linux 网络连接

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在摆脱虚拟机的束缚后，当务之急就是连接网络，与外界取得联系（不然，Tux又想回虚拟世界了）环境：ubuntu 15.04

在虚拟机中：
VM虚拟机联网，最简单的方法：虚拟网络设置成NAT
网络连接Enable Networking——Auto Ethernet
物理机上：
终端宽带链接：edemon@linux:~$ sudo pppoeconf[sudo] password for edemon: #输入自己的用户名（先删除username）和密码，然后一路yes，直到看见Plugin rp-pppoe.so loaded.启用宽带链接：edemon@linux:~$ sudo pon dsl-providerPlugin rp-pppoe.so loaded.断开链接：sudo poff dsl-provider

点击图形界面的DSL连接，有可能上面显示什么也没有连上，不要紧张，只要保证终端宽带设置的步骤没有问题，那么我们是可以上网的

事实上，我们连接的应该是eth0

所以，以后直接连接eth0

局域网：编辑有线链接——Wired connection1办公室内的有线网络，Ethernet设置，依据静态分配IP或是动态，IPv4相应设置手动填写地址或者自动确定。查看自己的网络接口：edemon@linux:~$ sudo ifconfig[sudo] password for edemon: eth0      Link encap:Ethernet  HWaddr 18:67:b0:24:0a:2e            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1          RX packets:1604 errors:0 dropped:1225 overruns:0 frame:0          TX packets:358 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:1000           RX bytes:123708 (123.7 KB)  TX bytes:26501 (26.5 KB)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:65536  Metric:1          RX packets:1023 errors:0 dropped:0 overruns:0 frame:0          TX packets:1023 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:0           RX bytes:85957 (85.9 KB)  TX bytes:85957 (85.9 KB)ppp0      Link encap:Point-to-Point Protocol            inet addr:100.64.26.59  P-t-P:100.64.0.1  Mask:255.255.255.255          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1492  Metric:1          RX packets:15 errors:0 dropped:0 overruns:0 frame:0          TX packets:15 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:3           RX bytes:1702 (1.7 KB)  TX bytes:906 (906.0 B)ppp1      Link encap:Point-to-Point Protocol            inet addr:100.64.5.172  P-t-P:100.64.0.1  Mask:255.255.255.255          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1492  Metric:1          RX packets:17 errors:0 dropped:0 overruns:0 frame:0          TX packets:18 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:3           RX bytes:2338 (2.3 KB)  TX bytes:1092 (1.0 KB)wlan0     Link encap:Ethernet  HWaddr c8:f7:33:95:46:1a            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)

启用或关闭网卡：turn up eth0 network:sudo ifconfig eth0 upturn off eth0:sudo ifconfig eth0 down查看所有的网关：edemon@linux:~$ netstat -rKernel IP routing tableDestination     Gateway         Genmask         Flags   MSS Window  irtt Ifacedefault         *               0.0.0.0         U         0 0          0 ppp1100.64.0.1      *               255.255.255.255 UH        0 0          0 ppp0100.64.0.1      *               255.255.255.255 UH        0 0          0 ppp1link-local      *               255.255.0.0     U         0 0          0 ppp0????????????????????????????????????????????????????????????????????????????edemon@linux:~$ ip addr show ppp029: ppp0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1492 qdisc pfifo_fast state UNKNOWN group default qlen 3    link/ppp     inet 100.64.6.54 peer 100.64.0.1/32 scope global ppp0       valid_lft forever preferred_lft forever    inet 100.64.6.54/32 brd 100.64.6.54 scope global ppp0       valid_lft forever preferred_lft forever

自己设置无线网络，简单的方法是用图形界面的Enable Wi-fi —— create new Wifi network



不过在此有一个奇怪的现象，自己创建的WIFI，电脑可以搜到并连接，但是Android手机根本扫描不到，关注中。。。

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