Detailed explanation of AWS free server application and network proxy setup tutorial

Precautions

1. There is a 40GB data limit per month, and charges will be incurred if you exceed the limit. (Pay attention to the email reminder related to activation fees)
2. There is a 750-hour limit each month, but in fact the maximum number of hours in a month is 744, so you can ignore the time warning email.
3. Most of the IPs are blocked by Google Scholar, so you need to keep trying to change nodes (depending on your luck).
4. After the one-year free service expires, you can log out of the server and register with a different email address to continue using it for free. (Specific circumstances are subject to the latest free policy of AWS)

Necessary conditions

1. Credit card (domestic credit card is also acceptable, no visa required)
2. A temporary VPN and keep the global mode turned on (optional, access the AWS console website, access is very slow in some parts of China, especially in campus networks)
3. An email address that has not applied for an AWS free server
4. An SSH remote login tool for accessing and controlling remote servers. You can choose the web version of AWS built-in remote control (no preparation is required, some servers in some regions do not support it, and the web version of SSH does not support Chinese characters), or you can install a client (client recommendation: https://mobaxterm.mobatek.net/)
5. Buy a domain name (no need to register, just pick a cheap one and use it, this tutorial includes the domain name purchase section)

Apply for an AWS account

Address: https://aws.amazon.com/free/ (Follow the website prompts to register an account and verify your identity)
（ Note: You need to prepare a credit card, and one dollar will be frozen for verification during the process ）

Apply for and activate a virtual machine

Enter the console page (select the server region in the upper right corner)
The internet speed in Hong Kong (needs to be activated, no charges apply), followed by Tokyo and Singapore, but I personally feel that places with fast internet speeds also have more IPs blocked by Google Scholar .

Apply for a virtual machine

As shown in the picture

Ubuntu 18 is recommended (ignore the options in the picture)

Note: Choose free , the rest can be left as default

The AWS server uses the key file for ssh control access. If you have a key file and saved it, just use the previous one. If not, create a key with any name, but be sure to download and save it. If you want to remotely access it on the client in the future

Required to access the control server.

In this way, your free cloud server is created and can be used for free for one year.
Note: If you want to use it for free, remember to shut down the cloud server and cancel your account when the year is almost up, then register with another email account and bind a credit card (the one you used before is also fine)

Wait for initialization to complete

Next, check whether you can access Google Scholar. Here, we use the connection service provided by AWS and EC2 Instance Connect to connect (the default configuration is fine). If the web version cannot connect or is not available, try using the client version of the ssh tool. If that doesn't work, restart the instance and try again. (If the client still cannot access, it is probably because the ssh tool is not set up properly or there is a local network problem)

(If available) Follow the prompts to upgrade the tool: sudo yum update

(The web command copy and paste is not easy to use. Try ctrl+c/v and right-click to copy. In many cases, if copying fails, just try a few more times.)

Use curl to access Google Scholar and check whether the IP is blocked (the picture below represents normal access).

If the message "sorry" appears, it means that the account has been blocked.

If it is blocked, terminate the instance and apply for a new one (remember to terminate it first, then repeat the above steps).

Once completed, check your host and remember its ipv4 address.

Configure security groups

We set up a security group to build a proxy and camouflage later (open ports 22, 80, and 443 in the security group)
Remember the corresponding security group name

Select Security Groups in the left column

And enter the security group page

Edit the inbound rules (if it is in English, find it yourself)

Click Add Rule below, configure as shown, and finally click Save Rule.

Domain name configuration

Used for camouflage, making your proxy server look like a website. When you use a proxy, the outside world thinks you are browsing that website.

Buy a domain name (ignore if you already have one)

Register an account on Alibaba Cloud, Tencent Cloud or AWS and purchase a domain name. Take Alibaba Cloud as an example: You can log in to the official website directly with your Alipay account

1. Domain name registration: https://cn.aliyun.com/ (Alibaba Cloud HiChina domain name registration)

Find a cheap one and buy it (it’s best to buy an English domain name)

No filing required

Domain name resolution

Enter the console, find the domain name you just purchased, and click Parse

Add a record

Save it, that's it

Server agent selection and installation

First, connect to the server remotely. Here we use the client remote SSH tool to demonstrate. You can also directly use the previous web version of the remote control tool EC2 Instance Connect. The commands are the same, but the web version does not support Chinese. If you encounter garbled Chinese prompts, you can refer to the screenshots in the relevant tutorials.

If you use the web remote control, skip the following three pictures.

Install and open the SSH remote login tool mentioned at the beginning (recommended: https://mobaxterm.mobatek.net/)
Create a new session

Click OK, then double-click to open

You may not be able to connect after you create it. You need to wait for a while or check whether the local network is blocked.

First, set a password for the root user (the password is not displayed in Linux):

sudo passwd root

Then switch to the root user:

su root

Then we use the one-click installation script on the Internet to install the agent (if the previous steps are correct, just follow the script prompts to install it later)
(If you use mobaxterm, copy and right-click to paste)
Here is a recommended one:

bash <(curl -sL https://s.hijk.art/v2ray.sh)

For specific reference, please refer to the proxy tutorial website: https://v2raytech.com/
You can also search for other proxy software for construction.

The server part is built

Client Software

Android

There is a very useful app called v2rayNG, but it is not available in the App Store. You can find it and download it yourself.

iOS

It’s quite troublesome, why not switch to Huawei?

windows

Recommend trojan-qt5

Download address: https://github.com/McDull-GitHub/trojan-qt5/releases/download/v1.4/Trojan-Qt5-Windows.zip

Run after decompression (it is recommended to create a shortcut)

The new one-click installation seems to support URI subscription, and you can also select the corresponding agent in the link to add it manually.

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