Chapter 14 Firewall
AMG1312-T10D User’s Guide
152
• WAN to Router
By default the Device stops computers on the WAN from managing the Device. You could
configure one of these rules to allow a WAN computer to manage the Device.
Note: You also need to configure the remote management settings to allow a WAN
computer to manage the Device.
You may define additional rules and sets or modify existing ones but please exercise extreme
caution in doing so.
For example, you may create rules to:
• Block certain types of traffic, such as IRC (Internet Relay Chat), from the LAN to the Internet.
• Allow certain types of traffic, such as Lotus Notes database synchronization, from specific hosts
on the Internet to specific hosts on the LAN.
• Allow everyone except your competitors to access a web server.
• Restrict use of certain protocols, such as Telnet, to authorized users on the LAN.
These custom rules work by comparing the source IP address, destination IP address and IP
protocol type of network traffic to rules set by the administrator. Your customized rules take
precedence and override the Device’s default rules.
14.6.2 Guidelines For Enhancing Security With Your Firewall
1
Change the default password via web configurator.
2
Think about access control before you connect to the network in any way.
3
Limit who can access your router.
4
Don't enable any local service (such as telnet or FTP) that you don't use. Any enabled service could
present a potential security risk. A determined hacker might be able to find creative ways to misuse
the enabled services to access the firewall or the network.
5
For local services that are enabled, protect against misuse. Protect by configuring the services to
communicate only with specific peers, and protect by configuring rules to block packets for the
services at specific interfaces.
6
Protect against IP spoofing by making sure the firewall is active.
7
Keep the firewall in a secured (locked) room.
14.6.3 Security Considerations
Note: Incorrectly configuring the firewall may block valid access or introduce security
risks to the Device and your protected network. Use caution when creating or
deleting firewall rules and test your rules after you configure them.
Consider these security ramifications before creating a rule:
Summary of Contents for AMG1312-T10D
Page 4: ...Contents Overview AMG1312 T10D User s Guide 4 ...
Page 12: ...Table of Contents AMG1312 T10D User s Guide 12 ...
Page 18: ...Chapter 1 Introduction AMG1312 T10D User s Guide 18 ...
Page 24: ...Chapter 2 Introducing the Web Configurator AMG1312 T10D User s Guide 24 ...
Page 74: ...Chapter 6 Wireless AMG1312 T10D User s Guide 74 ...
Page 100: ...Chapter 7 Home Networking AMG1312 T10D User s Guide 100 ...
Page 138: ...Chapter 13 Filter AMG1312 T10D User s Guide 138 ...
Page 158: ...Chapter 15 Parental Control AMG1312 T10D User s Guide 158 ...
Page 166: ...Chapter 16 Certificates AMG1312 T10D User s Guide 166 ...
Page 172: ...Chapter 17 System Monitor AMG1312 T10D User s Guide 172 ...
Page 174: ...Chapter 18 User Account AMG1312 T10D User s Guide 174 ...
Page 178: ...Chapter 20 System AMG1312 T10D User s Guide 178 ...
Page 184: ...Chapter 22 Log Setting AMG1312 T10D User s Guide 184 ...
Page 190: ...Chapter 24 Backup Restore AMG1312 T10D User s Guide 190 ...
Page 202: ...Chapter 25 Remote Management AMG1312 T10D User s Guide 202 ...
Page 206: ...Chapter 26 Diagnostic AMG1312 T10D User s Guide 206 ...
Page 218: ...Appendix A Legal Information AMG1312 T10D User s Guide 218 Environmental Product Declaration ...