HowTo: WPA with wpa_supplicant

[aresgoddess]

i figured out the answers to the questions i had above. though i still don't know what "dhclient3" is... anyways, i've almost got my computer connected to the wireless, but it still has the disconnection symbol on the icon. everything is fine until I run

sudo dhclient

and then the response is

No DHCPOFFERS received.
No working leases in the persistent database - sleeping.

there's more to the response, but it's too long to type out, and i can't copy and paste, as i am using a different computer than the one that's having problems. =(

It's been doing that every single time. So far, i've changed from automatic DHCP to a static IP, i've changed codes in the wpa_supplicant.conf AND the /etc/network/interfaces, and nothing seems to make a difference. It keeps getting stuck at that point.

this is what i have in my /etc/wpa_supplicant.conf

ctrl_interface=/var/run/wpa_supplicant
#ap_scan=2

network={
    ssid="networkname"
    scan_ssid=0
    key_mgmt=WPA-PSK
    proto=WPA
#  pairwise=CCMP TKIP
#  group=CCMP TKIP
    psk=very long number/letter sequence
}

is it possible to have settings for two different wireless networks? if so, how do i do that? I assume that it would deal with the other dealies in the interfaces file, like eth0, eth1, eth2, wlan0, and lo, but what do all those mean?

[1975]

Hello

I'm trying to configure WPA using my ipw2200

My /etc/wpa_supplicant.conf:

ctrl_interface=/var/run/wpa_supplicant
#ap_scan=2

network={
       ssid="senso-unico.nl"
       scan_ssid=1
       proto=WPA RSN
       key_mgmt=WPA-PSK
       pairwise=CCMP TKIP
       group=CCMP TKIP
       psk=<<<CUT>>>
}

My /etc/network/interfaces:

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp

auto eth1
iface eth1 inet dhcp
pre-up wpa_supplicant -Bw -Dwext -ieth1 -c/etc/wpa_supplicant.conf
post-down killall -q wpa_supplicant

auto eth2
iface eth2 inet dhcp

auto ath0
iface ath0 inet dhcp

auto wlan0
iface wlan0 inet dhcp

Now when I run

$ sudo wpa_supplicant -w -Dwext -i eth1 -c/etc/wpa_supplicant.conf -dd

I get:

Initializing interface 'eth1' conf '/etc/wpa_supplicant.conf' driver 'wext' ctrl_interface 'N/A'
Configuration file '/etc/wpa_supplicant.conf' -> '/etc/wpa_supplicant.conf'
Reading configuration file '/etc/wpa_supplicant.conf'
ctrl_interface='/var/run/wpa_supplicant'
Line: 4 - start of a new network block
ssid - hexdump_ascii(len=14):
     73 65 6e 73 6f 2d 75 6e 69 63 6f 2e 6e 6c         senso-unico.nl
scan_ssid=1 (0x1)
proto: 0x3
key_mgmt: 0x2
pairwise: 0x18
group: 0x18
PSK - hexdump(len=32): [REMOVED]
Priority group 0
   id=0 ssid='senso-unico.nl'
Initializing interface (2) 'eth1'
EAPOL: SUPP_PAE entering state DISCONNECTED
EAPOL: KEY_RX entering state NO_KEY_RECEIVE
EAPOL: SUPP_BE entering state INITIALIZE
EAP: EAP entering state DISABLED
EAPOL: External notification - portEnabled=0
EAPOL: External notification - portValid=0
SIOCGIWRANGE: WE(compiled)=19 WE(source)=18 enc_capa=0xf
  capabilities: key_mgmt 0xf enc 0xf
Own MAC address: 00:13:ce:d9:72:f3
wpa_driver_wext_set_wpa
wpa_driver_wext_set_key: alg=0 key_idx=0 set_tx=0 seq_len=0 key_len=0
wpa_driver_wext_set_key: alg=0 key_idx=1 set_tx=0 seq_len=0 key_len=0
wpa_driver_wext_set_key: alg=0 key_idx=2 set_tx=0 seq_len=0 key_len=0
wpa_driver_wext_set_key: alg=0 key_idx=3 set_tx=0 seq_len=0 key_len=0
wpa_driver_wext_set_countermeasures
wpa_driver_wext_set_drop_unencrypted
Setting scan request: 0 sec 100000 usec
Using existing control interface directory.
bind(PF_UNIX): Address already in use
ctrl_iface exists and seems to be in use - cannot override it
Delete '/var/run/wpa_supplicant/eth1' manually if it is not used anymore
Failed to initialize control interface '/var/run/wpa_supplicant'.
You may have another wpa_supplicant process already running or the file was
left by an unclean termination of wpa_supplicant in which case you will need
to manually remove this file before starting wpa_supplicant again.
Failed to add interface eth1
State: DISCONNECTED -> DISCONNECTED
No keys have been configured - skip key clearing
EAPOL: External notification - portEnabled=0
EAPOL: External notification - portValid=0
wpa_driver_wext_set_wpa
wpa_driver_wext_set_drop_unencrypted
wpa_driver_wext_set_countermeasures
No keys have been configured - skip key clearing
Cancelling scan request

