wifi help need w/ WEP encryption

This is a discussion on wifi help need w/ WEP encryption within the Linux Security forums, part of the System Security and Security Related category; Any help appreciated. I can not get WEP encryption to work under Linux (Mandriva LE2005) with my PCI wifi modem (...


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  #1 (permalink)  
Old 11-21-2005
Proteus
 
Posts: n/a
Default wifi help need w/ WEP encryption

Any help appreciated. I can not get WEP encryption to work under Linux
(Mandriva LE2005) with my PCI wifi modem (ZyXEL ZyAIR G-300, which states
on the box "Great security with 64/128 bits WEP and Wi-Fi WPA). Of course
I would prefer WPA, but I will take WEP 64 bit at this point in time. WEP
64-bit works great with WindowsXP, so I know the router and modem are
capable of doing this. Without encryption, the wifi modem works great
under linux.

I have triple-checked the 10 digit (64bit) hex code of the router. Here
below is the output of ifconfig, iwconfig, lspci, /var/log/messages. What
more can I do? Perhaps WEP is just not possible under Linux with this
modem?

I am using a linuxant.com driver; I am open to trying some other
driver (tried Mandriva ndiswrapper before linuxant and could not get that
to work, but I believe I once heard of a more specific ndiswrapper site
with better drivers, not sure where that is?)


######################################
# Wireless encryption OFF on router #
# Able to open browser / surf net #
######################################

[root@localhost beowulf]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:A0:C5:B2:18:FA
inet addr:192.168.1.104 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:58 errors:0 dropped:0 overruns:0 frame:0
TX packets:77 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:38652 (37.7 Kb) TX bytes:6597 (6.4 Kb)

eth1 Link encap:Ethernet HWaddr 00:0D:88:26:F4:5A
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:16 Base address:0xcf00

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

[root@localhost beowulf]# iwconfig
lo no wireless extensions.

eth1 no wireless extensions.

eth0 IEEE 802.11g ESSID:"fragzone" Nickname:"localhost"
Mode:Managed Frequency:2.412 GHz Access Point: 00:0F:66:56:6F:51
Bit Rate=11 Mb/s
RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=94/94 Signal level=-40 dBm Noise level=-154 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:55 Missed beacon:0



######################################
# Wireless encryption ON on router #
# WEP 64-bit encryption turned ON #
######################################
# No web browser functioning now #
# since wifi WEP encryption is ON #
# in router but not with wifi eth0 #
######################################
[root@localhost beowulf]# ifdown eth0
[root@localhost beowulf]# ifconfig
eth1 Link encap:Ethernet HWaddr 00:0D:88:26:F4:5A
inet6 addr: fe80::20d:88ff:fe26:f45a/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:378 (378.0 b)
Interrupt:16 Base address:0xcf00

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

sit0 Link encap:IPv6-in-IPv4
inet6 addr: ::192.168.1.104/96 Scope:Compat
inet6 addr: ::127.0.0.1/96 Scope:Unknown
UP RUNNING NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

[root@localhost beowulf]# iwconfig
lo no wireless extensions.

eth1 no wireless extensions.

eth0 IEEE 802.11g ESSID:"fragzone" Nickname:"localhost"
Mode:Managed Frequency:2.412 GHz Access Point: 00:0F:66:56:6F:51
Bit Rate=11 Mb/s
RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=4/94 Signal level=-75 dBm Noise level=-154 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:163 Missed beacon:0

sit0 no wireless extensions.

[root@localhost beowulf]# ifup eth0
Determining IP information for eth0... failed.


######################################
# Wireless encryption ON on router #
# WEP 64-bit encryption turned ON #
######################################
# Attempting to add WEP on wifi eth0 #
######################################
# Passphrase theraininspain used for #
# 64bit WEP, key 1 of 4 gives the hex#
# key of 609ADD2C2A as 10 digit key #
######################################

[root@localhost beowulf]# iwconfig eth0 key 609ADD2C2A
[root@localhost beowulf]# iwconfig
lo no wireless extensions.

eth1 no wireless extensions.

eth0 IEEE 802.11g ESSID:"fragzone" Nickname:"localhost"
Mode:Managed Frequency:2.412 GHz Access Point: 00:0F:66:56:6F:51
Bit Rate=11 Mb/s
RTS thr:off Fragment thr:off
Encryption key:609A-DD2C-2A
Power Management:off
Link Quality=54/94 Signal level=-46 dBm Noise level=-154 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:114 Missed beacon:0

sit0 no wireless extensions.

[root@localhost beowulf]# ifup eth0
Determining IP information for eth0... failed.

