Linux net tools

apt update
apt upgrade
apt install -y net-tools
ifconfig
apt install -y iputils-ping
apt install -y telnet

Nginx reverse proxy

upstream backend {
  server localhost:1080;
}

server {
    listen 80 default_server;
    listen [::]:80 default_server ipv6only=on;
    listen 443 ssl default_server;
    listen [::]:443 ssl default_server;

    ssl_certificate     /etc/nginx/ssl/server.crt;
    ssl_certificate_key /etc/nginx/ssl/private.key;
    ssl_dhparam /etc/nginx/ssl/dhparams.pem;

    ssl_session_cache shared:SSL:9m;
    ssl_session_cache shared:ssl_session_cache:10m;
    ssl_session_timeout 5m;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;
    ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';
    ssl_stapling on;
    ssl_stapling_verify on;
    add_header X-Frame-Options "DENY";
    add_header X-Content-Type-Options nosniff;
    add_header X-XSS-Protection "1; mode=block";
    add_header Strict-Transport-Security "max-age=63072000; includeSubdomains; preload";
    resolver 8.8.8.8 8.8.4.4 valid=300s;
    resolver_timeout 5s;
    location ~ /\.ht {
    deny all;
    }



    
    location / {
      root /usr/share/nginx/html;
      index index.html index.htm;
    }

    location /image/ {
       proxy_pass http://backend/;

       # 注意 /image及 http:/backend是沒作用的, 記得要用/image/及 http:/backend/ 才行

       # 定義 header 變數, 記錄使用者的 IP
       proxy_set_header X-Real-IP $remote_addr;
        
       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

       proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
       proxy_max_temp_file_size 0;
    }

}

NGINX default.conf FreeSSL certificate.crt

cd /etc/nginx/ssl
openssl dhparam -out dhparams.pem 4096

cat certificate.crt > server.crt
echo -e "\n" >> server.crt
cat ca_bundle.crt >> server.crt

server {
    listen 80 default_server;
    listen [::]:80 default_server ipv6only=on;
    listen 443 ssl default_server;
    listen [::]:443 ssl default_server;

    ssl_certificate     /etc/nginx/ssl/server.crt;
    ssl_certificate_key /etc/nginx/ssl/private.key;
    ssl_dhparam /etc/nginx/ssl/dhparams.pem;

    ssl_session_cache shared:SSL:9m;
    ssl_session_cache shared:ssl_session_cache:10m;
    ssl_session_timeout 5m;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;
    ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';
    ssl_stapling on;
    ssl_stapling_verify on;
    add_header X-Frame-Options "DENY";
    add_header X-Content-Type-Options nosniff;
    add_header X-XSS-Protection "1; mode=block";
    add_header Strict-Transport-Security "max-age=63072000; includeSubdomains; preload";
    resolver 8.8.8.8 8.8.4.4 valid=300s;
    resolver_timeout 5s;
    location ~ /\.ht {
    deny all;
    }
}

Install yum

apt-get install yum
apt-get install yum-utils 

install sudo

apt-get update -y
apt-get upgrade -y
apt-get install sudo -y

Install git-2.16.1.tar.gz on debian

# Remove packaged Git
sudo apt-get remove git-core

# Install dependencies
sudo apt-get install -y libcurl4-openssl-dev libexpat1-dev gettext libz-dev libssl-dev build-essential

# Download and compile from source
cd /tmp
curl --remote-name --progress https://www.kernel.org/pub/software/scm/git/git-2.16.1.tar.gz
tar -xzf git-2.16.1.tar.gz
cd git-2.16.1/
./configure
make prefix=/usr/local all

# Install into /usr/local/bin
sudo make prefix=/usr/local install

tmpfs problem

vi /etc/fstab
tmpfs                   /dev/shm                tmpfs   defaults,size=1g 0 0
mount -a