Ubuntu: “Problem binding to port 80: Could not bind to IPv4 or IPv6” (Solutions)

Most common problem using a Ubuntu OS is the ‘binding to port 80: Could not bind to IPv4 or IPv6’

So out of curiosity I found some answer in Github and YøùTùbé

Again, This tutorial is not mine. I just want to share it to you to make us all happy and to overcome stress of port 80 mania 

First Solution : Using ‘ufw command’

This method is working to ubuntu 18 based on my experience, try it also to other versions

In your VPS type:

sudo -s

then type

ufw

to see the commands in installing ufw

type

apt install ufw

next run

snap install ufw

run

ufw status

to see its status

as you can see in the picture, it is inactive so we need to run

ufw enable

type Y to continue

ufw status

again to see if the ufw is enabled

If its enabled, now run the command

ufw allow 80/tcp

Next is

ufw allow ssh

ufw status

again to see if Port 80 is Open in both iPV4 and 6

Lastly,

run

ufw reload

You can now test if it works [In my case, I need to generate cert from certbot and this works for me, again in my ubuntu18]


Second Solution: Using apache and docker proxy

Based on my experience, it works in my ubuntu 20

First run this command

systemctl stop apache2.service

next run

docker container ls

to see the commands in installing docker

First we try to run

snap install docker

now let’s try to run

docker-proxy

it say’s not found so we need to run
install apt docker.io

Just press Y to continue

Lastly, let’s run again

docker-proxy

if the system accepts it.

based on the picture above, we successfully run the dockery-proxy so we are now free to test if the problem is Fixed

And I hope it will really fix your problem in making Port 80 open 

So in my ubuntu 20 I tried this in generating certificate using certbot

And it works!

I Hope this tutorial helps you in your Port 80 problem 

You can also try this in other OS, if this also works, Congrats 

So yun, Share ko lang po yan sakit ng ulo at ilong ko