How To: Manual Network Configuration without the need for Network Manager

**imdano** · March 25th, 2008

Originally Posted by kevdog

imdano

Isn't that what differentiates ifconfig <interface> up vs ifup <interface>?? Doesn't the latter command ifup read the network interfaces file when bringing up the interface and use this file as a configuration file to set the parameters?? This is what I always believed. So I guess if you needed to bring up the interface you would us ifup rather than ifconfig up.

Am I wrong in this assumption?

Yes, that is the difference. Didn't think about that, but using ifup would probably work just as well.

**ante.wessels** · March 25th, 2008

Originally Posted by imdano

What commands are you using to load the cuervo driver manually? Reading his site it looks like it relys on commands getting executed in /etc/network/interfaces. NetworkManager makes use of that file to determine which interfaces to use, and what commands to run when bringing them up/down. Without NM running, those commands won't get executed unless you run them, which means the driver won't load correctly. I'm not an expert on the inner-workings of NM, but from what I've read of their source code they don't mess around with anything at the driver level. They just make use of what's already there.

The driver directory has a wlan0up script, so that is the one I use, manually. The /etc/network/interfaces file has no wlan0 entry on my machine, NM does not depend on it. If I disable the driver, start NM, NM does not show wlan0. If I then load the driver, NM shows wlan0. So NM spots the interfaces when they become available (without needing the /etc/network/interfaces file).

I guess we are going of topic

**kevdog** · March 25th, 2008

Guess I'll have to redownload the driver and take a look at that script.

**WadiJM** · March 26th, 2008

Firs of all thank you kevdog for your quick reply.
Today after reinstalling and changing 100 configuration files I get the following output

Code:

wadi@wadi-laptop:~$ sudo wpa_supplicant -w -Dwext -ieth1 -c /etc/wpa_supplicant.conf
l2_packet_receive - recvfrom: Network is down
ioctl[SIOCSIWSCAN]: No such device
Failed to initiate AP scan.
ioctl[SIOCGIWSCAN]: No such device
ioctl[SIOCSIWSCAN]: No such device
Failed to initiate AP scan.
CTRL-EVENT-TERMINATING - signal 2 received

This is my /etc/wpa_suplicant.conf file

Code:

ctrl_interface=/var/run/wpa_supplicant

network={
        ssid="aco"
        psk="pepe"
        key_mgmt=WPA-PSK
        proto=RSN
        pairwise=CCMP
}

Regarding to the command sudo wpa_supplicant -w -Dwext -ieth1 -c /etc/wpa_supplicant.conf -dd the output is the following:

Code:

