From 2168ea8b1650198e0b91215adc5ad52c42651440 Mon Sep 17 00:00:00 2001 From: Robby Workman Date: Mon, 11 Jan 2010 23:22:22 -0600 Subject: Initial commit of the slackbook sources from Alan's master copy. --- chapter_14.xml | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 chapter_14.xml (limited to 'chapter_14.xml') diff --git a/chapter_14.xml b/chapter_14.xml new file mode 100644 index 0000000..9bbe28a --- /dev/null +++ b/chapter_14.xml @@ -0,0 +1,98 @@ + + + + +Wireless Networking + +
+<application>iwconfig</application> + + +Wireless networking is somewhat more complicated than traditional wired +networking, and requires additional tools for setup. Slackware includes +a diverse collection of wireless networking tools to allow you to +configure your wireless network interface card (WNIC) at the most basic +level. We won't cover everything here, but should give you a solid +foundation to get up and running quickly. The first tool we are going +to look at is iwconfig(8). When run without +any argument, iwconfig displays the current +wireless information on any and all NICs on your computer. + + + +darkstar:~# iwconfig +lo no wireless extensions. + +eth0 no wireless extensions. + +wmaster0 no wireless extensions. + +wlan0 IEEE 802.11abgn ESSID:"nest" + Mode:Managed Frequency:2.432 GHz Access Point: +00:13:10:EA:4E:BD + Bit Rate=54 Mb/s Tx-Power=17 dBm + Retry min limit:7 RTS thr:off Fragment thr=2352 B + Encryption key:off + Power Management:off + Link Quality=100/100 Signal level:-42 dBm + Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 + Tx excessive retries:0 Invalid misc:0 Missed beacon:0 + +tun0 no wireless extensions. + + + +Unlike wired networks, wireless networks are "fuzzy". Their borders are +hard to define, and multiple networks may overlap one another. In order +to avoid confusion, each wireless network has (hopefully) unique +identifiers. The two most basic identifiers are the Extended Service +Set Identifier (ESSID) and the channel or frequency for radio +transmission. The ESSID is simply a name that identifies the wireless +network in question; you may have heard it referred to as the network +name or something similar. Typical wireless networks operate on 11 +different frequencies. In order to connect to even the most basic +wireless network, you will have to setup these two pieces of +information, and possibly others, before setting up things like the +WNIC's IP address. Here you can see that my ESSID is set to "nest" and +my laptop is transmitting at 2.432 GHz. This is all that is required to +connect to an unencrypted wireless LAN. (For any of you out there +expecting to come to my house and use my unencrypted wireless, you +should know that you'll have to break a 2048-bit SSL key before the +access point will let you communicate with my LAN.) + + +
+ +
+Wired Equivilant Protection (or Lack Thereof) + + +Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do +eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad +minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip +ex ea commodo consequat. Duis aute irure dolor in reprehenderit in +voluptate velit esse cillum dolore eu fugiat nulla pariatur. + + +
+ +
+WPA + + +Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do +eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad +minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip +ex ea commodo consequat. Duis aute irure dolor in reprehenderit in +voluptate velit esse cillum dolore eu fugiat nulla pariatur. + + +
+ +
+rc.inet1.conf revisited + +
+ + -- cgit v1.2.3