1 Linux机器IP地址的配置

2 ping ip地址的问题解决  1) Linux的ip 网段  网关  2) 虚拟交换机 3)  windows中的网络配置   4) 防火墙

1 网络服务

ip addr  查看ip地址

1: lo: 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: mtu 1500 qdisc pfifo_fast state UP group default qlen 1000

link/ether 00:0c:29:1a:00:ff brd ff:ff:ff:ff:ff:ff

inet 192.168.133.201/24 brd 192.168.133.255 scope global noprefixroute ens33

valid_lft forever preferred_lft forever

inet6 fe80::ed42:d3b0:28e0:5359/64 scope link noprefixroute

valid_lft forever preferred_lft forever

service  network restart   重启网络服务

[root@localhost ~]# service network restart

Restarting network (via systemctl):                        [  OK  ]

service  network status   查看网络状态

service  network stop      停止网络服务

service  network start      启动网络服务

2 防火墙

systemctl status  firewalld

[root@localhost ~]# systemctl status  firewalld

● firewalld.service - firewalld - dynamic firewall daemon

Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)

Active: active (running) since Fri 2020-07-03 09:06:55 CST; 5h 35min ago

Docs: man:firewalld(1)

Main PID: 731 (firewalld)

CGroup: /system.slice/firewalld.service

└─731 /usr/bin/python2 -Es /usr/sbin/firewalld --nofork --nopid

Jul 03 09:06:51 localhost.localdomain systemd[1]: Starting firewalld - dynamic firewa....

Jul 03 09:06:55 localhost.localdomain systemd[1]: Started firewalld - dynamic firewal....

Hint: Some lines were ellipsized, use -l to show in full.

systemctl  stop  firewalld

systemctl  start  firewalld

上面的两个命令  start  | stop 临时生效 disable和enable命令是配置防火墙开机的时候启动或者是禁用

[root@localhost ~]# systemctldisablefirewalld       禁用

Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.

Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.

[root@localhost ~]# systemctlenablefirewalld    启动

Created symlink from /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service to /usr/lib/systemd/system/firewalld.service.

Created symlink from /etc/systemd/system/multi-user.target.wants/firewalld.service to /usr/lib/systemd/system/firewalld.service.

禁用防火墙以后重启查看防火墙的状态

[root@localhost ~]# systemctl status  firewalld

● firewalld.service - firewalld - dynamic firewall daemon

Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)

Active: inactive (dead)

Docs: man:firewalld(1)

3 网络端口查看

netstat  命令不可用  查看网络信息

yum -y install  net-tools  安装网络工具

netstat

查看系统中的某个端口是否被占用

netstat -nltp  | grep 22

n 数字

l 列表的形式展示

t  tcp 协议

p port

[root@localhost ~]# netstat -nltp | grep 22

tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 955/sshd

tcp6 0 0 :::22 :::* LISTEN 955/sshd

启动tomcat

1) 上传

2) 解压

3)  启动  bin>start-up.sh

netstat -nltp | grep  8080

[root@localhost bin]# netstat -nltp | grep 8080

tcp6 0 0 :::8080 :::* LISTEN 1592/java