HOWTO: Wireless Security - WPA1, WPA2, LEAP, etc.

**buccaneere** · November 28th, 2007

Supplicant installed.

Return of iwconfig : (no extensions except for this)

[ ath0 IEEE 802.11g ESSID:"cobweb" ]
[ Mode:Managed Frequency:2.417 GHz Access Point: Not-Associated ]
[ Bit Rate:0 kb/s Tx-Power:9 dBm Sensitivity=0/3 ]
[ Retry

ff RTS thr

ff Fragment thr

ff]
[ Power Management

ff]
[ Link Quality=0/94 Signal level=-95 dBm Noise level=-95 dBm]
[ Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0]
[ Tx excessive retries:0 Invalid misc:0 Missed beacon:0]

In order?

**wieman01** · November 28th, 2007

Originally Posted by buccaneere

Supplicant installed.

Return of iwconfig : (no extensions except for this)

[ ath0 IEEE 802.11g ESSID:"cobweb" ]
[ Mode:Managed Frequency:2.417 GHz Access Point: Not-Associated ]
[ Bit Rate:0 kb/s Tx-Power:9 dBm Sensitivity=0/3 ]
[ Retry

ff RTS thr

ff Fragment thr

ff]
[ Power Management

ff]
[ Link Quality=0/94 Signal level=-95 dBm Noise level=-95 dBm]
[ Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0]
[ Tx excessive retries:0 Invalid misc:0 Missed beacon:0]

In order?

Looks ok. What does this yield:

sudo ifdown ath0

sudo ifup ath0

sudo iwlist ath0

**buccaneere** · November 28th, 2007

Originally Posted by wieman01

Looks ok. What does this yield:

HTML Code:

chuckb@chuckb-laptop:~$ sudo ifdown ath0
Password:
There is already a pid file /var/run/dhclient.ath0.pid with pid 4516
killed old client process, removed PID file
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/

wifi0: unknown hardware address type 801
wifi0: unknown hardware address type 801
Listening on LPF/ath0/00:19:7d:29:74:13
Sending on   LPF/ath0/00:19:7d:29:74:13
Sending on   Socket/fallback

----------------------------------------------------------------------------------------
chuckb@chuckb-laptop:~$ sudo ifup ath0
Error for wireless request "Set Encode" (8B2A) :
    invalid argument "passcobwebcobwebphrase".
There is already a pid file /var/run/dhclient.ath0.pid with pid 134993416
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/

wifi0: unknown hardware address type 801
wifi0: unknown hardware address type 801
Listening on LPF/ath0/00:19:7d:29:74:13
Sending on   LPF/ath0/00:19:7d:29:74:13
Sending on   Socket/fallback
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 5
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 20
DHCPDISCOVER on ath0 to 255.255.255.255 port 67 interval 11
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
-------------------------------------------------------------------------------------------------------------------


chuckb@chuckb-laptop:~$ sudo iwlist ath0
iwlist: unknown command `ath0'

Ethernet hardwire is still on.
Roaming mode unknown.
Hidden broadcast disabled.

**wieman01** · November 28th, 2007

Ok, try this again:

sudo iwlist scan

Please also post the contents of:

sudo gedit /etc/network/interfaces

**buccaneere** · November 28th, 2007

HTML Code:

lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.

wifi0     Interface doesn't support scanning.

ath0      Scan completed :
          Cell 01 - Address: 00:18:39:DF:0E:BD
                    ESSID:"linksys"
                    Mode:Master
                    Frequency:2.437 GHz (Channel 6)
                    Quality=1/94  Signal level=-94 dBm  Noise level=-95 dBm
                    Encryption key:off
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 9 Mb/s
                              12 Mb/s; 48 Mb/s
                    Extra:bcn_int=100
          Cell 02 - Address: 00:14:95:A6:47:89
                    ESSID:"2WIRE493"
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Quality=17/94  Signal level=-78 dBm  Noise level=-95 dBm
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Extra:bcn_int=100
          Cell 03 - Address: 00:14:95:BA:79:91
                    ESSID:"2WIRE272"
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Quality=18/94  Signal level=-77 dBm  Noise level=-95 dBm
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Extra:bcn_int=100
          Cell 04 - Address: 00:19:5B:05:F0:12
                    ESSID:"cobweb"
                    Mode:Master
                    Frequency:2.412 GHz (Channel 1)
                    Quality=53/94  Signal level=-42 dBm  Noise level=-95 dBm
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              12 Mb/s; 24 Mb/s; 36 Mb/s; 9 Mb/s; 18 Mb/s
                              48 Mb/s; 54 Mb/s
                    Extra:bcn_int=100
                    IE: WPA Version 1
                        Group Cipher : TKIP 
                        Pairwise Ciphers (1) : TKIP 
                        Authentication Suites (1) : PSK  

