Chapter 10 Firewalls
P-660HN-F1A User’s Guide
206
• WAN to WAN/ Router
By default the P-660HN-F1A stops computers on the WAN from managing the P-
660HN-F1A or using the P-660HN-F1A as a gateway to communicate with other
computers on the WAN. You could configure one of these rules to allow a WAN
computer to manage the P-660HN-F1A.
Note: You also need to configure the remote management settings to allow a WAN
computer to manage the P-660HN-F1A.
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 P-660HN-F1A’s default
rules.
10.5.2 Guidelines For Enhancing Security With Your Firewall
6
Change the default password via web configurator.
7
Think about access control before you connect to the network in any way.
8
Limit who can access your router.
9
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.
10
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.
11
Protect against IP spoofing by making sure the firewall is active.
12
Keep the firewall in a secured (locked) room.
Содержание P-660HN-F1A
Страница 2: ......
Страница 10: ...Contents Overview P 660HN F1A User s Guide 10...
Страница 20: ...Table of Contents P 660HN F1A User s Guide 20...
Страница 21: ...21 PART I User s Guide...
Страница 22: ...22...
Страница 36: ...Chapter 2 Introducing the Web Configurator P 660HN F1A User s Guide 36...
Страница 44: ...Chapter 3 Status Screens P 660HN F1A User s Guide 44...
Страница 77: ...Chapter 4 Tutorials P 660HN F1A User s Guide 77 2 Leave the other settings as their defaults and click Apply...
Страница 84: ...Chapter 4 Tutorials P 660HN F1A User s Guide 84 Physical Port 1 3 exclude port 4 3 Click Apply...
Страница 88: ...Chapter 4 Tutorials P 660HN F1A User s Guide 88...
Страница 103: ...103 PART II Technical Reference...
Страница 104: ...104...
Страница 142: ...Chapter 7 LAN Setup P 660HN F1A User s Guide 142...
Страница 188: ...Chapter 9 Network Address Translation NAT P 660HN F1A User s Guide 188...
Страница 210: ...Chapter 10 Firewalls P 660HN F1A User s Guide 210...
Страница 236: ...Chapter 13 Certificates P 660HN F1A User s Guide 236...
Страница 240: ...Chapter 14 Static Route P 660HN F1A User s Guide 240...
Страница 256: ...Chapter 16 Quality of Service QoS P 660HN F1A User s Guide 256 Figure 111 QoS Class Example Boss 2...
Страница 276: ...Chapter 17 Dynamic DNS Setup P 660HN F1A User s Guide 276...
Страница 288: ...Chapter 18 Remote Management P 660HN F1A User s Guide 288...
Страница 344: ...Chapter 24 Troubleshooting P 660HN F1A User s Guide 344...
Страница 376: ...Appendix A Setting up Your Computer s IP Address P 660HN F1A User s Guide 376...
Страница 386: ...Appendix B Pop up Windows JavaScripts and Java Permissions P 660HN F1A User s Guide 386...
Страница 396: ...Appendix C IP Addresses and Subnetting P 660HN F1A User s Guide 396...
Страница 420: ...Appendix F Legal Information P 660HN F1A User s Guide 420...
Страница 430: ...Index P 660HN F1A User s Guide 430...