I'm used to doing everything manually when running wireless FreeBSD on older laptops. Running Ubuntu has shielded me from some of the command-line configuration I used to perform on FreeBSD. Linux uses different commands for certain tasks. My new laptop also has a different chipset from my old laptop, so I wanted to see if I could get Kismet working on it.
If I want to find wireless networks via the command line I use this command.
richard@neely:~$ sudo iwlist eth1 scan
eth1 Scan completed :
Cell 01 - Address: 00:13:10:65:2F:AD
ESSID:"shaolin"
Protocol:IEEE 802.11bg
Mode:Master
Channel:1
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
48 Mb/s; 54 Mb/s
Quality=76/100 Signal level=-58 dBm Noise level=-58 dBm
Extra: Last beacon: 68ms ago
...truncated...
If I want to associate with that WAP using WEP I use this command.
richard@neely:~$ sudo iwconfig eth1 essid shaolin channel 1 key KEYDIGITS
I am associated now.
richard@neely:~$ iwconfig eth1
eth1 IEEE 802.11g ESSID:"shaolin"
Mode:Managed Frequency:2.412 GHz Access Point: 00:13:10:65:2F:AD
Bit Rate:54 Mb/s Tx-Power:15 dBm
Retry limit:15 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=76/100 Signal level=-58 dBm Noise level=-59 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:2909 Missed beacon:0
I can grab an IP via DHCP.
richard@neely:~$ sudo dhclient eth1
Internet Systems Consortium DHCP Client V3.0.4
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/
Listening on LPF/eth1/00:13:02:4c:30:2d
Sending on LPF/eth1/00:13:02:4c:30:2d
Sending on Socket/fallback
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 8
DHCPOFFER from 192.168.2.1
DHCPREQUEST on eth1 to 255.255.255.255 port 67
DHCPACK from 192.168.2.1
bound to 192.168.2.103 -- renewal in 42728 seconds.
Here is ifconfig output.
richard@neely:~$ ifconfig eth1
eth1 Link encap:Ethernet HWaddr 00:13:02:4C:30:2D
inet addr:192.168.2.103 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::213:2ff:fe4c:302d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4984 errors:19 dropped:2928 overruns:0 frame:0
TX packets:239 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5491350 (5.2 MiB) TX bytes:188020 (183.6 KiB)
Interrupt:74 Base address:0xc000 Memory:edf00000-edf00fff
I can check my gateway.
richard@neely:~$ netstat -nr -4
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
172.16.250.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet8
172.16.207.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet1
0.0.0.0 192.168.2.1 0.0.0.0 UG 0 0 0 eth1
I can change my IP from DHCP to static.
richard@neely:~$ sudo killall dhclient
richard@neely:~$ sudo ifconfig eth1 inet 192.168.2.8 netmask 255.255.255.0 up
richard@neely:~$ ifconfig eth1
eth1 Link encap:Ethernet HWaddr 00:13:02:4C:30:2D
inet addr:192.168.2.8 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::213:2ff:fe4c:302d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5625 errors:20 dropped:2929 overruns:0 frame:0
TX packets:245 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5492954 (5.2 MiB) TX bytes:192494 (187.9 KiB)
Interrupt:74 Base address:0xc000 Memory:edf00000-edf00
ichard@neely:~$ sudo route add default gw 192.168.2.1
richard@neely:~$ netstat -nr -4
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
172.16.250.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet8
172.16.207.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet1
0.0.0.0 192.168.2.1 0.0.0.0 UG 0 0 0 eth1
Here are the changes I made to enable Kismet after checking my wireless card.
richard@neely:~$ sudo lshw -businfo | grep eth1
pci@03:00.0 eth1 network PRO/Wireless 3945ABG Network Connection
richard@neely:~$ diff -u /etc/kismet/kismet.conf.orig /etc/kismet/kismet.conf
--- /etc/kismet/kismet.conf.orig 2007-03-23 09:53:28.000000000 -0400
+++ /etc/kismet/kismet.conf 2007-03-23 09:56:00.000000000 -0400
@@ -7,10 +7,10 @@
version=2005.06.R1
# Name of server (Purely for organizational purposes)
-servername=Kismet
+servername=neely
# User to setid to (should be your normal user)
-#suiduser=your_user_here
+suiduser=richard
# Sources are defined as:
# source=sourcetype,interface,name[,initialchannel]
@@ -19,7 +19,7 @@
# The initial channel is optional, if hopping is not enabled it can be used
# to set the channel the interface listens on.
# YOU MUST CHANGE THIS TO BE THE SOURCE YOU WANT TO USE
-source=none,none,addme
+source=ipw3945,eth1,addme
Kismet works fine. When operating eth1 is in monitor mode.
richard@neely:~$ iwconfig eth1
eth1 unassociated ESSID:"shaolin"
Mode:Monitor Frequency=2.412 GHz Access Point: 00:13:10:65:2F:AD
Bit Rate:0 kb/s Tx-Power:16 dBm
Retry limit:15 RTS thr:off Fragment thr:off
Power Management:off
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
When Kismet exits I'm able to cleanly use my original connection.
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