Mobiles Internet via Infrarot und GPRS (Nokia 8310)

Nachdem der kabellose Zugang ins Netz per WLAN noch ;) nicht Ã¼berall gegeben ist, habe ich mich heute daran gemacht, meinem neuen Notebook die MÃ¶glichkeit zu geben, per Mobiltelephon und GPRS ins Netz zu kommen.

Hardware:

Asus S5600N Notebook
(da das Notebook ohne IrDA daher kommt) ednet USB to IrDA dongle (ca. EUR 20)
Nokia 8310 Mobiltelephon (Ã¶sterr. Netzbetreiber ONE)

Software:

Debian GNU/Linux Unstable (Kernel 2.6.8-2-686)
irda-utils
pppd
wvdial

Nach Einstecken des (ohne zuvor seine Linux-Tauglichkeit zu recherchieren gekauften) USB to IrDA Adapters lÃ¤sst mich ein Blick in /var/log/syslog aufatmen:
Feb 13 02:55:12 r5d5 kernel: usb 2-1: new full speed USB device using address 3 Feb 13 02:55:13 r5d5 kernel: SigmaTel STIr4200 IRDA/USB found at address 3, Vendor: 66f, Product: 4200 Feb 13 02:55:13 r5d5 kernel: IrDA: Registered SigmaTel device irda0 Feb 13 02:55:13 r5d5 usb.agent[3475]: stir4200: already loaded

Unter der Haube dieses Adapters steckt also von Linux unterstÃ¼tzte SigmaTel Hardware.

Nun kommen zum ersten Mal die irda-utils zum Einsatz. Mit
markus@r5d5:~ $ sudo irattach irda0 -s

bringt man den IrDA-Adapter nun dazu, nach Remote-GerÃ¤ten ausschau zu halten. Ob dies funktioniert hat, kÃ¶nnen wir folgendermaÃŸen Ã¼berprÃ¼fen:
markus@r5d5:~ $ sudo irdadump 02:13:45.381616 xid:cmd acff0841 > ffffffff S=6 s=3 (14) 02:13:45.481599 xid:cmd acff0841 > ffffffff S=6 s=4 (14) 02:13:45.581585 xid:cmd acff0841 > ffffffff S=6 s=5 (14) 02:13:45.681570 xid:cmd acff0841 > ffffffff S=6 s=* r5d5 hint=0400 [ Computer ] (20) 02:13:48.081206 xid:cmd acff0841 > ffffffff S=6 s=0 (14) 02:13:48.181191 xid:cmd acff0841 > ffffffff S=6 s=1 (14) 02:13:48.281176 xid:cmd acff0841 > ffffffff S=6 s=2 (14) 02:13:48.381162 xid:cmd acff0841 > ffffffff S=6 s=3 (14) 02:13:48.481143 xid:cmd acff0841 > ffffffff S=6 s=4 (14) 02:13:48.581129 xid:cmd acff0841 > ffffffff S=6 s=5 (14) 02:13:48.681114 xid:cmd acff0841 > ffffffff S=6 s=* r5d5 hint=0400 [ Computer ] (20) 02:13:51.080752 xid:cmd acff0841 > ffffffff S=6 s=0 (14) 02:13:51.180734 xid:cmd acff0841 > ffffffff S=6 s=1 (14) 02:13:51.280718 xid:cmd acff0841 > ffffffff S=6 s=2 (14) 02:13:51.380703 xid:cmd acff0841 > ffffffff S=6 s=3 (14) 02:13:51.480687 xid:cmd acff0841 > ffffffff S=6 s=4 (14) 02:13:51.580673 xid:cmd acff0841 > ffffffff S=6 s=5 (14) 02:13:51.680657 xid:cmd acff0841 > ffffffff S=6 s=* r5d5 hint=0400 [ Computer ] (20) 02:13:54.080300 xid:cmd acff0841 > ffffffff S=6 s=0 (14) 02:13:54.180278 xid:cmd acff0841 > ffffffff S=6 s=1 (14) 02:13:54.280262 xid:cmd acff0841 > ffffffff S=6 s=2 (14)

Kurzerhand am Handy Infrarot aktiviert und es in Reichweite des Dongles gelegt Ã¤ndert sich die Ausgabe von irdadump folgendermaÃŸen:
02:13:54.580216 xid:cmd acff0841 > ffffffff S=6 s=5 (14) 02:13:54.680202 xid:cmd acff0841 > ffffffff S=6 s=* r5d5 hint=0400 [ Computer ] (20) 02:13:57.079837 xid:cmd acff0841 > ffffffff S=6 s=0 (14) 02:13:57.179821 xid:cmd acff0841 > ffffffff S=6 s=1 (14) 02:13:57.279806 xid:cmd acff0841 > ffffffff S=6 s=2 (14) 02:13:57.379792 xid:cmd acff0841 > ffffffff S=6 s=3 (14) 02:13:57.458963 xid:rsp acff0841 < f29d0000 S=6 s=3 Nokia 8310 hint=b125 [ PnP Modem Fax Telephony IrCOMM IrOBEX ] (27) 02:13:57.479776 xid:cmd acff0841 > ffffffff S=6 s=4 (14) 02:13:57.579761 xid:cmd acff0841 > ffffffff S=6 s=5 (14) 02:13:57.679746 xid:cmd acff0841 > ffffffff S=6 s=* r5d5 hint=0400 [ Computer ] (20) 02:14:00.079388 xid:cmd acff0841 > ffffffff S=6 s=0 (14) 02:14:00.160512 xid:rsp acff0841 < f29d0000 S=6 s=0 Nokia 8310 hint=b125 [ PnP Modem Fax Telephony IrCOMM IrOBEX ] (27) 02:14:00.179366 xid:cmd acff0841 > ffffffff S=6 s=1 (14) 02:14:00.279351 xid:cmd acff0841 > ffffffff S=6 s=2 (14) 02:14:00.379335 xid:cmd acff0841 > ffffffff S=6 s=3 (14)

Soweit sogut! Nun geht’s daran, Ã¼ber’s Modem des Mobiltelephons mit ppp eine Verbindung ins Netz aufzubauen.