Configuration file '/etc/wpa_supplicant.conf' -> '/etc/wpa_supplicant.conf'
Reading configuration file '/etc/wpa_supplicant.conf'
ctrl_interface='/var/run/wpa_supplicant'
Line: 3 - start of a new network block
ssid - hexdump_ascii(len=3):
     61 63 6f                                          aco             
PSK (ASCII passphrase) - hexdump_ascii(len=9): [REMOVED]
key_mgmt: 0x2
proto: 0x2
pairwise: 0x10
PSK (from passphrase) - hexdump(len=32): [REMOVED]
Priority group 0
   id=0 ssid='aco'
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)=22 WE(source)=16 enc_capa=0xf
  capabilities: key_mgmt 0xf enc 0xf
WEXT: Operstate: linkmode=1, operstate=5
Own MAC address: 00:1c:bf:13:b5:5b
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
RTM_NEWLINK: operstate=0 ifi_flags=0x1003 ([UP])
Wireless event: cmd=0x8b06 len=12
State: DISCONNECTED -> SCANNING
Starting AP scan (broadcast SSID)
Trying to get current scan results first without requesting a new scan to speed up initial association
Received 651 bytes of scan results (2 BSSes)
Scan results: 2
Selecting BSS from priority group 0
Try to find WPA-enabled AP
0: 00:1b:11:d3:b8:89 ssid='aco' wpa_ie_len=24 rsn_ie_len=22 caps=0x11
   skip RSN IE - PTK cipher mismatch
1: 00:02:72:55:9b:fb ssid='HectorWiFi' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - no WPA/RSN IE
Try to find non-WPA AP
0: 00:1b:11:d3:b8:89 ssid='aco' wpa_ie_len=24 rsn_ie_len=22 caps=0x11
   skip - non-WPA network not allowed
1: 00:02:72:55:9b:fb ssid='HectorWiFi' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - SSID mismatch
No suitable AP found.
Setting scan request: 0 sec 0 usec
Starting AP scan (broadcast SSID)
Scan timeout - try to get results
Received 980 bytes of scan results (3 BSSes)
Scan results: 3
Selecting BSS from priority group 0
Try to find WPA-enabled AP
0: 00:1b:11:d3:b8:89 ssid='aco' wpa_ie_len=24 rsn_ie_len=22 caps=0x11
   skip RSN IE - PTK cipher mismatch
1: 00:1a:70:5e:3a:4c ssid='elzefiro' wpa_ie_len=26 rsn_ie_len=0 caps=0x11
   skip - SSID mismatch
2: 00:02:72:55:9b:fb ssid='HectorWiFi' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - no WPA/RSN IE
Try to find non-WPA AP
0: 00:1b:11:d3:b8:89 ssid='aco' wpa_ie_len=24 rsn_ie_len=22 caps=0x11
   skip - non-WPA network not allowed
1: 00:1a:70:5e:3a:4c ssid='elzefiro' wpa_ie_len=26 rsn_ie_len=0 caps=0x11
   skip - SSID mismatch
2: 00:02:72:55:9b:fb ssid='HectorWiFi' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - SSID mismatch
No suitable AP found.
Setting scan request: 5 sec 0 usec
Starting AP scan (broadcast SSID)
Scan timeout - try to get results
Received 1273 bytes of scan results (4 BSSes)
Scan results: 4
Selecting BSS from priority group 0
Try to find WPA-enabled AP
0: 00:1b:11:d3:b8:89 ssid='aco' wpa_ie_len=24 rsn_ie_len=22 caps=0x11
   skip RSN IE - PTK cipher mismatch
1: 00:1a:70:5e:3a:4c ssid='elzefiro' wpa_ie_len=26 rsn_ie_len=0 caps=0x11
   skip - SSID mismatch
2: 00:16:cf:56:d7:b1 ssid='Wi-Fi Arnet' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - no WPA/RSN IE
3: 00:02:72:55:9b:fb ssid='HectorWiFi' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - no WPA/RSN IE
Try to find non-WPA AP
0: 00:1b:11:d3:b8:89 ssid='aco' wpa_ie_len=24 rsn_ie_len=22 caps=0x11
   skip - non-WPA network not allowed
1: 00:1a:70:5e:3a:4c ssid='elzefiro' wpa_ie_len=26 rsn_ie_len=0 caps=0x11
   skip - SSID mismatch
2: 00:16:cf:56:d7:b1 ssid='Wi-Fi Arnet' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - SSID mismatch
3: 00:02:72:55:9b:fb ssid='HectorWiFi' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - SSID mismatch
No suitable AP found.
Setting scan request: 5 sec 0 usec
Starting AP scan (broadcast SSID)
Scan timeout - try to get results
Received 943 bytes of scan results (3 BSSes)
Scan results: 3
Selecting BSS from priority group 0
Try to find WPA-enabled AP
0: 00:1b:11:d3:b8:89 ssid='aco' wpa_ie_len=24 rsn_ie_len=22 caps=0x11
   skip RSN IE - PTK cipher mismatch
1: 00:16:cf:56:d7:b1 ssid='Wi-Fi Arnet' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - no WPA/RSN IE
2: 00:02:72:55:9b:fb ssid='HectorWiFi' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - no WPA/RSN IE
Try to find non-WPA AP
0: 00:1b:11:d3:b8:89 ssid='aco' wpa_ie_len=24 rsn_ie_len=22 caps=0x11
   skip - non-WPA network not allowed
1: 00:16:cf:56:d7:b1 ssid='Wi-Fi Arnet' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - SSID mismatch
2: 00:02:72:55:9b:fb ssid='HectorWiFi' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - SSID mismatch
No suitable AP found.
Setting scan request: 5 sec 0 usec
Starting AP scan (broadcast SSID)
Scan timeout - try to get results
Received 651 bytes of scan results (2 BSSes)
Scan results: 2
Selecting BSS from priority group 0
Try to find WPA-enabled AP
0: 00:1b:11:d3:b8:89 ssid='aco' wpa_ie_len=24 rsn_ie_len=22 caps=0x11
   skip RSN IE - PTK cipher mismatch
1: 00:02:72:55:9b:fb ssid='HectorWiFi' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - no WPA/RSN IE
Try to find non-WPA AP
0: 00:1b:11:d3:b8:89 ssid='aco' wpa_ie_len=24 rsn_ie_len=22 caps=0x11
   skip - non-WPA network not allowed
1: 00:02:72:55:9b:fb ssid='HectorWiFi' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - SSID mismatch
No suitable AP found.
Setting scan request: 5 sec 0 usec
Starting AP scan (broadcast SSID)
Scan timeout - try to get results
Received 650 bytes of scan results (2 BSSes)
Scan results: 2
Selecting BSS from priority group 0
Try to find WPA-enabled AP
0: 00:1b:11:d3:b8:89 ssid='aco' wpa_ie_len=24 rsn_ie_len=22 caps=0x11
   skip RSN IE - PTK cipher mismatch
1: 00:02:72:55:9b:fb ssid='HectorWiFi' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - no WPA/RSN IE
Try to find non-WPA AP
0: 00:1b:11:d3:b8:89 ssid='aco' wpa_ie_len=24 rsn_ie_len=22 caps=0x11
   skip - non-WPA network not allowed
1: 00:02:72:55:9b:fb ssid='HectorWiFi' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - SSID mismatch
No suitable AP found.
Setting scan request: 5 sec 0 usec
Starting AP scan (broadcast SSID)
Scan timeout - try to get results
Received 651 bytes of scan results (2 BSSes)
Scan results: 2
Selecting BSS from priority group 0
Try to find WPA-enabled AP
0: 00:1b:11:d3:b8:89 ssid='aco' wpa_ie_len=24 rsn_ie_len=22 caps=0x11
   skip RSN IE - PTK cipher mismatch
1: 00:02:72:55:9b:fb ssid='HectorWiFi' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - no WPA/RSN IE
Try to find non-WPA AP
0: 00:1b:11:d3:b8:89 ssid='aco' wpa_ie_len=24 rsn_ie_len=22 caps=0x11
   skip - non-WPA network not allowed
1: 00:02:72:55:9b:fb ssid='HectorWiFi' wpa_ie_len=0 rsn_ie_len=0 caps=0x11
   skip - SSID mismatch
No suitable AP found.
Setting scan request: 5 sec 0 usec

