VirtualBox 리눅스 인터넷 연결

해결되지 않은 문제입니다.

VirtualBox Linux Internet Connection
VirtualBox 리눅스 인터넷 연결

1 확인

[root@localhost ~]# ping 8.8.8.8
connect: Network is unreachable

→ 인터넷상 IP인 8.8.8.8로 접근이 되지 않는다. 인터넷과 연결되지 않았기 때문이다.

[root@localhost ~]# ifconfig
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:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

→ lo 밖에 보이지 않는다.

[root@localhost ~]# ifconfig -a
eth0      Link encap:Ethernet  HWaddr 08:00:27:F8:4A:51
          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)

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:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

→ -a 옵션을 주어 실행하니, eth0은 있는데 UP 상태가 아니다.

[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE="eth0"
BOOTPROTO="dhcp"
HWADDR="08:00:27:F8:4A:51" 
NM_CONTROLLED="yes"
ONBOOT="no"
TYPE="Ethernet"
UUID="123d4fbd-e5c6-4732-a723-6210af2738ea"

→ eth0 설명을 보니 문제없어 보인다. eth0만 시작하면 될 것 같다.

2 eth0 시작

[root@localhost ~]# ifup eth0

Determining IP information for eth0... done.

[root@localhost ~]# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 08:00:27:F8:4A:51
          inet addr:10.0.2.15  Bcast:10.0.2.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fefd:beb3/64 Scope:Link
          UP BROADCAST RUNING MULTICAST  MTU:1500  Metric:1
          RX packets:2 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1180 (1.1 KiB)  TX bytes:1236 (1.2 KiB)

3 테스트

[root@localhost ~]# ping 8.8.8.8 -c2
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_req=13 ttl=29 time=323 ms
64 bytes from 8.8.8.8: icmp_req=14 ttl=29 time=339 ms

--- 8.8.8.8 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1447ms
rtt min/avg/max/mdev = 323.499/331.351/339.204/7.873 ms

→ 인터넷과 연결이 되었다.

[root@localhost ~]# ping google.com -c2
PING google.com (74.125.142.102) 56(84) bytes of data.
64 bytes from ie-in-f102.1e100.net (74.125.142.10): icmp_req=1 ttl=43 time=234 ms
64 bytes from ie-in-f102.1e100.net (74.125.142.10): icmp_req=2 ttl=43 time=215 ms

--- google.com ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1374ms
rtt min/avg/max/mdev = 215.349/224.783/234.218/9.446 ms

→ 도메인으로도 잘 된다. 즉 DNS도 잘 연결되고 있다.

4 같이 보기