[root@localhost beowulf]# iwconfig eth0 key open
[root@localhost beowulf]# iwconfig
lo no wireless extensions.

eth1 no wireless extensions.

eth0 IEEE 802.11g ESSID:"fragzone" Nickname:"localhost"
Mode:Managed Frequency:2.412 GHz Access Point: 00:0F:66:56:6F:51
Bit Rate=11 Mb/s
RTS thr:off Fragment thr:off
Encryption key:609A-DD2C-2A Security mode:open
Power Management:off
Link Quality=60/94 Signal level=-45 dBm Noise level=-154 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:123 Missed beacon:0

sit0 no wireless extensions.

[root@localhost beowulf]# ifup eth0
Determining IP information for eth0... failed.

[root@localhost beowulf]# iwconfig eth0 key restricted
[root@localhost beowulf]# ifup eth0
Determining IP information for eth0... failed.

######################################
# Complete reboot=> still no eth0 #
######################################

[root@localhost beowulf]# ifup eth0
Determining IP information for eth0... failed.


######################################
# lspci #
######################################
[root@localhost beowulf]# lspci
00:00.0 Host bridge: VIA Technologies, Inc. VT8366/A/7 [Apollo KT266/A/333]
00:01.0 PCI bridge: VIA Technologies, Inc. VT8366/A/7 [Apollo KT266/A/333 AGP]
00:07.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 0a)
00:07.1 Input device controller: Creative Labs SB Live! MIDI/Game Port (rev 0a)
00:08.0 Network controller: Intersil Corporation Intersil ISL3890 [Prism GT/Prism Duette] (rev 01)
00:09.0 Ethernet controller: D-Link System Inc RTL8139 Ethernet (rev 10)
00:11.0 ISA bridge: VIA Technologies, Inc. VT8233 PCI to ISA Bridge
00:11.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
00:11.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 1b)
00:11.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 1b)
00:11.4 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 1b)
01:00.0 VGA compatible controller: nVidia Corporation NV18 [GeForce4 MX 4000 AGP 8x] (rev c1)


######################################
# tail -f /var/log//messages #
######################################

[root@localhost beowulf]# tail -f /var/log//messages
Nov 20 18:53:08 localhost gconfd (beowulf-6753): Resolved address "xml:readonly:
/etc/gconf/gconf.xml.mandatory" to a read-only configuration source at position
0
Nov 20 18:53:08 localhost gconfd (beowulf-6753): Resolved address "xml:readwrite
:/home/beowulf/.gconf" to a writable configuration source at position 1
Nov 20 18:53:08 localhost gconfd (beowulf-6753): Resolved address "xml:readonly:
/etc/gconf/gconf.xml.defaults" to a read-only configuration source at position 2
Nov 20 18:53:09 localhost dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port
67 interval 4
Nov 20 18:53:13 localhost dhclient: No DHCPOFFERS received.
Nov 20 18:53:13 localhost dhclient: Trying recorded lease 192.168.1.104
Nov 20 18:53:16 localhost kernel: eth0: New link status: Disconnected (0002)
Nov 20 18:53:18 localhost kernel: eth0: New link status: Connected (0001)
Nov 20 18:54:51 localhost su(pam_unix)[6854]: authentication failure; logname= u
id=500 euid=0 tty= ruser=beowulf rhost= user=root
Nov 20 18:55:00 localhost su(pam_unix)[6855]: session opened for user root by (u
id=500)



######################################
# Wireless encryption OFF on router #
######################################

[root@localhost beowulf]# iwconfig eth0 enc off
[root@localhost beowulf]# iwconfig
lo no wireless extensions.

eth1 no wireless extensions.

eth0 IEEE 802.11g ESSID:"fragzone" Nickname:"localhost"
Mode:Managed Frequency:2.412 GHz Access Point: 00:0F:66:56:6F:51
Bit Rate=11 Mb/s
RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=65/94 Signal level=-44 dBm Noise level=-154 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:186 Missed beacon:0

sit0 no wireless extensions.

[root@localhost beowulf]# ifup eth0

Determining IP information for eth0... done.
[root@localhost beowulf]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:A0:C5:B2:18:FA
inet addr:192.168.1.104 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::2a0:c5ff:feb2:18fa/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:93 errors:0 dropped:0 overruns:0 frame:0
TX packets:95 errors:1 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:50450 (49.2 Kb) TX bytes:11164 (10.9 Kb)

eth1 Link encap:Ethernet HWaddr 00:0D:88:26:F4:5A
inet6 addr: fe80::20d:88ff:fe26:f45a/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:378 (378.0 b)
Interrupt:16 Base address:0xcf00

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host


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  #2 (permalink)  
Old 11-21-2005
Proteus
 
Posts: n/a
Default Re: wifi help need w/ WEP encryption

On Sun, 20 Nov 2005 19:15:31 -0600, Proteus wrote:

> Any help appreciated. I can not get WEP encryption to work under Linux
> (Mandriva LE2005) with my PCI wifi modem ...


