Automatically updates IP blacklist for EdgeOS

1. Copy the script update-blacklist.sh to /config/scripts/post-config.d/update-blacklist.sh

2. Make the script executable: chmod +x /config/scripts/post-config.d/update-blacklist.sh

3. Edit /config/config.boot to use blacklist e.g.

   firewall {
       ...
   +   group {
   +       network-group BLACKLIST_DROP {
   +       }
   +       network-group BLACKLIST_DROPv6 {
   +       }
   +   }
       ...
       ipv6-name WANv6_IN {
           ...
   +       rule 30 {
   +           action drop
   +           description "Networks to drop from blacklist"
   +           source {
   +               group {
   +                   network-group BLACKLIST_DROPv6
   +               }
   +           }
   +       }
       }
       ...
       name WAN_IN {
           ...
   +       rule 30 {
   +           action drop
   +           description "Networks to drop from blacklist"
   +           source {
   +               group {
   +                   network-group BLACKLIST_DROP
   +               }
   +           }
   +       }
   +   }
   }

4. Edit /config/config.boot to update blacklist e.g. everyday at 1am

   system {
       ...
   +   task-scheduler {
   +       task BLACKLIST {
   +           crontab-spec "0 1 * * *"
   +           executable {
   +               path /config/scripts/post-config.d/update-blacklist.sh
   +           }
   +       }
   +   }
   }

5. Reboot device: reboot