Ubuntu18.04 修改IP地址、查看网关、防火墙

1. Ubuntu18.04 修改IP地址

修改 sudo vim /etc/netplan/50-cloud-init.yaml文件

# This file is generated from information provided by
# the datasource.  Changes to it will not persist across an instance.
# To disable cloud-init's network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
network:
    ethernets:
        enp0s3:
            addresses: [192.168.33.34/24]
            gateway4: 192.168.33.1
            dhcp4: no
    version: 2
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运行sudo netplan apply使配置生效，通过ifconfig 查看ip是否配置成功

2. 查看网关

route -n
netstat -r
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3. 防火墙开启/关闭

ufw enable
ufw disable
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