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Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

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Chapter 11: DNS (Domain Name System)<br />

Configuring hosted DNS servers<br />

328<br />

2 To enable the allow-query option, select the corresponding check box.<br />

Selecting this option affects who is able to query this zone. The options are<br />

the following:<br />

• If not selected, all requesters are authorized to query the zone. This is<br />

the default.<br />

• If selected and contains IP addresses, only the requesters defined in the<br />

allow-query list will be authorized to query this zone. Use the New and<br />

Delete buttons to modify this list. See “Adding an IP address” on page<br />

325 for details on using the New button.<br />

Note: If you select this option, be sure to include all IP addresses that might<br />

need to query the zone, such as the heartbeat burbs’ IP addresses,<br />

loopback addresses, etc.<br />

3 To enable the allow-update option, select the corresponding check box.<br />

Selecting this option allows you to specify from whom the zone will accept<br />

dynamic DNS updates. If this option is selected, only the hosts in the allowupdate<br />

list are authorized to update this zone. This option is only valid for<br />

master zones. Use the New and Delete buttons to modify this list. See<br />

“Adding an IP address” on page 325 for details on using the New button.<br />

By default the allow-update option is not selected, meaning the server will<br />

deny updates from all hosts.<br />

4 To enable the allow-transfer option, select the corresponding check box.<br />

Selecting this option allows you to limit who is authorized to request zone<br />

transfers from this zone.<br />

• If not selected, all requesters are authorized to transfer this zone from<br />

the name server. This is the default.<br />

• If selected and no IP addresses are added, no requesters will be<br />

authorized to transfer this zone from the name server.<br />

• If selected and contains IP addresses, only the requesters defined in the<br />

allow-transfer list will be authorized to transfer the zone from the name<br />

server. Use the New and Delete buttons to modify this list. See “Adding<br />

an IP address” on page 325 for details on using the New button.

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