Ho deciso di fare tutto a mano anche per imparare bene:
Dato che il mio portatile ha anche un chip wireless 802.11b/g
PLUTO:~# lspci | grep -i wireless
02:02.0 Network controller: Broadcom Corporation BCM4306 802.11b/g Wireless LAN Controller (rev 03)
ho provato a configurare il file /etc/network/interfaces in questo modo:
PLUTO:~# cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
allow-hotplug eth1
iface eth1 inet static
address 192.168.1.3
netmask 255.255.255.0
network 192.168.1.0
broadcast 192.168.1.255
gateway 192.168.1.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 192.168.1.1
iface eth2 inet static
address 192.168.1.3
netmask 255.255.255.0
network 192.168.1.0
broadcast 192.168.1.255
gateway 192.168.1.1
dns-nameservers 192.168.1.1
wireless-essid Reparto_giorno
wireless-mode Manager
wireless-channel 6
wireless-ap 00:12:A9:55:11:43
wireless-key 62D20F769AC17D958E31DF5039D088E1
auto eth1
Dove eth1 e` l'interfaccia della scheda di rete cablata; mentre eth2 e` l'interfaccia del chip di rete wireless.
Il valore di wireless-ap e` il MAC del mio AP Client/Repeater (che e` connesso ad un AP "Server" che e` collegato via cavo ad un firewall hardware che funge da gateway) ed il valore di wireless-key e` la chiave WEP a 152 bit generata dal mio AP Client/Repeater.
Dopo aver riavviato Linux, ho dato i seguenti comandi da un terminale:
PLUTO:~# ifconfig
eth1 Link encap:Ethernet HWaddr 00:02:3F:6D:7D:5C
inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0
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:193 Base address:0xa000
eth2 Link encap:Ethernet HWaddr 00:90:4B:49:F5:3B
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:42 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:1764 (1.7 KiB)
Interrupt:5
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:58 errors:0 dropped:0 overruns:0 frame:0
TX packets:58 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4870 (4.7 KiB) TX bytes:4870 (4.7 KiB)
PLUTO:~# iwconfig
lo no wireless extensions.
eth1 no wireless extensions.
eth0 no wireless extensions.
eth2 IEEE 802.11b/g ESSID:off/any Nickname:"Broadcom 4306"
Mode:Managed Frequency=2.484 GHz Access Point: Invalid
Bit Rate=1 Mb/s Tx-Power=15 dBm
RTS thr:off Fragment thr:off
Encryption key:off
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
sit0 no wireless extensions.
e, fin qui, mi sembra tutto ok.
Ora, ho disattivato eth1 ed attivato eth2 cosi`:
PLUTO:~# ifdown eth1
PLUTO:~# ifup eth2
PLUTO:~# ifconfig eth2
eth2 Link encap:Ethernet HWaddr 00:90:4B:49:F5:3B
inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::290:4bff:fe49:f53b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1 errors:0 dropped:7 overruns:0 frame:0
TX packets:120 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:22 (22.0 b) TX bytes:6536 (6.3 KiB)
Interrupt:5
PLUTO:~# iwconfig eth2
eth2 IEEE 802.11b/g ESSID:"Reparto_giorno" Nickname:"Broadcom 4306"
Mode:Managed Frequency=2.437 GHz Access Point: 00:12:A9:55:11:43
Bit Rate=11 Mb/s Tx-Power=15 dBm
RTS thr:off Fragment thr:off
Encryption key:62D2-0F76-9AC1-7D95-8E31-DF50-39 Security mode:open
Link Quality=100/100 Signal level=3/3 Noise level=188/100
Rx invalid nwid:0 Rx invalid crypt:7 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
A questo punto, la spia del Wireless incomincia a lampeggiare e vedo, dall'interfaccia WEB del mio AP Client/Repeater, che il portatile e` connesso. Per sicurezza, provo a scrivere:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
localnet * 255.255.255.0 U 0 0 0 eth2
default 192.168.1.1 0.0.0.0 UG 0 0 0 eth2
A questo punto, noto che l'ultima riga stenta ad apparire. Quindi, scrivo:
PLUTO:~# cat /proc/net/wireless
Inter-| sta-| Quality | Discarded packets | Missed | WE
face | tus | link level noise | nwid crypt frag retry misc | beacon | 20
eth2: 0000 100. 3. 187. 0 73 0 0 0 0
PLUTO:~# tail -n 52 /var/log/messages
May 22 12:52:56 localhost kernel: eth1: link down
May 22 12:52:56 localhost kernel: NET: Registered protocol family 10
May 22 12:52:56 localhost kernel: lo: Disabled Privacy Extensions
May 22 12:52:56 localhost kernel: ADDRCONF(NETDEV_UP): eth1: link is not ready
May 22 12:52:56 localhost kernel: IPv6 over IPv4 tunneling driver
May 22 12:52:57 localhost hpiod: 1.6.10 accepting connections at 2208...
May 22 12:53:00 localhost kernel: ACPI: Battery Slot [BAT1] (battery present)
May 22 12:53:00 localhost kernel: ACPI: AC Adapter [ACAD] (on-line)
May 22 12:53:00 localhost kernel: ACPI: Power Button (FF) [PWRF]
May 22 12:53:00 localhost kernel: ACPI: Lid Switch [LID]
May 22 12:53:00 localhost kernel: ACPI: Power Button (CM) [PWRB]
May 22 12:53:01 localhost kernel: lp0: using parport0 (interrupt-driven).
