Melihat Status Network di Ubuntu 17.04


Kita bisa menggunakan perintah berikut untuk melihat semua perangkat jaringan yang ada di linux operating system:
ip command – ini digunakan untuk menampilkan atau merubah routing, device, policy routing dan tunnels.
netstat command – network connections, routing tables, interface statistics, masquerade connections, dan multicast memberships.
ifconfig command – digunakan untuk menmpilkan atau melakukan konfigurasi network interface.

1. Melihat network interface dengan ip command

Ketik perintah berikut:

ip link show

Output:

1: lo:  mtu 16436 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0:  mtu 1500 qdisc mq state UP qlen 1000
    link/ether b8:ac:6f:65:31:e5 brd ff:ff:ff:ff:ff:ff
3: wlan0:  mtu 1500 qdisc mq state DOWN qlen 1000
    link/ether 00:21:6a:ca:9b:10 brd ff:ff:ff:ff:ff:ff
4: vboxnet0:  mtu 1500 qdisc noop state DOWN qlen 1000
    link/ether 0a:00:27:00:00:00 brd ff:ff:ff:ff:ff:ff
5: pan0:  mtu 1500 qdisc noop state DOWN
    link/ether c2:10:fa:55:8e:32 brd ff:ff:ff:ff:ff:ff
6: vmnet1:  mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000
    link/ether 00:50:56:c0:00:01 brd ff:ff:ff:ff:ff:ff
7: vmnet8:  mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000
    link/ether 00:50:56:c0:00:08 brd ff:ff:ff:ff:ff:ff
11: ppp0:  mtu 1496 qdisc pfifo_fast state UNKNOWN qlen 3
    link/ppp

Maksudnya adalah:
lo – Loopback interface.
eth0 – Ethernet network interface yang pertama.
wlan0 – Wireless network interface yang pertama.
ppp0 – Point to Point Protocol network interface yang pertama yang dapat digunakan untuk dial up modem, PPTP vpn connection, atau 3G wireless USB modem.
vboxnet0, vmnet1, vmnet8 – Virtual machine interface working pada bridge mode atau NAT mode.

2. Menampilkan semua Network Interfaces menggunakan netstat Command

netstat -i

Output:

Kernel Interface table
Iface   MTU Met   RX-OK RX-ERR RX-DRP RX-OVR    TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0       1500 0   2697347      0      0 0       2630262      0      0      0 BMRU
lo        16436 0      2840      0      0 0          2840      0      0      0 LRU
ppp0       1496 0    102800      0      0 0         63437      0      0      0 MOPRU
vmnet1     1500 0         0      0      0 0            49      0      0      0 BMRU
vmnet8     1500 0         0      0      0 0            49      0      0      0 BMRU

3. Menggunakan ifocnfig command

/sbin/ifconfig -a

Output:
eth0      Link encap:Ethernet  HWaddr b8:ac:6f:65:31:e5 
          inet addr:192.168.2.100  Bcast:192.168.2.255  Mask:255.255.255.0
          inet6 addr: fe80::baac:6fff:fe65:31e5/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2697529 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2630541 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:2159382827 (2.0 GiB)  TX bytes:1389552776 (1.2 GiB)
          Interrupt:17

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:2849 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2849 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2778290 (2.6 MiB)  TX bytes:2778290 (2.6 MiB)

ppp0      Link encap:Point-to-Point Protocol 
          inet addr:10.1.3.105  P-t-P:10.0.31.18  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1496  Metric:1
          RX packets:102800 errors:0 dropped:0 overruns:0 frame:0
          TX packets:63437 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3
          RX bytes:148532544 (141.6 MiB)  TX bytes:4425518 (4.2 MiB)

vmnet1    Link encap:Ethernet  HWaddr 00:50:56:c0:00:01 
          inet addr:192.168.47.1  Bcast:192.168.47.255  Mask:255.255.255.0
          inet6 addr: fe80::250:56ff:fec0:1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:49 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

vmnet8    Link encap:Ethernet  HWaddr 00:50:56:c0:00:08 
          inet addr:172.16.232.1  Bcast:172.16.232.255  Mask:255.255.255.0
          inet6 addr: fe80::250:56ff:fec0:8/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:49 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

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