Linux访问外网，有图和命令，简单易懂

这里介绍一下Linux利用桥连模式访问外网1、首先右键虚拟机，然后点击设置2、选择网络适配器，然后在右边的网络连接中选择桥连模式，然后点击确定3、查看默认配置[root@localhost Desktop]# ifconfigeth0Link encap:EthernetHWaddr 00:0C:29:22:7E:B1inet addr:192.168.1.183Bcast:192.168.1.2

牧歌ing

4091人浏览 · 2021-05-21 14:34:23

牧歌ing · 2021-05-21 14:34:23 发布

这里介绍一下Linux利用桥连模式访问外网

1、首先右键虚拟机，然后点击设置

在这里插入图片描述

2、选择网络适配器，然后在右边的网络连接中选择桥连模式，然后点击确定

在这里插入图片描述

3、查看默认配置

[root@localhost Desktop]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:0C:29:22:7E:B1  
          inet addr:192.168.1.183  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fe22:7eb1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:290 errors:0 dropped:0 overruns:0 frame:0
          TX packets:169 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:24673 (24.0 KiB)  TX bytes:25826 (25.2 KiB)

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:16436  Metric:1
          RX packets:13 errors:0 dropped:0 overruns:0 frame:0
          TX packets:13 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:820 (820.0 b)  TX bytes:820 (820.0 b)

[root@localhost Desktop]#

4、默认配置中的网络设备名是 eth0，然后我们在配置路径下找到了ifcfg-eth0

[root@localhost Desktop]# ls /etc/sysconfig/network-scripts
ifcfg-eth0   ifdown-isdn    ifup-aliases  ifup-plusb     init.ipv6-global
ifcfg-lo     ifdown-post    ifup-bnep     ifup-post      net.hotplug
ifdown       ifdown-ppp     ifup-eth      ifup-ppp       network-functions
ifdown-bnep  ifdown-routes  ifup-ippp     ifup-routes    network-functions-ipv6
ifdown-eth   ifdown-sit     ifup-ipv6     ifup-sit
ifdown-ippp  ifdown-tunnel  ifup-isdn     ifup-tunnel
ifdown-ipv6  ifup           ifup-plip     ifup-wireless
[root@localhost Desktop]#

5、编辑这个配置文件，然后保存（英文状态下按:wq），下面这个配置文件可以拿来用，需要修改的地方有

物理地址：HWADDR="00:0C:29:22:7E:B1" 符合物理地址格式就行
IP：IPADDR=192.168.1.205 配成和你主机IP同网段的就行
网关：GATEWAY=192.168.1.1 配成和你主机网关一样就行

[root@localhost Desktop]# vi /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE="eth0"
BOOTPROTO="none"
HWADDR="00:0C:29:22:7E:B1"
IPV6INIT="yes"
NM_CONTROLLED="yes"
ONBOOT="yes"
TYPE="Ethernet"
UUID="371238cf-08c4-4de6-a00b-d2fa79d2615d
IPADDR=192.168.1.205
PREFIX=24
GATEWAY=192.168.1.1
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
NAME="System eth0"
DNS1=223.6.6.6
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
LAST_CONNECT=1558551293

6、重启网卡

[root@localhost Desktop]# service network restart
Shutting down interface eth0:  Device state: 3 (disconnected)
                                                           [  OK  ]
Shutting down loopback interface:                          [  OK  ]
Bringing up loopback interface:                            [  OK  ]
Bringing up interface eth0:  Active connection state: activating
Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/10
state: activated
Connection activated
                                                           [  OK  ]

7、查看是否可以连接外网

[root@localhost Desktop]# ping baidu.com
PING baidu.com (39.156.69.79) 56(84) bytes of data.
64 bytes from 39.156.69.79: icmp_seq=1 ttl=50 time=27.0 ms
64 bytes from 39.156.69.79: icmp_seq=2 ttl=50 time=27.0 ms
64 bytes from 39.156.69.79: icmp_seq=3 ttl=50 time=26.9 ms
64 bytes from 39.156.69.79: icmp_seq=4 ttl=50 time=27.0 ms
64 bytes from 39.156.69.79: icmp_seq=5 ttl=50 time=27.0 ms
64 bytes from 39.156.69.79: icmp_seq=6 ttl=50 time=26.9 ms
64 bytes from 39.156.69.79: icmp_seq=7 ttl=50 time=27.2 ms