May 22 12:53:01 localhost kernel: ppdev: user-space parallel port driver
May 22 12:53:06 localhost dhcdbd: Started up.
May 22 12:53:06 localhost kernel: bcm43xx: PHY connected
May 22 12:53:06 localhost kernel: bcm43xx: Microcode rev 0x127, pl 0xe (2005-04-18 02:36:27)
May 22 12:53:06 localhost kernel: bcm43xx: Radio turned on
May 22 12:53:07 localhost kernel: bcm43xx: Chip initialized
May 22 12:53:07 localhost kernel: bcm43xx: 32-bit DMA initialized
May 22 12:53:07 localhost kernel: bcm43xx: Keys cleared
May 22 12:53:07 localhost kernel: bcm43xx: Selected 802.11 core (phytype 2)
May 22 12:53:07 localhost kernel: ADDRCONF(NETDEV_UP): eth2: link is not ready
May 22 12:53:41 localhost kernel: [drm] Initialized drm 1.0.1 20051102
May 22 12:53:41 localhost kernel: ACPI: PCI Interrupt 0000:01:05.0[A] -> GSI 16 (level, low) -> IRQ 185
May 22 12:53:41 localhost kernel: [drm] Initialized radeon 1.25.0 20060524 on minor 0
May 22 12:53:42 localhost kernel: Bluetooth: Core ver 2.10
May 22 12:53:42 localhost kernel: NET: Registered protocol family 31
May 22 12:53:42 localhost kernel: Bluetooth: HCI device and connection manager initialized
May 22 12:53:42 localhost kernel: Bluetooth: HCI socket layer initialized
May 22 12:53:42 localhost kernel: Bluetooth: L2CAP ver 2.8
May 22 12:53:42 localhost kernel: Bluetooth: L2CAP socket layer initialized
May 22 12:53:42 localhost kernel: Bluetooth: RFCOMM socket layer initialized
May 22 12:53:42 localhost kernel: Bluetooth: RFCOMM TTY layer initialized
May 22 12:53:42 localhost kernel: Bluetooth: RFCOMM ver 1.8
May 22 12:53:43 localhost kernel: mtrr: 0xf0000000,0x8000000 overlaps existing 0xf0000000,0x4000000
May 22 12:53:43 localhost last message repeated 2 times
May 22 12:53:43 localhost kernel: agpgart: Found an AGP 3.0 compliant device at 0000:00:00.0.
May 22 12:53:43 localhost kernel: agpgart: Putting AGP V3 device at 0000:00:00.0 into 4x mode
May 22 12:53:43 localhost kernel: agpgart: Putting AGP V3 device at 0000:01:05.0 into 4x mode
May 22 12:53:43 localhost kernel: [drm] Setting GART location based on new memory map
May 22 12:53:43 localhost kernel: [drm] Loading R200 Microcode
May 22 12:53:43 localhost kernel: [drm] writeback test succeeded in 1 usecs
May 22 12:54:17 localhost gconfd (root-3232): inizializzazione (versione 2.16.1), pid 3232, utente "root"
May 22 12:54:17 localhost gconfd (root-3232): L'indirizzo "xml:readonly:/etc/gconf/gconf.xml.mandatory" è stato risolta ad una sorgente di configurazione in sola lettura in posizione 0
May 22 12:54:17 localhost gconfd (root-3232): L'indirizzo "xml:readwrite:/root/.gconf" è stato risolto ad una sorgente di configurazione scrivibile in posizione 1
May 22 12:54:17 localhost gconfd (root-3232): L'indirizzo "xml:readonly:/etc/gconf/gconf.xml.defaults" è stato risolta ad una sorgente di configurazione in sola lettura in posizione 2
May 22 12:54:17 localhost gconfd (root-3232): L'indirizzo "xml:readonly:/var/lib/gconf/debian.defaults" è stato risolta ad una sorgente di configurazione in sola lettura in posizione 3
May 22 12:54:17 localhost gconfd (root-3232): L'indirizzo "xml:readonly:/var/lib/gconf/defaults" è stato risolta ad una sorgente di configurazione in sola lettura in posizione 4
May 22 12:54:23 localhost gconfd (root-3232): L'indirizzo "xml:readwrite:/root/.gconf" è stato risolto ad una sorgente di configurazione scrivibile in posizione 0
May 22 12:57:45 localhost kernel: bcm43xx: set security called, .active_key = 0, .level = 1, .enabled = 1, .encrypt = 1
May 22 12:57:45 localhost kernel: SoftMAC: Open Authentication completed with 00:12:a9:55:11:43
May 22 12:57:45 localhost kernel: ADDRCONF(NETDEV_CHANGE): eth2: link becomes ready
e noto che la linea wireless e` disturbata (parametro noise). Infatti, pingando il gateway (192.168.1.1), mi indica che e` irraggiugbile (dimenticavo di dirvi che la spia Wireless del notebook rimane quasi sempre spenta anche se l'AP mi indica che il notebook e` connesso).
Che cosa c'e` che non va?
GRAZIE
CIAO
Configurazione delle interfacce di rete
Forum Bloccato
Inserito il - 21/05/2007 : 10:44:41
