;
; /var/named/named.hosts Local hosts at the brewery
; Origin is vbrew.com
;
@ IN SOA vlager.vbrew.com. (
janet.vbrew.com.
16 ; serial
86400 ; refresh: once per day
3600 ; retry: one hour
3600000 ; expire: 42 days
604800 ; minimum: 1 week
)
IN NS vlager.vbrew.com.
;
; local mail is distributed on vlager
IN MX 10 vlager
;
; loopback address
localhost. IN A 127.0.0.1
; brewery Ethernet
vlager IN A 191.72.1.1
vlager-if1 IN CNAME vlager
; vlager is also news server
news IN CNAME vlager
vstout IN A 191.72.1.2
vale IN A 191.72.1.3
; winery Ethernet
vlager-if2 IN A 191.72.2.1
vbardolino IN A 191.72.2.2
vchianti IN A 191.72.2.3
vbeaujolais IN A 191.72.2.4
;
; /var/named/named.local Reverse mapping of 127.0.0
; Origin is 0.0.127.in-addr.arpa.
;
@ IN SOA vlager.vbrew.com. (
joe.vbrew.com.
1 ; serial
360000 ; refresh: 100 hrs
3600 ; retry: one hour
3600000 ; expire: 42 days
360000 ; minimum: 100 hrs
)
IN NS vlager.vbrew.com.
1 IN PTR localhost.
Figure: The named.rev file
;
; /var/named/named.rev Reverse mapping of our IP addresses
; Origin is 72.191.in-addr.arpa.
;
@ IN SOA vlager.vbrew.com. (
joe.vbrew.com.
16 ; serial
86400 ; refresh: once per day
3600 ; retry: one hour
3600000 ; expire: 42 days
604800 ; minimum: 1 week
)
IN NS vlager.vbrew.com.
; brewery
1.1 IN PTR vlager.vbrew.com.
2.1 IN PTR vstout.vbrew.com.
3.1 IN PTR vale.vbrew.com.
; winery
1.2 IN PTR vlager-if1.vbrew.com.
2.2 IN PTR vbardolino.vbrew.com.
3.2 IN PTR vchianti.vbrew.com.
4.2 IN PTR vbeaujolais.vbrew.com.