VPC nat (Sant, nant) experiment

Mission ：

Task a ： Build and use VPCs on Alibaba cloud VPC
  name ：VPC experiment
  The Internet ：192.168.0.0/16

  Task 2 ： stay VPC Create two switches in
  Switch 1：192.168.1.0/24
  Switch 2：192.168.2.0/24

  Task three ： Create in the VPC ECS example
  On the switch 1 And switches 2 Internal creation ECSA and ECSB
  
  Task 4 ： Purchase elastic public network IP

  Task five ： establish NAT gateway , Bind the purchased elastic public network IP
  To configure SNAT The rules , Proxy switch 1 And switches 2 Two network segments go online
 
  Task six ：ECSA Configure the eight dimension service
  install httpd, And prepare web page , Set up httpd Boot up
  Configure security groups , Add rules , release 80 port .

  Task seven ： To configure DNAT The rules , Make Internet users pass the public network IP Of 80 Port to access ECSA Of web service .

Build a VPC in the VPC

 

Create two switches of different network segments in the switch interface

Create in the switch ECS example （ You can also create keys directly （ Availability zone ） Then bind the specified switch ）

Buy EIP

Directly enter the purchase interface to purchase

Create a gateway binding EIP

Pay attention to the public network nat

 

  When created, the binding already exists EIP

To configure SNAT and DNAT

SANT

 

Finish here ECS With internet access

 DNAT

  To configure web service

yum Package service

systemctl enable httpd.server Boot from boot

Access the public network from the outside ip Access to the ECS1