User manual
The WebMux Pro and Model WM108E User Guide – Version 5. 8 Rev15
Copyright© 1997-2004 CAI Networks, Inc.
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• The registered Internet IP address range is a class C address range. The
IP address of the WebMuxes’ Virtual Farms must be in the same network
range as the Internet router.
• The WebMux translates the Internet addresses to an internal non-routable
class A address. In this example, the subnet-mask 255.0.0.0. The IP
address of the WebMux interfaces attached to the Server LAN are
10.1.1.10 and 10.1.1.20.
• The Default Gateway for all the servers is 10.1.1.1.
• Farm 1 IP address is 205.133.156.200.
• Servers 1 and 2 serve Farm 1.
• Farm 2 IP address is 205.133.156.210.
• Servers 2 and 3 serve Farm 2.
• Change to the servers: made default gateway to 10.1.1.1, as well as the
IP addresses to the 10.3.1.10/20/30 addresses. If on the server there is a
service attached to the IP address (HTTP/S, FTP, etc), please make sure
the service will run on the new IP address.
NOTE: Although WebMux working with any IP address range, all server IP addresses should
be Internet non-routable address so that the source address from the Internet does not
conflict with the IP addresses on the Server LAN.
Note: If there is a firewall between the WebMux and the Internet Router, a rule must be
defined in the firewall to allow the IP address of the WebMux interfaces on the Router LAN in
addition to the farm IP address (could be same as the WebMux Router LAN IP address) to
communicate out to the Internet on all ports. Since WebMux doing Network Address
Translation of the farm address to a non-routable address, the farm addresses on the
WebMux interface must communicate outbound on all ports defined in the farms.










