ZyXEL Communications ZyWALL 2 Plus - Manual (Page 115)

Chapter 4 Tutorials
ZyWALL 2 Plus User’s Guide
115
Figure 69 Tutorial Example: NAT Address Mapping Done: Game Playing
"
To allow traffic from the WAN to be forwarded through the ZyXEL Device, you
must also create a firewall rule. Refer to
Section 4.2.5 on page 107 for more
information.
4.4 How to Manage the ZyWALL’s Bandwidth
This section shows you examples of how to allocate bandwidth and apply priorities to traffic
that flows out through the ZyWALL’s WAN port.
4.4.1 Example Parameters and Scenario
The following figure shows the network you want to set up in this example. The WAN port has
an upstream (outgoing) speed of 512 kbps. To prevent SIP-based VoIP (Voice over IP) traffic
from getting delayed due to heavy WWW or FTP traffic, you reserve 128 Kbps of bandwidth
for outgoing VoIP traffic (from LAN to WAN) and higher priority than FTP or WWW traffic.