Hier die Konfigurationsskripts:
markus@r5d5:~ $ cat /etc/ppp/peers/gprs # Most GPRS phones don't reply to LCP echo's lcp-echo-failure 0 lcp-echo-internal 0


# Keep pppd attached to the terminal

nodetach
# Debug info

debug
show-password
# (Dis-)Connect scripts

connect "/usr/bin/wvdial --chat --config /etc/ppp/peers/gprs-wvdial.conf one"

disconnect /etc/ppp/peers/gprs-disconnect-chat
# IrDA serial device and speed

/dev/ircomm0

115200
# Disable hardware flow control

nocrtscts
# IP configuration

local

:10.0.0.1

noipdefault

ipcp-accept-local

usepeerdns
# ppp compression (disabled because the serial connection isn't the bottleneck in GPRS)

novj

nobsdcomp

novjccomp

nopcomp

noaccomp
# The phone is not required to authenticate:

noauth
# Username and password

# add your information to /etc/ppp/pap-secrets

# e.g. "web"   *   "web"   *

user "web"
markus@r5d5:~ $ cat /etc/ppp/peers/gprs-wvdial.conf

[Dialer one]

Init1 = ATH

Init2 = ATE1

Init3 = AT+CGDCONT=1,"IP","web.one.at"

Dial Command = ATD

Phone = *99#

Username = web

Password = web
markus@r5d5:~ $ cat /etc/ppp/peers/gprs-disconnect-chat

#!/bin/sh

exec /usr/sbin/chat -V -s -S

ABORT           "BUSY"

ABORT           "ERROR"

ABORT           "NO DIALTONE"

SAY             "nSending break to the modemn"

""              "K"

""              "K"

""              "K"

""              "+++ATH"

""              "+++ATH"

""              "+++ATH"

SAY             "nPDP context detachedn"

Fertig! Ein kurzer Test zeigt, dass alles funktioniert:
markus@r5d5:~ $ sudo pppd call gprs --> WvDial: Internet dialer version 1.54.0 --> Initializing modem. --> Sending: ATH ATH OK --> Sending: ATE1 ATE1 OK --> Sending: AT+CGDCONT=1,"IP","web.one.at" AT+CGDCONT=1,"IP","web.one.at" OK --> Modem initialized. --> Sending: ATD*99# --> Waiting for carrier. ATD*99# CONNECT ~[7f]}#@!}!} } }2}#}$@#}!}$}%}"}&} }*} } g}%~ --> Carrier detected. Waiting for prompt. ~[7f]}#@!}!} } }2}#}$@#}!}$}%}"}&} }*} } g}%~ --> PPP negotiation detected. Serial connection established. using channel 3 Using interface ppp0 Connect: ppp0 < --> /dev/ircomm0 sent [LCP ConfReq id=0x1 ] rcvd [LCP ConfRej id=0x1 ] sent [LCP ConfReq id=0x2 ] rcvd [LCP ConfAck id=0x2 ] sent [LCP ConfReq id=0x2 ] rcvd [LCP ConfReq id=0x0 ] sent [LCP ConfAck id=0x0 ] rcvd [LCP ConfAck id=0x2 ] sent [PAP AuthReq id=0x1 user="web" password="web"] rcvd [PAP AuthAck id=0x1 ""] PAP authentication succeeded sent [CCP ConfReq id=0x1 ] sent [IPCP ConfReq id=0x1 ] rcvd [IPCP ConfReq id=0x0 ] sent [IPCP ConfNak id=0x0 ] rcvd [LCP ProtRej id=0x0 80 fd 01 01 00 0c 1a 04 78 00 18 04 78 00] rcvd [IPCP ConfNak id=0x1 ] sent [IPCP ConfReq id=0x2 ] rcvd [IPCP ConfReq id=0x1 ] sent [IPCP ConfAck id=0x1 ] rcvd [IPCP ConfAck id=0x2 ] not replacing default route to eth0 [192.168.0.1] Cannot determine ethernet address for proxy ARP local IP address 10.100.186.77 remote IP address 10.0.0.1 primary DNS address 194.24.128.100 secondary DNS address 194.24.128.102 Script /etc/ppp/ip-up started (pid 17444) Script /etc/ppp/ip-up finished (pid 17444), status = 0x0

Nachdem auf meinem Rechner eine default Route auf eth0 eingestellt war, musste ich diese nur noch lÃ¶schen und eine Neue setzten, um meinen Browser nun endlich per Handy ins Netz zu bringen.
markus@r5d5:~ $ sudo route del default markus@r5d5:~ $ sudo route add default ppp0

Das Ganze ist mit Sicherheit noch nicht perfekt. FÃ¼r VerbesserungsvorschlÃ¤ge bin ich also sehr dankbar!