Anyone any ideas?

Thanks!

Bou

[1975]

I got by this problem by first deactivating my eth1 in System - Administration - Networking

Now I get the following problem:

bou@nlyehvsaq1nb0lf:~$ sudo wpa_supplicant -w -Dwext -i eth1 -c/etc/wpa_supplicant.conf -dd
Initializing interface 'eth1' conf '/etc/wpa_supplicant.conf' driver 'wext' ctrl_interface 'N/A'
Configuration file '/etc/wpa_supplicant.conf' -> '/etc/wpa_supplicant.conf'
Reading configuration file '/etc/wpa_supplicant.conf'
ctrl_interface='/var/run/wpa_supplicant'
Line: 4 - start of a new network block
ssid - hexdump_ascii(len=14):
     73 65 6e 73 6f 2d 75 6e 69 63 6f 2e 6e 6c         senso-unico.nl
scan_ssid=1 (0x1)
proto: 0x3
key_mgmt: 0x2
pairwise: 0x18
group: 0x18
PSK - hexdump(len=32): [REMOVED]
Priority group 0
   id=0 ssid='senso-unico.nl'
Initializing interface (2) 'eth1'
EAPOL: SUPP_PAE entering state DISCONNECTED
EAPOL: KEY_RX entering state NO_KEY_RECEIVE
EAPOL: SUPP_BE entering state INITIALIZE
EAP: EAP entering state DISABLED
EAPOL: External notification - portEnabled=0
EAPOL: External notification - portValid=0
SIOCGIWRANGE: WE(compiled)=19 WE(source)=18 enc_capa=0xf
  capabilities: key_mgmt 0xf enc 0xf
Own MAC address: 00:13:ce:d9:72:f3
wpa_driver_wext_set_wpa
wpa_driver_wext_set_key: alg=0 key_idx=0 set_tx=0 seq_len=0 key_len=0
wpa_driver_wext_set_key: alg=0 key_idx=1 set_tx=0 seq_len=0 key_len=0
wpa_driver_wext_set_key: alg=0 key_idx=2 set_tx=0 seq_len=0 key_len=0
wpa_driver_wext_set_key: alg=0 key_idx=3 set_tx=0 seq_len=0 key_len=0
wpa_driver_wext_set_countermeasures
wpa_driver_wext_set_drop_unencrypted
Setting scan request: 0 sec 100000 usec
Added interface eth1
Wireless event: cmd=0x8b06 len=8
RTM_NEWLINK, IFLA_IFNAME: Interface 'eth1' added
RTM_NEWLINK, IFLA_IFNAME: Interface 'eth1' added
State: DISCONNECTED -> SCANNING
Starting AP scan (specific SSID)
Scan SSID - hexdump_ascii(len=14):
     73 65 6e 73 6f 2d 75 6e 69 63 6f 2e 6e 6c         senso-unico.nl
Scan timeout - try to get results
Received 0 bytes of scan results (0 BSSes)
Scan results: 0
Selecting BSS from priority group 0
No suitable AP found.
Setting scan request: 5 sec 0 usec
Starting AP scan (broadcast SSID)
Scan timeout - try to get results
Received 0 bytes of scan results (0 BSSes)
Scan results: 0
Selecting BSS from priority group 0
No suitable AP found.

