ZyXEL Communications Wireless Gateway Series 사용자 설명서

ZyAIR Wireless Gateway Series User’s Guide 

Firewall Screens 

 

12-1 

The web configurator is, by far, the most comprehensive firewall configuration tool your ZyAIR has to offer. 
For this reason, it is recommended that you configure your firewall using the web configurator. SMT screens 
allow you to activate the firewall. 

Firewall rules are grouped based on the direction of travel of packets to which they apply: 

•  LAN to LAN/ZyAIR 

•  WAN to LAN 

 

•  LAN to WAN 

•  WAN to WAN/ZyAIR 

 

By default, the ZyAIR’s stateful packet inspection allows packets traveling in the following directions: 

•  LAN to LAN/ZyAIR  

This allows computers on the LAN to manage the ZyAIR and communicate between networks or 
subnets connected to the LAN interface. 

•  LAN to WAN 

By default, the ZyAIR’s stateful packet inspection blocks packets traveling in the following directions: 

•  WAN to LAN 
•  WAN to WAN/ZyAIR  

This prevents computers on the WAN from using the ZyAIR as a gateway to communicate with 
other computers on the WAN and/or managing the ZyAIR. 

You may define additional rules and sets or modify existing ones but please exercise extreme caution in 
doing so.