Appliance Trim Kit User Manual

Volume 9: Managing the Blue Coat SG Appliance
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health check type The kind of device or service the specific health check tests. The following types are
supported:
• Forwarding host and forwarding group
• SOCKS gateway and SOCKS gateway group
• CAP service and ICAP service group
• Websense off-box service and Websense off-box service group
• DRTR rating service
• User-defined host and a user-defined composite
heartbeat Messages sent once every 24 hours that contain the statistical and configuration data
for the SG appliance, indicating its health. Heartbeats are commonly sent to system
administrators and to Blue Coat. Heartbeats contain no private information, only
aggregate statistics useful for pre-emptively diagnosing support issues.
The SG appliance sends emergency heartbeats whenever it is rebooted. Emergency
heartbeats contain core dump and restart flags in addition to daily heartbeat
information.
host affinity The attempt to direct multiple connections by a single user to the same group
member. Host affinity is closely tied to load balancing behavior; both should be
configured if load balancing is important.
host affinity timeout The host affinity timeout determines how long a user remains idle before the
connection is closed. The timeout value checks the user's IP address, SSL ID, or
cookie in the host affinity table.
I
inbound traffic (bandwidth
gain)
Network packets flowing into the SG appliance. Inbound traffic mainly consists of
the following:
• Server inbound: Packets originating at the origin content server (OCS) and sent to
the SG
appliance to load a Web object.
• Client inbound: Packets originating at the client and sent to the SG appliance for
Web requests.
installable lists Installable lists, comprised of directives, can be placed onto the SG appliance in one
of the following ways:
• Creating the list using the SG text editor
• Placing the list at an accessible URL
• Downloading the directives file from the local system
integrated host timeout An integrated host is an origin content server (OCS) that has been added to the health
check list. The host, added through the integrate_new_hosts property, ages out
of the integrated host table after being idle for the specified time. The default is 60
minutes.
intervals Time period from the completion of one health check to the start of the next health
check.
IP reflection Determines how the client IP address is presented to the origin server for explicitly
proxied requests. All proxy services contain a reflect-ip attribute, which enables or
disables sending of client's IP address instead of the SG's IP address.