Chapter 17 Inbound Load Balancing

Figure 147 Configuration > Network > Inbound LB > Add

The following table describes the labels in this screen.

Table 93 Configuration > Network > Inbound LB > Add/Edit

LABEL

DESCRIPTION

Create New Object

Use this to configure any new setting objects that you need to use in this screen.

 

 

General Settings

 

 

 

Enable

Select this to enable this DNS load balancing rule.

 

 

DNS Setting

 

 

 

Query Domain Name

Type up to 255 characters for a domain name for which you want the ZyWALL to

 

manage DNS load balancing. You can use a wildcard (*) to let multiple domains

 

match the name. For example, use *.example.com to specify any domain name that

 

ends with “example.com” would match.

 

 

Time to Live

Enter the number of seconds the ZyWALL recommends DNS request hosts to keep

 

the DNS entry in their caches before removing it. Enter 0 to have the ZyWALL not

 

recommend this so the DNS request hosts will follow their DNS server’s TTL setting.

 

 

Query From Setting

 

 

 

IP Address

Enter the IP address of a computer or a DNS server which makes the DNS queries

 

upon which to apply this rule.

 

DNS servers process client queries using recursion or iteration:

 

• In recursion, DNS servers make recursive queries on behalf of clients. So you

 

have to configure this field to the DNS server’s IP address when recursion is

 

used.

 

• In iteration, a client asks the DNS server and expects the best and immediate

 

answer without the DNS server contacting other DNS servers. If the primary DNS

 

server cannot provide the best answer, the client makes iteration queries to other

 

configured DNS servers to resolve the name. You have to configure this field to

 

the client’s IP address when iteration is used.

 

 

Zone

Select the zone of DNS query messages upon which to apply this rule.

 

 

Load Balancing

 

Member

 

 

 

250

 

ZyWALL 110/310/1100 Series User’s Guide