If I am on a computer at home, I can go to
And if from a windows or linux computer at home I do
C:\blah>nmap -p80 188.8.131.52
$nmap -p80 184.108.40.206
Then it shows as open
And I can do wget 220.127.116.11
However, if I try from a DigitalOcean VPS
It doesn’t work
> root@ubuntu-s-1vcpu-1gb-lon1-01:~# wget 18.104.22.168 > --2022-09-12 05:03:03-- http://22.214.171.124/ > Connecting to 126.96.36.199:80... ^C > > > root@ubuntu-s-1vcpu-1gb-lon1-01:~# nmap -p80 188.8.131.52 > Starting Nmap 7.80 ( https://nmap.org ) at 2022-09-12 05:03 UTC > Nmap scan report for 184.108.40.206 > Host is up (0.14s latency). > > PORT STATE SERVICE > 80/tcp filtered http > > Nmap done: 1 IP address (1 host up) scanned in 1.77 seconds > root@ubuntu-s-1vcpu-1gb-lon1-01:~# > ` ```
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Sorry, turned out that from my home computer I could access it, but everybody else couldn’t. I had a firewall rule on the VPS that only my IP could access port 80.
I was checking the firewall before but I was only checking the firewall on the VPS I was checking from! I should have checked the firewall on the server itself!
You can also double-check if there are no Firewall rules in place that can cause such behaviour.
Are you sure the port from the DigitalOcean Droplet is not closed and thus not allowing you to reach other ports on different machines?
I see this as the only explanation.