Apple designing airport networks 用户手册
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Chapter 4
AirPort Network Designs
Important:
If your base station is using Power over Ethernet and is mounted in an
air-handling space, do not connect an external antenna unless it complies with UL
Standard 2043. Some external antennas do not meet the requirements for placement
in air-handling spaces.
Standard 2043. Some external antennas do not meet the requirements for placement
in air-handling spaces.
Controlling the Range of Your AirPort Network
You can also shorten the range of your AirPort network. This might be useful if you
want to control who has access to the network by restricting the range to a single
room, for example.
want to control who has access to the network by restricting the range to a single
room, for example.
To shorten the range of your AirPort network:
1
Open AirPort Admin Utility (in Applications/Utilities).
2
Select your base station and click Configure.
3
Click AirPort and then click Wireless Options.
4
Choose a milliwatt setting from the Transmitter Power pop-up menu. The lower the
milliwatt setting, the shorter the range.
milliwatt setting, the shorter the range.
Keeping Your Network Secure
Your network is protected by the password you assign to it. However, you can take
additional steps to help keep your network secure.
additional steps to help keep your network secure.
Networks managed by Simple Network Management Protocol (SNMP) may be
vulnerable to denial-of-service attacks. Similarly, if you configure your base station over
the WAN port, it may be possible for unauthorized users to change network settings.
When remote configuration is enabled, the base station’s Rendezvous information (the
base station name and IP address) is published over the WAN port. Turning off remote
configuration may provide additional security.
vulnerable to denial-of-service attacks. Similarly, if you configure your base station over
the WAN port, it may be possible for unauthorized users to change network settings.
When remote configuration is enabled, the base station’s Rendezvous information (the
base station name and IP address) is published over the WAN port. Turning off remote
configuration may provide additional security.
To help protect your network and base station:
1
Open AirPort Admin Utility, select your base station, and click Configure.
2
Click Base Station Options in the AirPort pane.
3
Make sure the Enable SNMP Access and Enable Remote Configuration checkboxes are
not selected.
not selected.
Using Wi-Fi Protected Access (WPA)
This version of AirPort supports WPA, the latest security standard for wireless networks.
Using Mac OS X 10.3 and its 802.1X authentication capabilities, WPA security delivers
more sophisticated data encryption than WEP, and also provides user authentication,
which was virtually unavailable with WEP.
Using Mac OS X 10.3 and its 802.1X authentication capabilities, WPA security delivers
more sophisticated data encryption than WEP, and also provides user authentication,
which was virtually unavailable with WEP.
Note: WPA security features are available only to AirPort Extreme Base Stations; AirPort
Express; AirPort and AirPort Extreme clients using Mac OS X 10.3 or later and AirPort 3.2
or later, and non-Apple clients using other 802.11 wireless adapters that support WPA.
Express; AirPort and AirPort Extreme clients using Mac OS X 10.3 or later and AirPort 3.2
or later, and non-Apple clients using other 802.11 wireless adapters that support WPA.
LL0214.book Page 56 Monday, October 25, 2004 4:06 PM