服务器评测
Ubuntu下组建面向如果家里已经有一台台式机上网，那么用蓝牙组建无线网络可以作为wifi之外的另一选择。
在linux下对于蓝牙PAN（personal area network)的构件是非常简单的
假定你有两快蓝牙适配器
地址分别是:
11:22:33:44:55:66 host
66:55:44:22:22:11 client
========================================================================
对于host（也就是你连接外网的台式机）
修改/etc/default/bluetooth
############ PAND
#
# Run pand — ethernet: creates new network interfaces bnep<N>
# that can be configured in /etc/network/interfaces
# set to 1 for enabled, 0 for disabled
PAND_ENABLED=1
# Arguments to pand
# Read the PAN howto for ways to set this up
# http://bluez.sourceforge.net/contrib/HOWTO-PAN
PAND_OPTIONS=”–listen –master –role NAP”
配置host蓝牙适配器ip
修改/etc/network/interfaces
添加
auto bnep0
iface bnep0 inet static
address 192.168.128.1
netmask 255.255.255.0
重启蓝牙服务
sudo /etc/init.d/bluetooth restart
配置网络nat
sudo -s
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
===================================================================
对于client就很简单了
直接修改
修改/etc/default/bluetooth
############ PAND
#
# Run pand — ethernet: creates new network interfaces bnep<N>
# that can be configured in /etc/network/interfaces
# set to 1 for enabled, 0 for disabled
PAND_ENABLED=1
# Arguments to pand
# Read the PAN howto for ways to set this up
# http://bluez.sourceforge.net/contrib/HOWTO-PAN
PAND_OPTIONS=”–role PANU –connect 11:22:33:44:55:66″
配置client蓝牙适配器ip
修改/etc/network/interfaces
添加
auto bnep0
iface bnep0 inet static
address 192.168.128.10
netmask 255.255.255.0
gateway 192.168.128.1
重启蓝牙服务
sudo /etc/init.d/bluetooth restart
你就可以通过蓝牙上网了，以上在Ubuntu 6.10下测试通过
注意蓝牙适配器建议买2.0标准理论速度可以达到3Mbps，实际速度在100k左右，基本满足要求蓝牙的无线网网络
