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| Chapter 21 DNS |
| Table 137 ADVANCED > DNS > System DNS | |
| LABEL | DESCRIPTION |
| Name Server | A name server record contains a DNS server’s IP address. The ZyWALL can |
| Record | query the DNS server to resolve domain names for features like VPN, DDNS |
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| and the time server. |
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| When the ZyWALL needs to resolve a domain name, it checks it against the |
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| name server record entries in the order that they appear in this list. |
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| A “*” indicates a name server record without a domain zone. The default record |
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| is grayed out. The ZyWALL uses this default record if the domain name that |
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| needs to be resolved does not match any of the other name server records. |
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| A name server record with a domain zone is always put before a record without |
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| a domain zone. |
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| # | This is the index number of the name server record. |
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| Domain Zone | A domain zone is a fully qualified domain name without the host. For example, |
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| zyxel.com.tw is the domain zone for the www.zyxel.com.tw fully qualified |
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| domain name. |
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| From | This field displays whether the IP address of a DNS server is from a WAN |
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| interface (and which it is) or specified by the user. |
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| DNS Server | This is the IP address of a DNS server. |
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| Modify | Click a triangle icon to move the record up or down in the list. |
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| Click the edit icon to go to the screen where you can edit the record. |
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| Click the delete icon to remove an existing record. A window display asking you |
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| to confirm that you want to delete the record. Note that subsequent records |
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| move up by one when you take this action. |
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| Insert | Click Insert to open a screen where you can insert a new name server record. |
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| Refer to Table 139 on page 433 for information on the fields. |
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Click Add in the System screen to open this screen. Use this screen to add an address record.
An address record contains the mapping of a fully qualified domain name (FQDN) to an IP address. Configure address records about the ZyWALL itself or another device to keep a record of DNS names and addresses that people on your network may use frequently. If the ZyWALL receives a DNS query for an FQDN for which the ZyWALL has an address record, the ZyWALL can send the IP address in a DNS response without having to query a DNS name server. See Section 21.4 on page 428 for more on address records.
Figure 265 ADVANCED > DNS > Add (Address Record)
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