linux查看网络|查看端口|查看路由|查看ip
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目录
1、ping 测试目的主机是否连通
[root@localhost ~]# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=114 time=119 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=114 time=95.8 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=114 time=65.2 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=114 time=165 ms
^C
--- 8.8.8.8 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3026ms
rtt min/avg/max/mdev = 65.272/111.340/165.082/36.441 ms
2、 测试目的主机端口的联通性
【1】telnet
- 下面说明192.168.43.88的22端口开放
[root@localhost ~]# telnet 192.168.43.88 22
Trying 192.168.43.88...
Connected to 192.168.43.88.
Escape character is '^]'.
SSH-2.0-OpenSSH_7.4
- 下面说明192.168.43.88的8080端口不开放
[root@localhost ~]# telnet 192.168.43.88 8080
Trying 192.168.43.88...
telnet: connect to address 192.168.43.88: Connection refused
【2】ssh
- 下面说明192.168.43.88的22端口开放
[root@localhost ~]# ssh -v -p 22 192.168.43.88
OpenSSH_7.4p1, OpenSSL 1.0.2k-fips 26 Jan 2017
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 58: Applying options for *
debug1: Connecting to 192.168.43.88 [192.168.43.88] port 22.
debug1: Connection established.
- 下面说明192.168.43.88的8080端口不开放
[root@localhost ~]# ssh -v -p 8080 192.168.43.88
OpenSSH_7.4p1, OpenSSL 1.0.2k-fips 26 Jan 2017
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 58: Applying options for *
debug1: Connecting to 192.168.43.88 [192.168.43.88] port 8080.
debug1: connect to address 192.168.43.88 port 8080: Connection refused
ssh: connect to host 192.168.43.88 port 8080: Connection refused
【3】curl
- 下面说明192.168.43.88的22端口开放
[root@localhost ~]# curl 192.168.43.88:22
SSH-2.0-OpenSSH_7.4
Protocol mismatch.
curl: (56) Recv failure: Connection reset by peer- 下面说明192.168.43.88的8080端口不开放
[root@localhost ~]# curl 192.168.43.88:8080
curl: (7) Failed connect to 192.168.43.88:8080; Connection refused
【4】wget
- 下面说明192.168.43.88的22端口开放
[root@localhost ~]# wget 192.168.43.88:22
--2022-12-10 09:52:27-- http://192.168.43.88:22/
Connecting to 192.168.43.88:22... connected.
HTTP request sent, awaiting response... 200 No headers, assuming HTTP/0.9
Length: unspecified
Saving to: ‘index.html’- 下面说明192.168.43.88的8080端口不开放
[root@localhost ~]# wget 192.168.43.88:8080
--2022-12-10 09:54:51-- http://192.168.43.88:8080/
Connecting to 192.168.43.88:8080... failed: Connection refused.3、查看本机网络
【1】ifconfig
[root@localhost ~]# ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:bb:52:3e:b6 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.43.88 netmask 255.255.255.0 broadcast 192.168.43.255
inet6 2408:8427:b380:fda:1cd0:ead5:4694:a289 prefixlen 64 scopeid 0x0<global>
inet6 fe80::408a:6cf2:1f46:9da5 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:ba:b5:b6 txqueuelen 1000 (Ethernet)
RX packets 1951 bytes 744320 (726.8 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1455 bytes 139226 (135.9 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
【2】ip add
[root@localhost ~]# ip add
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default 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: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:ba:b5:b6 brd ff:ff:ff:ff:ff:ff
inet 192.168.43.88/24 brd 192.168.43.255 scope global noprefixroute ens33
valid_lft forever preferred_lft forever
inet6 2408:8427:b380:fda:1cd0:ead5:4694:a289/64 scope global noprefixroute dynamic
valid_lft 3529sec preferred_lft 3529sec
inet6 fe80::408a:6cf2:1f46:9da5/64 scope link noprefixroute
valid_lft forever preferred_lft forever
【3】hostname -I
[root@localhost ~]# hostname -I
192.168.43.88 172.17.0.1 2408:8427:b380:fda:1cd0:ead5:4694:a289 4、查看路由
【1】netstat -rn
[root@localhost ~]# netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
0.0.0.0 192.168.43.1 0.0.0.0 UG 0 0 0 ens33
172.17.0.0 0.0.0.0 255.255.0.0 U 0 0 0 docker0
192.168.43.0 0.0.0.0 255.255.255.0 U 0 0 0 ens33
【2】route -n
[root@localhost ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.43.1 0.0.0.0 UG 100 0 0 ens33
172.17.0.0 0.0.0.0 255.255.0.0 U 0 0 0 docker0
192.168.43.0 0.0.0.0 255.255.255.0 U 100 0 0 ens33
【3】ip route
[root@localhost ~]# ip route
default via 192.168.43.1 dev ens33 proto static metric 100
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1
192.168.43.0/24 dev ens33 proto kernel scope link src 192.168.43.88 metric 100