How to set static IP in centOS7 NET mode

Preface

NAT forwarding: Simply put, NAT is the use of internal addresses in the internal network of the LAN. When the internal node wants to communicate with the external network, the internal address is replaced with a public address at the gateway (which can be understood as the exit, like the door of the yard) so that it can be used normally on the external public network (the Internet). NAT allows multiple computers to share an Internet connection. This function solves the problem of shortage of public IP addresses very well. Through this method, you can apply for only one legal IP address to connect all computers in the LAN to the Internet. At this time, NAT shields the internal network, and all internal network computers are invisible to the public network, while internal network computer users are usually unaware of the existence of NAT. As shown in the figure below. The internal address mentioned here refers to the private IP address assigned to the node in the internal network. This address can only be used in the internal network and cannot be routed.

Check static IP and subnet mask

Click Edit-Virtual Network Editor

Click DHCP Settings

Static IP Yes

One between 192.168.230.128-192.168.230.254

Then we modify the IP definition 192.168.230.129

View Gateway

Then we also record the gateway address 192.168.191.2

Step 1: Enter the /etc/sysconfig/network-scripts/ directory

Step 2: Modify the ifcfg-eth(xxx) file

vim ifcfg-eth0 

The properties that need to be modified are:
ONBOOT=YES #Change no to yes
BOOTPROTO=static #Change dhcp to static
Add to:
IPADDR=192.168.191.129 #static ip address
GATEWAY=192.168.230.1 #Default gateway
NETMASK=255.255.255.0 #Subnet mask

Step 3: Restart the network

service network restart

TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
IPADDR=192.168.191.129
GATEWAY=192.168.191.2
NETMASK=255.255.255.0
DNS1=8.8.8.8
UUID=6d7d57bc-db00-454d-b66e-40f65bc163ee
DEVICE=ens33
ONBOOT=yes

Turn off firewall

Test ping external network

Finally, 192.168.191.129 is the IP address of the virtual machine.

Summarize

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