ICTSC2018 それはアクセスできないようにしたはずなのに…… 問題環境

docker-compose.yml

version: '2'

services:
  db:
    container_name: database
    image: mariadb:10.2.22
    ports:
      - "3306:3306"
    volumes:
      - ./db:/var/lib/mysql
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: wordpress
      MYSQL_DATABASE: wordpress
      MYSQL_USER: wordpress
      MYSQL_PASSWORD: wordpress
  wordpress:
    image: wordpress:5.0.3-php7.1-apache
    container_name: wordpress 
    depends_on:
      - db
    ports:
      - "80:80"
    links: 
      - db
    restart: always
    environment:
      WORDPRESS_DB_HOST: db:3306
      WORDPRESS_DB_PASSWORD: wordpress
  phpmyadmin:
    image: phpmyadmin/phpmyadmin:4.8
    container_name: phpmyadmin
    depends_on: 
      - db
    restart: always
    ports:
      - "8080:80"
    environment:
     - PMA_HOST=db

rules.v4

# /etc/iptables/rules.v4
*filter
:INPUT ACCEPT [0:0]
-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT
-A INPUT -s 127.0.0.1/32 -p tcp -m tcp --dport 8080 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 8080 -j DROP
-A INPUT -s 10.0.0.0/8 -p tcp -m tcp --dport 22 -j ACCEPT
-A INPUT -s 172.16.0.0/12 -p tcp -m tcp --dport 22 -j ACCEPT
-A INPUT -s 192.168.0.0/16 -p tcp -m tcp --dport 22 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 22 -j DROP
COMMIT