3com Webcache 1000 (3C16115) User Manual
Deploying the Webcache in Your Network
33
Deploying the
Webcache in Your
Network
Webcache in Your
Network
You must determine how you are going to deploy the Webcache in your
network. The Webcache can be deployed in two ways:
network. The Webcache can be deployed in two ways:
■
Proxy Cache mode — The Webcache is connected to a Layer 2 switch
in your LAN. You must configure the Web browser on each client
machine in your network to direct its Web requests to the Webcache.
in your LAN. You must configure the Web browser on each client
machine in your network to direct its Web requests to the Webcache.
■
Transparent Cache mode — The Webcache is connected to a Layer 4
redirection device — a switch, router or firewall in your LAN which is
capable of Redirection. No configuration of the Web browser on each
client machine is needed because the Layer 4 device automatically
redirects Web requests to the Webcache.
redirection device — a switch, router or firewall in your LAN which is
capable of Redirection. No configuration of the Web browser on each
client machine is needed because the Layer 4 device automatically
redirects Web requests to the Webcache.
CAUTION: 3Com recommends that you deploy your Webcache on the
LAN side of a firewall, or on the SuperStack 3 Firewall's DMZ port as
described in “Deploying the SuperStack 3 Firewall as a Proxy Forwarder”
on page 35.
LAN side of a firewall, or on the SuperStack 3 Firewall's DMZ port as
described in “Deploying the SuperStack 3 Firewall as a Proxy Forwarder”
on page 35.
The term “Web requests” refers to three types of network traffic; HTTP,
HTTPS (SSL encrypted) and HTTP-FTP. The Webcache can accept all of
these traffic types. In Proxy Cache mode, you should configure the Web
browser on each client machine to use the Webcache as the server for
each of these protocols.
HTTPS (SSL encrypted) and HTTP-FTP. The Webcache can accept all of
these traffic types. In Proxy Cache mode, you should configure the Web
browser on each client machine to use the Webcache as the server for
each of these protocols.
HTTPS (SSL encrypted) traffic is only passed through by the Webcache; it
is not decoded or cached.
is not decoded or cached.
Proxy Cache
Figure 9 Proxy Cache Deployment
Server
Server
Client Machine
Client Machine
Client Machine
WAN
LAN
WAN Gateway
Webcache
SuperStack 3
®
3C16116
Webcache 3000
Power/Self test
Activity
Cache Storage Status
green = ok
yellow = failed
green = 100 Mbps
yellow = 10 Mbps
Link Status
3
1
2
Cache Storage Status
3
2
Link Status
Activity
LAN
LAN
LAN
WAN