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security steps in the readme

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prashantkamdar 2021-08-15 21:17:54 +05:30
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README.md
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@ -514,7 +514,7 @@ sudo nmap -sS 107.172.193.177 -p 7777,20381,5432
It is important to secure the Postgres port.
Using `ufw` didn't help because docker writes persisten rules to the `iptables`.
Using `ufw` doesn't help because docker writes persisten rules to the `iptables`.
To get around this, first run this command to allow only localhost connections to the docker containers:
@ -522,6 +522,8 @@ To get around this, first run this command to allow only localhost connections t
iptables -I DOCKER-USER -i eth0 ! -s 127.0.0.1 -j DROP
```
Docker documentation reference for more info: [documentation](https://docs.docker.com/network/iptables/#restrict-connections-to-the-docker-host)
Next, to make the changes persistent across reboots, we are going to use `iptables-persistent` package.
```bash