리눅스/ALPINE 리눅스
알파인리눅스 : IP 명령어
큰세상2000
2022. 2. 20. 23:33
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By chatGPT
■ ( user ) 네트워크 링크 상태 ( = ip l )
ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:e0:4c:61:23:08 brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether b4:2e:99:c1:ef:dd brd ff:ff:ff:ff:ff:ff
4: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
link/ether 02:42:e1:c1:45:72 brd ff:ff:ff:ff:ff:ff
6: vethb6cd03c@if5: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue
master docker0 state UP
link/ether 26:38:d9:61:71:44 brd ff:ff:ff:ff:ff:ff
■ ( user ) 라우팅 테이블 보기 ( = ip r )
ip route
default via 192.168.219.1 dev eth1 metric 1
default via 192.168.219.1 dev eth0 metric 202
172.17.0.0/16 dev docker0 scope link src 172.17.0.1
192.168.219.0/24 dev eth0 scope link src 192.168.219.3
192.168.219.0/24 dev eth1 scope link src 192.168.219.241
■ ( user ) 이웃한 객체 ( = ip n )
ip neigh
192.168.219.112 dev eth0 lladdr 40:8d:1c:b3:c1:f6 ref 1 used 0/0/0 probes 0 REACHABLE
192.168.219.1 dev eth0 lladdr 00:32:63:22:8e:a5 used 0/0/0 probes 0 STALE
192.168.219.1 dev eth1 lladdr 00:72:c3:r2:8e:a5 used 0/0/0 probes 1 STALE
■ ( user ) IP 주소 정보 ( = ip a )
ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 9a:b4:22:c4:46:a7 brd ff:ff:ff:ff:ff:ff
inet 192.168.219.16/24 scope global eth0
valid_lft forever preferred_lft forever
inet6 fc80::94b4:21ff:fdc2:42a7/64 scope link
valid_lft forever preferred_lft forever
■ ( user ) 터널링 인터페이스
ip tunnel
mytunnel: ip/ip remote 203.0.113.1 local 192.168.1.1 ttl 255
■ ( user ) 패킷 필터링 규칙
ip rule
0: from all lookup local
32766: from all lookup main
32767: from all lookup default
■ ( user ) 전통적인 유닉스/리눅스 시스템에서 사용되던 명령어
ifconfig
eth0 Link encap:Ethernet HWaddr 9c:14:30:42:34:b7
inet addr:192.168.219.16 Bcast:0.0.0.0 Mask:255.255.255.0
inet6 addr: fe80::98b4:20ff:fec2:44a7/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:94789 errors:0 dropped:10 overruns:0 frame:0
TX packets:1510 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:9915330 (9.4 MiB) TX bytes:195788 (191.1 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:65536 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)
■ ( user ) 네트워크 정보
netstat
Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 240 192.168.219.241:ssh 192.168.219.112:14182 ESTABLISHED
Active UNIX domain sockets (w/o servers)
Proto RefCnt Flags Type State I-Node Path
unix 2 [ ] DGRAM 5420 /var/run/chrony/chronyd.sock
unix 4 [ ] DGRAM 6706 /dev/log
unix 2 [ ] DGRAM 11857 @00001
unix 3 [ ] STREAM CONNECTED 3478
netstat -tuln
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 :::22 :::* LISTEN
t : TCP 연결
u : UDP 연결
l : 수신 대기 중인 소켓
n : 주소와 포트를 숫자로 표시
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