3Com SuperStack 3 WEBCACHE 1000, User Manual

Page: 37 / 362

Transparent Cache Deployment 37
Advantages
■
You do not have to configure the Web browser on each client
machine that you want to access the Webcache. Deployment of the
Webcache within your network is therefore easier to achieve and
manage because you only need to configure the Layer 4 Redirection
device and the Webcache itself.
■
If the Webcache fails and the Layer 4 device or router supports
Webcache health-checks, the device will detect the failure and redirect
Web requests to the WAN, ensuring that access to the Web is
maintained.
■
Deploying the Webcache in Transparent mode has benefits for the
security of your network. It ensures that only client machines that are
inside your network can access the systems and resources within it,
and prevents client machines or malicious users from bypassing the
Webcache. This reduces the need for more complex access controls.
Disadvantages
■
You may have to add a new redirecting device to your network if it is
not already available.
■
The redirecting device needs to be located at a point in your network
where Web traffic converges, such as a core switch, an edge switch
close to the LAN, or an edge Cisco router.
Transparent Cache Solutions
You can deploy the Webcache using the following Transparent Cache
solutions:
■
Deploying the SuperStack 3 Switch 4400, 4924 or 4950 with the
Webcache
■
Deploying the SuperStack 3 Server Load Balancer with the Webcache
■
Web Cache Communication Protocol (WCCP)
dua1611-5aaa04.book Page 37 Friday, November 29, 2002 8:56 PM