;. 3600000 NS F.ROOT-SERVERS.NET.
;F.ROOT-SERVERS.NET. 3600000 A 192.5.5.241
;. 3600000 NS G.ROOT-SERVERS.NET.
;G.ROOT-SERVERS.NET. 3600000 A 192.112.36.4
;. 3600000 NS H.ROOT-SERVERS.NET.
;H.ROOT-SERVERS.NET. 3600000 A 128.63.2.53
;. 3600000 NS I.ROOT-SERVERS.NET.
;I.ROOT-SERVERS.NET. 3600000 A 192.36.148.17
;. 3600000 NS J.ROOT-SERVERS.NET.
;J.ROOT-SERVERS.NET. 3600000 A 198.41.0.10
;. 3600000 NS K.ROOT-SERVERS.NET.
;K.ROOT-SERVERS.NET. 3600000 A 193.0.14.129
;. 3600000 NS L.ROOT-SERVERS.NET.
;L.ROOT-SERVERS.NET. 3600000 A 198.32.64.12
;. 3600000 NS M.ROOT-SERVERS.NET.
;M.ROOT-SERVERS.NET. 3600000 A 202.12.27.33
;
Example 6.11: The named.hosts File
;
; /var/named/named.hosts Local hosts at the brewery
; Origin is vbrew.com
;
@ IN SOA vlager.vbrew.com. janet.vbrew.com. (
2000012601; 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
;
; Virtual Brewery Ethernet
vlager IN A 172.16.1.1
vlager-if1 IN CNAME vlager
; vlager is also news server
news IN CNAME vlager
vstout IN A 172.16.1.2
vale IN A 172.16.1.3
;
; Virtual Winery Ethernet
vlager-if2 IN A 172.16.2.1
vbardolino IN A 172.16.2.2
vchianti IN A 172.16.2.3
vbeaujolais IN A 172.16.2.4
;
; Virtual Spirits (subsidiary) Ethernet
vbourbon IN A 172.16.3.1
vbourbon-if1 IN CNAME vbourbon
Example 6.12: The named.local File
;
; /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.
Example 6.13: The named.rev File
;
; /var/named/named.rev Reverse mapping of our IP addresses
; Origin is 16.172.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-if2.vbrew.com.
2.2 IN PTR vbardolino.vbrew.com.
3.2 IN PTR vchianti.vbrew.com.
4.2 IN PTR vbeaujolais.vbrew.com.
Verifying the Name Server Setup
nslookup is a great tool for checking the operation of your name server setup. It can be used both interactively with prompts and as a single command with immediate output. In the latter case, you simply invoke it
