Apple Mac OS X Server (Administrator’s Guide) Uživatelský manuál stáhnout pdf (Strana 521)

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DNS Service 521

Zone Data Files

Zone data ﬁles consist of paired address ﬁles and reverse lookup ﬁles. Address records link

host names (host1.example.com) to IP addresses. Reverse lookup records do the opposite,

linking IP addresses to host names. Address record ﬁles are named after your domain name–

for example, db.example.com. Reverse lookup ﬁle names look like part of an IP address, such

as db.192.168.12.

By default, the zone data ﬁles are located in

/var/named/

Practical Example

The following example allows you to create a basic DNS conﬁguration using BIND for a

typical network behind a Network Address Translation (NAT) device that connects to an ISP.

The port (cable modem/DSL/dial-up/etc.) that is connected to your ISP is referred to here as

the WAN port. The port that is connected to your internal network is referred to here as the

LAN port. The sample ﬁles you need are installed with Mac OS X Server in the directories

listed in the steps below. This example also assumes the following:

m The IP address of the WAN port is determined by your ISP.

m The IP address of the LAN port is 10.0.1.1

m The IP address of the Mac OS X or Mac OS X Server machine that will be used as the DNS

server is 10.0.1.2.

m The IP addresses for client computers are 10.0.1.3 through 10.0.1.254.

If IP address assignment is provided by the NAT device via DHCP, it needs to be conﬁgured

with the above information. Please consult your router or gateway manual for instructions on

conﬁguring its DHCP Server.

If your NAT device connects to the Internet, you also need to know the DNS server addresses

provided by your ISP.

Setting Up Sample Configuration Files

The sample ﬁles can be found in:

/usr/share/named/examples

The sample ﬁles assume a domain name of example.com behind the NAT. This may be

changed, but must be changed in all modiﬁed conﬁguration ﬁles. This includes renaming

/var/named/db.example.com to the given domain name, for example,

/var/named/db.foo.org.

To set up the sample files:

1 Log in to the DNS server machine as root.

2 Choose Go To Folder from the Go menu.

1 2 ... 516 517 518 519 520 521 522 523 524 525 526 ... 621 622

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