sit0      Interface doesn't support scanning.

Network device: ath0
Hardware address: not available
IP address: not available
Netmask: not available
Broadcast: not available
Multicast: not available
MTU: not available
Link speed: not available
State: not available
Transmitted packets: 0
Transmission errors: 0
Received packets: 0
Reception errors: 0
Collisions: 0

Huh?

**buccaneere** · November 28th, 2007

HTML Code:

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp

auto eth1
iface eth1 inet dhcp

auto eth2
iface eth2 inet dhcp

auto wlan0
iface wlan0 inet dhcp


iface ath0 inet dhcp
wireless-essid cobweb
wireless-key p...e

auto ath0

I am cobweb

**wieman01** · November 28th, 2007

Hang on a minute... you have not configured it yet, have you? Everything looks set, so I think you can continue with the WPA section ("/etc/network/interfaces").

**buccaneere** · November 28th, 2007

Originally Posted by wieman01

Hang on a minute... you have not configured it yet, have you? Everything looks set, so I think you can continue with the WPA section ("/etc/network/interfaces").

I do not know if I have completely configured for wireless, or not. You have skipped me forward I think, through configuration steps...

I'm now at #3???

EDIT: I now see notes........................

auto wlan0
iface wlan0 inet static
address 192.168.168.40
gateway 192.168.168.230
dns-nameservers 192.168.168.230
netmask 255.255.255.0
wpa-driver wext
wpa-ssid <your_essid>
wpa-ap-scan 2
wpa-proto RSN
wpa-pairwise CCMP
wpa-group CCMP
wpa-key-mgmt WPA-PSK
wpa-psk <your_hex_key> [IMPORTANT: See "WPA-PSK key generation"]

**wieman01** · November 28th, 2007

Originally Posted by buccaneere

I do not know if I have completely configured for wireless, or not. You have skipped me forward I think, through configuration steps...

I'm now at #3???

auto wlan0............................................. ..........this will be ath0 ?
iface wlan0 inet static.........................................ifa ce ath0 inet dynamic?
address 192.168.168.40.................................... .address of router?
gateway 192.168.168.230..................................d efault gateway? from router?
dns-nameservers 192.168.168.230...................?
netmask 255.255.255.0..................................... .subnet mask?
wpa-driver wext
wpa-ssid <your_essid>
wpa-ap-scan 2
wpa-proto RSN
wpa-pairwise CCMP
wpa-group CCMP
wpa-key-mgmt WPA-PSK
wpa-psk <your_hex_key> [IMPORTANT: See "WPA-PSK key generation"]

Alright.

Watch out tough... The scan says that you use WPA-TKIP. That is WPA1 rather than WPA2. An example is provided as well.

**buccaneere** · November 28th, 2007

How do you exit after saving edited file?

This look good?

auto eth1
iface eth1 inet dhcp

auto eth2
iface eth2 inet dhcp

auto wlan0
iface wlan0 inet dhcp

iface ath0 inet dhcp
wireless-essid cobweb
wireless-key p...e

auto ath0
iface ath0 inet dhcp
00:19:5B:05:F0:12
192.168.0.1
192.168.0.1
255.255.255.0
wpa-driver wext
wpa-ssid cobweb
wpa-ap-scan 1
wpa-proto wpa
wpa-pairwise tkip
wpa-group tkip
wpa-key-mgmt wpa-psk
wpa-psk 2057043c4c9c2e031ac0ba3c960f4c5b3b8c8a5b319cbaab4a 93445f429f0727

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