What does that mean, "no suitable AP found"?

[1975]

From what you have written, I see you have an Atheros-based wireless card, so in the wpa_supplicant run command you should change "-Dwext" into "-Dmadwifi".

I have an Intel Pro Wireless 2200, and I now use -Dwext, is that ok?

[Nugget21]

Hey guys.

So I just switched to Ubuntu from Fedora today and I'm trying to get my Intel 2200b/g going (as I couldn't on Fedora either!!!

Few questions:

1) Which driver should I be using for the 2200? Dwext or Dipw?
2) No matter what I seem to do it doesn't even look like my wireless LED lights up at all!
3) Is this really what has to be done to connect to any WPA network? Seems a bit long winded.

Thanks in advance guys...

[ingo]

I tried farting around with lots of code in my /etc/network/interfaces, Knet, KWlan, KwifiManager and what have you - all to no avail.

This little howto did it for me and my IBM T41 - bloody excellent work!

Thanks a million!

Ingo

[ingo]

ok, first it worked, then it didn't, then it did again...

worrisome!

switched to knetworkmanager (https://wiki.ubuntu.com/DapperKNetworkmanager) and it is the absolute killer when it comes to working with networks.

there is a little configuration to be done (feel free to ask questions) but quite simply superb.

[corax]

Hi everyone !

First I' d like to congratulate to luca_linux for this very nice howto !

I have 3 minor problems ...

1,To luca: you also have ipw2200 why is it not working with

sudo wpa_supplicant -Bw -Dipw -i eth0 -c/etc/wpa_supplicant.conf

It works if I use -Dwext so it is not a big thing I'm just curious

2,Any of you guys (and/or girls ) tried to use ipw2200 chip with WPA under M$ *******r ? Because if I switch my network to WPA my other machines with ipw2200 (and XP) would not connect.

I read some articles about ipw2200 + WPA under XP but none of them give straight and exact explanation (unlike this GREAT howto )

3, Is WPA 2 possible somehow ? My router is capable for sure ... but I think ipw2200 will be not enough for that

Thanks for all !

[s-bris]

Hi ,

I have installed ubuntu 6.10 on my dell inspirion 6000 and love it (the LAN card works fine and I can get itnernet) - one glitch - quite major - I can't get the wireless inbuilt centrino adaptor to work - ultimatley I want it to work over my WPA TKIP connection that my existing windows boxes use.

As I want to transition away from Windows this is the only factor stopping me from making the switch on all my computers to Ubuntu - so please help if possible.

When I do an iwlist I can see that eth1 seems to be picking up my wireless access point SSID. But it will not connect. I have followed the above instructions except when I type in the wpa_passphrase your_ssid your_psk - nothing comes back.

Do I have to download the tar files suggested in http://www.ubuntuforums.org/showthread.php?t=26623 , and then extract and install them to het wpa+passphrase to work or should they be there with 6.10 ?

So is the psk that needs to go into the psk part of the wpa_supplicant file ned to be generated by using the wpa_passphrase command ?


thanks heaps
steve

[ingo]

Hi s-bris,

even though I have never run Ubuntu (Kubuntu is my poison) I am certain that you might want to try this little beauty

https://wiki.ubuntu.com/DapperKNetworkmanager

Not only does it list all the networks your card can see, but it also takes care of wep and wpa for you.

HTH