solution with details and code in seed

Lab Environment

In this lab, we use three machines, one for client, one for server, and the other for proxy. We will use

containers for these machines. Their IP addresses are listed in the following:

client: $10\mathrm{.}9\mathrm{.}0\mathrm{.}5$

server: $10\mathrm{.}9\mathrm{.}0\mathrm{.}43$

proxy: $10\mathrm{.}9\mathrm{.}0\mathrm{.}143$

Container Setup and Commands. Please download the Labsetup.zip file to your VM from the lab$$s

website, unzip it$,$ enter the Labsetup folder, and use the docker$-$compose.yml file to set up the lab

environment. Detailed explanation of the content in this file and all the involved Dockerfile can be

found from the user manual, which is linked to the website of this lab. If this is the first time you set up a

SEED lab environment using containers, it is very important that you read the user manual.

$ docker$-$compose build # Build the container image

$ docker$-$compose up # Start the container

$ docker$-$compose down # Shut down the container

$//$ Aliases for the Compose commands above

$ dcbuild # Alias for: docker$-$compose build

$ dcup # Alias for: docker$-$compose up

$ dcdown # Alias for: docker$-$compose down

All the containers will be running in the background. To run commands on a container, we often need

to get a shell on that container. We first need to use the "docker ps$"$ command to find out the ID of

the container, and then use "docker exec" to start a shell on that container. We have created aliases for

them in the $.$bashrc file.

$ dockps $//$ Alias for: docker ps $--$format $"\{\{.$ID$\}\}\{\{.$Names$\}\}"$

$ docksh $//$ Alias for: docker exec $-$it $/$bin$/$bash

$//$ The following example shows how to get a shell inside hostC

$ dockps

b$1004832$e$275$ hostA$-10\mathrm{.}9\mathrm{.}0\mathrm{.}5$

$0$af$4$ea$7$a$3$e$2$e hostB$-10\mathrm{.}9\mathrm{.}0\mathrm{.}6$

$9652715$c$8$e$0$a hostC$-10\mathrm{.}9\mathrm{.}0\mathrm{.}7$

$ docksh $96$

root@$9652715$c$8$e$0$a:$/$#

$//$ Note: If a docker command requires a container ID$,$ you do not need to

$//$ type the entire ID string. Typing the first few characters will

$//$ be sufficient, as long as they are unique among all the containers.