Fortinet 254 FortiWeb 5.0 Patch 6 Administration Guide
4. In Domain, type the domain name of the domain server, such as example.com.
5. Click OK.
6. To use the domain server, either select it within a server policy, or group it into a server farm
that is selected in a server policy. For details, see “Configuring a server policy” on page 483
or “Grouping your web servers into server farms” on page 256.
See also
•Enabling or disabling traffic forwarding to your servers
•Grouping your web servers into server farms
•Configuring a server policy
Configuring server up/down checks
Tests for server availability (called “server health checks” in the web UI) poll web servers that are
members of a server farm to determine their responsiveness before forwarding traffic. Server
health checks can use TCP, HTTP/HTTPS, or ICMP ECHO_REQUEST (ping).
The FortiWeb appliance will poll the server at the frequency set in the Interval option. If the
appliance does not receive a reply within the timeout period, and you have configured the health
check to retry, it attempts a health check again; otherwise, the server is deemed unresponsive.
The FortiWeb appliance reacts to unresponsive servers by disabling traffic to that server until it
becomes responsive.
To view the status currently detected by server health checks, use the Service Status widget on
the dashboard. For details, see “Server Status widget” on page 538.
To configure a server health check
1. Before configuring a server health check, if it will use a trigger, you must first configure the
trigger. For details, see “Configuring triggers” on page 557.
If a policy has any domain servers whose DNS names resolve to IPv6 addresses, it will not
apply features that do not yet support IPv6, even if they are selected.
Server health checks cannot be used with an individual web server. If you want to monitor a
server for responsiveness, you must group one or more web servers into a server farm.
If a web server will be unavailable for a long period, such as when a server is undergoing
hardware repair, it is experiencing extended down time, or when you have removed a server
from the server farm, you may improve the performance of your FortiWeb appliance by
disabling connectivity to the web server, rather than allowing the server health check to
continue to check for responsiveness. For details, see “Enabling or disabling traffic forwarding
to your servers” on page 275.