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Chapter 12 Firewall
P-2612HW Series User’s Guide
245
12.5 Firewall Technical Reference
This section provides some technical background information about the topics
covered in this chapter.
12.5.1 Firewall Rules Overview
Your customized rules take precedence and override the ZyXEL Device’s default
settings. The ZyXEL Device checks the source IP address, destination IP address
and IP protocol type of network traffic against the firewall rules (in the order you
list them). When the traffic matches a rule, the ZyXEL Device takes the action
specified in the rule.
Firewall rules are grouped based on the direction of travel of packets to which they
apply:
Note: The LAN includes both the LAN port and the WLAN.
By default, the ZyXEL Device’s stateful packet inspection allows packets traveling
in the following directions:
• LAN to LAN/ Router
These rules specify which computers on the LAN can manage the ZyXEL Device
(remote management) and communicate between networks or subnets
connected to the LAN interface (IP alias).
Note: You can also configure the remote management settings to allow only a specific
computer to manage the ZyXEL Device.
• LAN to WAN
These rules specify which computers on the LAN can access which computers or
services on the WAN.
By default, the ZyXEL Device’s stateful packet inspection drops packets traveling
in the following directions:
• WAN to LAN
These rules specify which computers on the WAN can access which computers
or services on the LAN.
Note: You also need to configure NAT port forwarding (or full featured NAT address
mapping rules) to allow computers on the WAN to access devices on the LAN.
• LAN to LAN/ Router
• WAN to LAN
• LAN to WAN
• WAN to WAN/ Router
Summary of Contents for P-2612HW-F1 -
Page 2: ......
Page 8: ...Safety Warnings P 2612HW Series User s Guide 8...
Page 10: ...Contents Overview P 2612HW Series User s Guide 10...
Page 22: ...Table of Contents P 2612HW Series User s Guide 22...
Page 24: ...24...
Page 56: ...Chapter 3 Wizards P 2612HW Series User s Guide 56...
Page 88: ...88...
Page 120: ...Chapter 6 WAN Setup P 2612HW Series User s Guide 120...
Page 136: ...Chapter 7 LAN Setup P 2612HW Series User s Guide 136...
Page 168: ...Chapter 8 Wireless LAN P 2612HW Series User s Guide 168...
Page 184: ...Chapter 9 Network Address Translation NAT P 2612HW Series User s Guide 184...
Page 250: ...Chapter 12 Firewall P 2612HW Series User s Guide 250...
Page 290: ...Chapter 14 VPN P 2612HW Series User s Guide 290...
Page 320: ...Chapter 15 Certificates P 2612HW Series User s Guide 320...
Page 324: ...Chapter 16 Static Route P 2612HW Series User s Guide 324...
Page 356: ...Chapter 19 Dynamic DNS Setup P 2612HW Series User s Guide 356...
Page 382: ...Chapter 21 Universal Plug and Play UPnP P 2612HW Series User s Guide 382...
Page 384: ...384...
Page 406: ...Chapter 23 Logs P 2612HW Series User s Guide 406...
Page 458: ...458...
Page 494: ...Appendix B Pop up Windows JavaScripts and Java Permissions P 2612HW Series User s Guide 494...
Page 530: ...Appendix D Wireless LANs P 2612HW Series User s Guide 530...