Belkin PF31 Specifikace stáhnout pdf (Strana 34)

Basic Configuration and Operation

205

You may want to adjust the last two entries in the configuration to suit your

setup: the

ms-dns line specifies the IP address of your DNS server. This will

become useful when you enable routing. The two colon-separated addresses

are the local IP address and the IP address to give the remote device. You

should choose addresses in the 10.x.x.x or 192.168.x.x ranges that don’t

clash with any of your internal subnets.

The dund program can then be invoked with

dund --listen --persist call

dun

. When a remote device connects, the PPP connection is brought up.

Because of the “debug” option to pppd, you should see a verbose report of the

connection in the system log. To confirm that a connection has been estab-

lished, run the ifconfig command and look for the

ppp0 network interface.

Invoke the ping command to confirm that your remote device is reachable:

$ ping 192.168.7.2

PING 192.168.7.2 (192.168.7.2): 56 data bytes

64 bytes from 192.168.7.2: icmp_seq=0 ttl=255 time=77.8 ms

64 bytes from 192.168.7.2: icmp_seq=1 ttl=255 time=80.5 ms

64 bytes from 192.168.7.2: icmp_seq=2 ttl=255 time=78.3 ms

The final step is to ensure that your Linux box can route for the remote

device, so it can take advantage of your network facilities. Various Linux dis-

tributions have their own way of doing this in their network configuration,

but to test you can enable it by issuing the command

echo 1 > /proc/sys/

net/ipv4/ip_forward

. Further instructions on routing can be found on the

iptables home page (http://www.netfilter.org) and also in “Sharing a Net-

work Connection over IrDA” in Chapter 8. There are a few ways to set up

this kind of routing, depending on your distribution and kernel version, but

make sure that other machines on your network know how to route to your

connected Bluetooth device.

If you are connecting to a device running Microsoft soft-

ware, you should pass the

--ms-dun option to dund. This

enables the extra negotiation required to talk to the Win-

dows dial-up networking implementation.

crtscts

lock

local

proxyarp

ms-dns 192.168.0.5

# local : remote

192.168.7.1:192.168.7.2

Example 7-7. PPP daemon configuration for LAN access (continued)

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 45 46

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