Using wvdial in linux to implement gprs dial-up Internet access

1. Install wvdial

Sudo apt-get install wvdial

2. Write the configuration information of wvdial in/etc/wvdial. conf: femacs/etc/wvdial. conf.

Init1 = ATZ

Init2 = ATQ0 V1 E1 S0 = 0 & C1 & D2 + FCLASS = 0

Init3 = AT + CGDCONT = 1, "IP", "CMNET" # important! Otherwise, DNS cannot be used.

Modem Type = Analog Modem

Baud = 115200 # Set Based on your gprs modem

New PPPD = yes

Modem =/dev/ttyS0 # Your connected serial port

ISDN = 0

Phone = * 99 *** 1 ### China Mobile's dial-up number

Password = *** # It is useless.

Username = itlanger

In this step, you can run wvdial first, then the modem cannot be found, and then modify/etc/wvdial. conf to add

Baud = 115200 # Set Based on your gprs modem

Modem =/dev/ttyS0 # Your connected serial port

Run wvdial again, and then manually add the content to/etc/wvdial. conf:

Init3 = AT + CGDCONT = 1, "IP", "CMNET"

Phone = * 99 *** 1 ### China Mobile's dial-up number

Password = *** # It is useless.

Username = itlanger

Here Init3 = AT + CGDCONT = 1, "IP", "CMNET" must be added, otherwise wvdial will appear:

Warning, can't find address for 'www .suse.de'

--> Warning, address lookup does not work

--> Nameserver (DNS) failure, the connection may not work.

As a result, only IP addresses can be pinged and domain names cannot be pinged.

3. Configure the ppp parameter: femacs/etc/ppp/options

Noipdefault

Ipcp-accept-local

Ipcp-accept-remote

Defaultroute

Noauth

Crtscts

Debug

4. dial-up Internet access: sudo wvdial

--> WvDial: Internet dialer version 1.60

--> Initializing modem.

--> Sending: ATZ

ATZ

OK

--> Sending: ATQ0 V1 E1 S0 = 0 & C1 & D2 + FCLASS = 0

ATQ0 V1 E1 S0 = 0 & C1 & D2 + FCLASS = 0

OK

--> Sending: AT + CGDCONT = 1, "IP", "CMNET"

AT + CGDCONT = 1, "IP", "CMNET"

OK

--> Modem initialized.

--> Sending: ATDT * 99 *** 1 #

--> Waiting for carrier.

ATDT * 99 *** 1 #

CONNECT

~ [7f] }#@!} #}} 9} "}&}}}}}'}"} (} "}%}& K _ {}# }#}% B #}% <e ~

--> Carrier detected. Waiting for prompt.

~ [7f] }#@!} #}} 9} "}&}}}}}'}"} (} "}%}& K _ {}# }#}% B #}% <e ~

--> PPP negotiation detected.

--> Starting pppd at Tue Dec 15 11:19:14 2009

--> Pid of pppd: 6666

--> Using interface ppp0

--> Authentication (CHAP) started

--> Authentication (CHAP) successful

--> Local IP address 10.24.229.233

--> Remote IP address 192.168.254.254

--> Primary DNS address 211.137.160.5

--> Secondary DNS address 211.136.17.107

--> Script/etc/ppp/ip-up run successful

--> Default route OK.

--> Nameserver (DNS) OK.

--> Connected... Press Ctrl-C to disconnect

4. Disconnect the Ethernet:

Sudo ifconfig eth0 down

Sudo route add default gw 10.24.229.233 # Here is the IP address of ppp0

5. Test network:

Ping 60.28.166.84

Ping www.chinaunix.net

If the domain name cannot be pinged, You Can cat/etc/resolv. conf

Then write the DNS obtained by dialing