# 安装
yum install iptables
yum update iptables 
yum install iptables-services
service iptables status

iptables -L # 列表
iptables -nL --line

iptables -A INPUT -p tcp --dport ssh -j ACCEPT # 开启 SSH

apt install ufw # 安装

ufw disable # 禁用

apt-get remove ufw # 卸载
apt-get purge ufw # 清除

ufw status # 查看

ufw enable # 启用

### Apache 安装及使用

https://blog.51cto.com/itwish/2160492

### 反向代理 https

https://docs.rapidminer.com/latest/legacy/configure/security/reverse-proxy.html

```
<VirtualHost *:80>

# docker 安装 12.8
docker run --restart=always --name=pg \
    -e POSTGRES_PASSWORD=<MySecretPassword> \
    -e PGDATA=/var/lib/postgresql/data/pgdata \
    -v /package/pgdb:/var/lib/postgresql/data \
    -p 5432:5432 -d postgres:12.8
    
# help
https://hub.docker.com/_/postgres

npm install -g browserify   # 安装      yarn global add browserify

browserify index.js -o bundle.js    # 捆绑打包

# help
http://browserify.org/