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<H1>WPAHowto</H1>
<H3 id=siteSub>出自Ubuntu中文</H3>
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class=tocnumber>1</SPAN> <SPAN class=toctext>WPA setup</SPAN></A>
<LI class=toclevel-1><A
href="http://wiki.ubuntu.org.cn/index.php?title=WPAHowto&variant=zh-tw#Brief_WPA_Introduction"><SPAN
class=tocnumber>2</SPAN> <SPAN class=toctext>Brief WPA
Introduction</SPAN></A>
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<LI class=toclevel-2><A
href="http://wiki.ubuntu.org.cn/index.php?title=WPAHowto&variant=zh-tw#Assumptions"><SPAN
class=tocnumber>2.1</SPAN> <SPAN class=toctext>Assumptions</SPAN></A>
<LI class=toclevel-2><A
href="http://wiki.ubuntu.org.cn/index.php?title=WPAHowto&variant=zh-tw#The_procedure"><SPAN
class=tocnumber>2.2</SPAN> <SPAN class=toctext>The
procedure</SPAN></A>
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broadcast the SSID</SPAN></A> </LI></UL>
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class=tocnumber>3</SPAN> <SPAN class=toctext>Other Information - Can
someone check this and delete it if it is irrelevant?</SPAN></A>
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href="http://wiki.ubuntu.org.cn/index.php?title=WPAHowto&variant=zh-tw#Integration_with_DHCP"><SPAN
class=tocnumber>4</SPAN> <SPAN class=toctext>Integration with
DHCP</SPAN></A>
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href="http://wiki.ubuntu.org.cn/index.php?title=WPAHowto&variant=zh-tw#Links_and_Resources"><SPAN
class=tocnumber>5</SPAN> <SPAN class=toctext>Links and
Resources</SPAN></A> </LI></UL></TD></TR></TBODY></TABLE>
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<A name=WPA_setup></A>
<H2><SPAN class=editsection>[<A title="編輯段落: WPA setup"
href="http://wiki.ubuntu.org.cn/index.php?title=WPAHowto&action=edit&section=1">編輯</A>]</SPAN>
<SPAN class=mw-headline>WPA setup </SPAN></H2>
<P><!> This page is a combination of the original WPAHowto page, and the
WPA information on the Ndiswrapper page. </P><A name=Brief_WPA_Introduction></A>
<H2><SPAN class=editsection>[<A title="編輯段落: Brief WPA Introduction"
href="http://wiki.ubuntu.org.cn/index.php?title=WPAHowto&action=edit&section=2">編輯</A>]</SPAN>
<SPAN class=mw-headline>Brief WPA Introduction </SPAN></H2>
<P>Wi-Fi Protected Access (WPA) is a family of encryption methods used when
connecting to a wireless access point. It is based on the technology that is
used in Wired Equivalent Privacy (WEP) but provides stronger security. For more
information on the subject you can see the <A class="external text"
title=http://en.wikipedia.org/wiki/Wi-Fi_Protected_Access
href="http://en.wikipedia.org/wiki/Wi-Fi_Protected_Access" rel=nofollow>WPA</A>
entry on Wikipedia. </P>
<P><!> These instructions are targeted toward Ubuntu Dapper and newer.
They are untested with Breezy, but should also work. </P><A
name=Assumptions></A>
<H3><SPAN class=editsection>[<A title="編輯段落: Assumptions"
href="http://wiki.ubuntu.org.cn/index.php?title=WPAHowto&action=edit&section=3">編輯</A>]</SPAN>
<SPAN class=mw-headline>Assumptions </SPAN></H3>
<UL>
<LI>
<UL>
<LI>You can already access the network/internet -without- WPA or other
encryption.
<LI>You're using an ndiswrapper-based driver (probably not essential, but
you'll have to modify a few of the commands if you're using madwifi or one
of the native drivers - YMMV).
<LI>Your wireless card comes up with an interface name of 'wlan0' (if not,
you'll need to modify my examples to suit).
<LI>You want to use WPA-PSK with either TKIP or AES/CCMP.
<LI>Your router (or whatever) provides IP address details via DHCP (not
essential, but you'll have to modify one of the files beyond my examples).
<LI>Your router or WAP broadcasts its SSID (if not, <A class=new
title="Anthony see Anthony's (尚未撰寫)"
href="http://wiki.ubuntu.org.cn/index.php?title=Anthony_see_Anthony%27s&action=edit&redlink=1">anthony
see Anthony's</A> notes at the bottom of this page).
<UL>
<LI>
<UL>
<LI>You're comfortable editing files and working with badly-written
HOWTOs. :) </LI></UL></LI></UL></LI></UL></LI></UL>
<P><BR></P><A name=The_procedure></A>
<H3><SPAN class=editsection>[<A title="編輯段落: The procedure"
href="http://wiki.ubuntu.org.cn/index.php?title=WPAHowto&action=edit&section=4">編輯</A>]</SPAN>
<SPAN class=mw-headline>The procedure </SPAN></H3>
<P>First up, you'll need the wpasupplicant package. It's in the Universe
repository, so you'll need to have that in your sources.list file. If you've
already installed this package, I recommend that you reinstall; use these
commands to get rid of it: </P><PRE>sudo killall wpasupplicant
sudo dpkg --purge wpasupplicant
</PRE>
<P>Now install a fresh copy: </P><PRE>sudo apt-get install wpasupplicant
</PRE>
<P>{i} ~- The libopensc-openssl has been superseded by libengine-pkcs11-openssl.
BTW, what is this needed for? WPA-PSK with TKIP works fine without it. -
20060107 DaniloPiazzalunga -~ </P>
<P>{i} ~- You don't need libengine-pkcs11-openssl at all in standard
configurations. - 20060110 [<I>DanielTChen</I>] -~ </P>
<P><!> If you compiled and installed a newer version of ndiswrapper then
it's possible you will need to compile and install a newer version of
wpasupplicant. </P>
<P>After you've got it installed, start by modifying the "default" file -- to
enable wpa_supplicant and provide its command line options. For our example
setup, this would be: </P><PRE>sudo nano /etc/default/wpasupplicant
</PRE>
<P>attachment:IconsPage/IconExample48.png Here's what mine looks like; modify
yours to taste: </P><PRE># /etc/default/wpasupplicant
# WARNING! Make sure you have a configuration file!
ENABLED=1
OPTIONS="-iwlan0 -c/etc/wpa_supplicant.conf -Dndiswrapper -w"
# Useful flags:
# -D <driver> Wireless Driver
# -i <ifname> Interface (required, unless specified in config)
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