Thanks in advance,
Regards,
Wadi

**archman** · March 26th, 2008

Originally Posted by kevdog

Code:

ap_scan=1
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=0
eapol_version=1
ap_scan=0
network={
key_mgmt=IEEE8021X
eap=TTLS
anonymous_identity="xxx@yyy.yy"
phase2="auth=PAP"
identitctrl_interface=/var/run/wpa_supplicant
ctrl_interfy="xxx@yyy.yy"
password="xxx"
}

ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=0
eapol_version=1
ap_scan=1
network={
ssid="eduroam"
proto=WPA WPA2
key_mgmt=WPA-EAP
group=CCMP TKIP
eap=TTLS
anonymous_identity="xxx@yyy.yy"
phase2="auth=PAP"
identity="xxx@yyy.yy"
password="xxx"
}

Do you need to repeat the following information:
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=0
eapol_version=1
ap_scan=1

I don't have a lot of experience with TTLS, EAP.

here's the output:
(attachment)

**kevdog** · March 26th, 2008

Ok,

First post
lshw -C network
iwlist scan
ifconfig

And modify the wpa_supplicant.conf file to connect to only one AP for now. Lets just go with the basics. Can you connect to an unencrypted network?

**archman** · March 26th, 2008

Originally Posted by kevdog

Ok,

First post
lshw -C network
iwlist scan
ifconfig

And modify the wpa_supplicant.conf file to connect to only one AP for now. Lets just go with the basics. Can you connect to an unencrypted network?

thank you for your help, but i solved it with: http://ubuntuforums.org/showthread.p...48#post4410798

**fretnoise** · March 27th, 2008

Originally Posted by kevdog

Just an idea since I see that you like the gui network manager gives you (a lot of people do). Uninstall network manager and try WICD. This provides a GUI, and I bet you will find this much more reliable.

Thank's kevdog. Wireless networking is playing with me... as soon
as I post that I have problems again, it starts working. It's been
working fine so far. If it fails again, I'll try WICD.

**Cain67** · March 30th, 2008

hi, im using a macbook with madwifi, and am connecting to a WPA1 network..

connecting via network manager doesnt seem to work...
so i tried what you said...

and it was all going fine untill i entered this command:

sudo wpa_supplicant -w -D madwifi -i wifi0 -c/etc/wpa_supplicant.conf -dd

and then got this:::

PHP Code:


Initializing interface 'wifi0' conf '/etc/wpa_supplicant.conf' driver 'madwifi' ctrl_interface 'N/A' bridge 'N/A'

Configuration file '/etc/wpa_supplicant.conf' -> '/etc/wpa_supplicant.conf'

Reading configuration file '/etc/wpa_supplicant.conf'

ap_scan=1

ctrl_interface='/var/run/wpa_supplicant'

Line: 4 - start of a new network block

ssid - hexdump_ascii(len=3):

     56 56 56                                          VVV             

scan_ssid=0 (0x0)

proto: 0x1

key_mgmt: 0x2

PSK (ASCII passphrase) - hexdump_ascii(len=9): [REMOVED]

pairwise: 0x8

group: 0x8

PSK (from passphrase) - hexdump(len=32): [REMOVED]

Priority group 0

   id=0 ssid='VVV'

Initializing interface (2) 'wifi0'

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

ioctl[SIOCSIWMODE]: Operation not supported

Could not configure driver to use managed mode

ioctl[SIOCGIWRANGE]: Operation not supported

WEXT: Operstate: linkmode=1, operstate=5

ioctl[IEEE80211_IOCTL_SETPARAM]: Operation not supported

wpa_driver_madwifi_init: failed to set wpa_supplicant-based roaming

ioctl[SIOCSIWAP]: Operation not supported

WEXT: Operstate: linkmode=0, operstate=6

Failed to initialize driver interface

Failed to add interface wifi0

Cancelling scan request

Cancelling authentication timeout

any help would be great... as i am unable to connect via anything other than a cable.

**kevdog** · March 30th, 2008

This line:
sudo wpa_supplicant -w -D madwifi -i wifi0 -c/etc/wpa_supplicant.conf -dd

is likely supposed to be:
sudo wpa_supplicant -w -D madwifi -i ath0 -c/etc/wpa_supplicant.conf -dd

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