Just to clarify, eth0 is the wifi modem, eth1 is a D-LINK wired modem that
I am not currently using.
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  #3 (permalink)  
Old 11-21-2005
Crunch
 
Posts: n/a
Default Re: wifi help need w/ WEP encryption

Proteus wrote:

> Any help appreciated. I can not get WEP encryption to work under Linux
> (Mandriva LE2005) with my PCI wifi modem (ZyXEL ZyAIR G-300, which states
> on the box "Great security with 64/128 bits WEP and Wi-Fi WPA). Of course
> I would prefer WPA, but I will take WEP 64 bit at this point in time. WEP
> 64-bit works great with WindowsXP, so I know the router and modem are
> capable of doing this. Without encryption, the wifi modem works great
> under linux.
>


iwconfig eth0 essid "whatever" key on key ##############
dhcpcd -dn eth0

First line sets the parameters for the Wi-Fi.
If your card supports 128 wep then simply use the longer key.

Second line asks the DHCP server for an IP address using the settings from
the first line. The -dn is "Debug mode" and "ask for New ip"


--
Stephen S.
-------------
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  #4 (permalink)  
Old 11-21-2005
kermit
 
Posts: n/a
Default Re: wifi help need w/ WEP encryption

Proteus wrote:

> Any help appreciated. I can not get WEP encryption to work under Linux
> (Mandriva LE2005) with my PCI wifi modem (ZyXEL ZyAIR G-300, which states
> on the box "Great security with 64/128 bits WEP and Wi-Fi WPA). Of course
> I would prefer WPA, but I will take WEP 64 bit at this point in time. WEP
> 64-bit works great with WindowsXP, so I know the router and modem are
> capable of doing this. Without encryption, the wifi modem works great
> under linux.
>


[...]
> ######################################
> # Wireless encryption OFF on router #
> # Able to open browser / surf net #
> ######################################
>
> [root@localhost beowulf]# ifconfig
> eth0 Link encap:Ethernet HWaddr 00:A0:C5:B2:18:FA
> inet addr:192.168.1.104 Bcast:192.168.1.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:58 errors:0 dropped:0 overruns:0 frame:0
> TX packets:77 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:38652 (37.7 Kb) TX bytes:6597 (6.4 Kb)

[...]
>
> [root@localhost beowulf]# iwconfig
> lo no wireless extensions.
>
> eth1 no wireless extensions.
>
> eth0 IEEE 802.11g ESSID:"fragzone" Nickname:"localhost"
> Mode:Managed Frequency:2.412 GHz Access Point:
> 00:0F:66:56:6F:51 Bit Rate=11 Mb/s
> RTS thr:off Fragment thr:off
> Encryption key:off
> Power Management:off
> Link Quality=94/94 Signal level=-40 dBm Noise level=-154 dBm
> Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
> Tx excessive retries:0 Invalid misc:55 Missed beacon:0

[...]
> [root@localhost beowulf]# ifdown eth0

[...]
> [root@localhost beowulf]# ifup eth0


ifup does whatever is predefined in network configuration for this
interface. If you have defined interface without WEP, it won't magically
use WEP just because you happen to enable it on other end.

> Determining IP information for eth0... failed.
>
>
> ######################################
> # Wireless encryption ON on router #
> # WEP 64-bit encryption turned ON #
> ######################################
> # Attempting to add WEP on wifi eth0 #
> ######################################
> # Passphrase theraininspain used for #
> # 64bit WEP, key 1 of 4 gives the hex#
> # key of 609ADD2C2A as 10 digit key #
> ######################################
>
> [root@localhost beowulf]# iwconfig eth0 key 609ADD2C2A

[...]
> [root@localhost beowulf]# ifup eth0
> Determining IP information for eth0... failed.


Ditto.

Try:

ifdown eth0
ip link set eth0 up
iwconfig eth0 essid fragzone
iwconfig eth0 key What-Ever-Key-You-Have
iwconfig eth0 essid fragzone
ifconfig eth0 Static-IP

the second essid is important and usually needed, the first one may be
needed with some cards and static IP is to avoid any issues with DHCP. If
it works, you may play with DHCP later.

Or you may just edit /etc/sysconfig/network-scripts/ifcfg-eth0. Simply add

WIRELESS_ENC_KEY=Your-Key

and use ifdown/ifup then.

=arvi=
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