ZyXEL Communications 200 Series User Manual

Chapter 27 Application Patrol

ZyWALL USG 100/200 Series User’s Guide

Figure 358   SIP Any to WAN Bandwidth Management Example

You also create a policy for calls coming in from the SIP server on the WAN. It is the same as 
the SIP Any to WAN policy, but with the directions reversed (WAN to Any instead of Any to 
WAN).

• Inbound traffic gets more bandwidth as the local users will probably download more than 

they upload (and the ADSL connection supports this). 

• Second highest priority (2). Set policies for other applications (except SIP) to lower 

priorities so the local users’ HTTP traffic gets sent before non-SIP traffic.

• Enable maximize bandwidth usage so the HTTP traffic can borrow unused bandwidth.

Figure 359   HTTP Any to WAN Bandwidth Management Example

• ADSL supports more downstream than upstream so you allow remote users 300 kbps for 

uploads to the DMZ FTP server (outbound) but only 100 kbps for downloads (inbound).

• Third highest priority (3).

• Disable maximize bandwidth usage since you do not want to give FTP more bandwidth.