Configuring Hosts - Novell ACCESS MANAGER 3.1 SP1 - GATEWAY GUIDE Manual

Negative Lookup: Specifies how long a failed DNS lookup domain name remains in cache. If
the Access Gateway cannot resolve a domain name, it stores that information in its cache for
the specified amount of time. If the Access Gateway receives requests for that domain name
within this period, it sends a "Bad Gateway" error message to the browser and does not resolve
the domain name again. Valid field values include 0–3600 seconds. The default is120 seconds.
Minimum Time To Live per Entry: Specifies the minimum amount of time that DNS entries
remain in cache before they expire. This is the minimum value the Access Gateway uses
regardless of the value the DNS server returns. Valid field values include 0–3600 seconds. The
default is 120 seconds.
Maximum Time To Live per Entry: Specifies the maximum amount of time that DNS entries
remain in cache before they expire. This is the maximum value the Access Gateway uses
regardless of the value the DNS server returns. Valid field values include 0–744 hours. The
default is 168 hours.
Maximum Entries: Specifies the maximum number of DNS cache entries. When this number
is reached, the Access Gateway deletes old entries to make room for newer ones. Valid field
values include 2000–100000. The default is 5000.
DNS Transport Protocol: Specifies the transport protocol that DNS uses on the network
where the Access Gateway is installed. Valid values are UDP and TCP. The default is UDP.
5 To save your changes to browser cache, click OK.
6 On the Server Configuration page, click OK, then click Update > OK.

3.8.4 Configuring Hosts

You can configure the Access Gateway to have multiple hostnames or to resolve DNS names to IP
addresses. If you manually edit the
Gateway Appliance is updated. However, if you use the Hosts page to specify the entries, the entries
are written to the
updated.
1 In the Administration Console, click Devices > Access Gateways > Edit > Hosts.
This page displays a list of host IP addresses.
2 (Conditional) If the Access Gateway is a member of a cluster, select the server you want to
configure from the list of servers in the Cluster Member field. All changes made to this page
apply to the selected server.
3 To add a new hostname to an existing IP address, click the name of a Host IP Address.
96 Novell Access Manager 3.1 SP1 Access Gateway Guide
/etc/hosts
file whenever the configuration of the Access Gateway Appliance is
/etc/hosts
file, your modifications are lost when the Access