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18
C
HAPTER
1: I
NTRODUCTION
on the LAN are protected from hacker attacks that
might come through the WAN port.
■
On the OfficeConnect Internet Firewall DMZ, there is a
third port. The
Demilitarized Zone
(DMZ) port is used for
public servers, such as Web or FTP servers. Machines
attached to this port are visible from the WAN port, but
are still protected from hacker attacks. Users on the
secure LAN port can also access servers on the DMZ
port.
Internet Firewall Security Functions
Figure 1
and
Figure 2
illustrate security functions on the
Internet Firewall.
Users on the LAN have access to all resources on the
Internet that are not blocked by any of the filters. In
Figure 2
, computers on the LAN also have full access to
devices on the DMZ.
Users on the Internet can access hosts on the DMZ, such as
a Web server, but cannot access any resources on the LAN
unless they are authorized remote users.
Содержание 3C16772 - OfficeConnect Web Site Filter
Страница 8: ......
Страница 16: ...16 ABOUT THIS GUIDE ...
Страница 34: ...34 CHAPTER 2 INSTALLING THE HARDWARE ...
Страница 126: ...126 CHAPTER 5 THE OFFICECONNECT WEB SITE FILTER ACTIVATION ...
Страница 132: ...132 APPENDIX A CABLE SPECIFICATIONS AND PINOUT DIAGRAM Figure 52 Twisted Pair Pinouts ...
Страница 158: ...158 APPENDIX E EXAMPLE CONFIGURATIONS ...
Страница 172: ......
Страница 178: ...178 INDEX ...