Appendix A: Glossary

R

 

real-time streaming protocol

A standard method of transferring audio and video and other time-based media over

(RTSP)

Internet-technology based networks. The protocol is used to stream clips to any RTP-

 

based client.

reflect client IP attribute

Enables the sending of the client's IP address instead of the SG's IP address to the

 

upstream server. If you are using an application delivery network (ADN), this setting

 

is enforced on the concentrator proxy through the Configuration > App. Delivery

 

Network > Tunneling tab.

registration

An event that binds the appliance to an account, that is, it creates the Serial#, Account

 

association.

remote authentication dial-

Authenticates user identity via passwords for network access.

in user service (RADIUS)

 

reverse proxy

A proxy that acts as a front-end to a small number of pre-defined servers, typically to

 

improve performance. Many clients can use it to access the small number of

 

predefined servers.

routing information protocol

Designed to select the fastest route to a destination. RIP support is built into Blue

(RIP)

Coat appliances.

router hops

The number of jumps a packet takes when traversing the Internet.

S

 

secure shell (SSH)

Also known as Secure Socket Shell. SSH is an interface and protocol that provides

 

strong authentication and enables you to securely access a remote computer. Three

 

utilities—login, ssh, and scp—comprise SSH. Security via SSH is accomplished using

 

a digital certificate and password encryption. Remember that the Blue Coat SG

 

appliance requires SSH1. An SG appliance supports a combined maximum of 16

 

Telnet and SSH sessions.

serial console

A third-party device that can be connected to one or more Blue Coat appliances.

 

Once connected, you can access and configure the appliance through the serial

 

console, even when you cannot access the appliance directly.

server certificate categories

The hostname in a server certificate can be categorized by BCWF or another content

 

filtering vendor to fit into categories such as banking, finance, sports.

server portals

Doorways that provide controlled access to a Web server or a collection of Web

 

servers. You can configure Blue Coat SG appliances to be server portals by mapping a

 

set of external URLs onto a set of internal URLs.

server-side transparency

The ability for the server to see client IP addresses, which enables accurate client-

 

access records to be kept. When server-side transparency is enabled, the appliance

 

retains client IP addresses for all port 80 traffic to and from the SG appliance. In this

 

scheme, the client IP address is always revealed to the server.

service attributes

Define the parameters, such as explicit or transparent, cipher suite, and certificate

 

verification, that the SG appliance uses for a particular service. .

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Blue Coat Systems Blue Coat Systems SG Appliance, SGOS Version 5.2.2 manual Network Tunneling tab