Connect To Own Machine within docker

Hey, I got a quite weird problem with a docker container on a droplet.

The container runs a webserver with php. When I want to get a file via http (by the public url, not by “localhost”) I always run into timeouts.

For example: wget never returns something. When I retreave the URL inside my Browser its works fine. The DNS resolution also seems to woks perfectly.

I Also tried to establish a telnet connection to port 80. It works from outside, but not from inside the container.

traceroute (from inside the container) returns the following:

traceroute to (, 30 hops max, 60 byte packets
 1  * * *
 2  * * *
 3  * * *
 4  * * *
 5  * * *
 6  * * *
 7  * * *
 8  * * *
 9  * * *
10  * * *
[... and so on]

So its not very helpful.

I use the exact same image on another machine (not digitalocean) an there it works.

Do you have any ideas to fix this?

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Bobby Iliev
Site Moderator
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August 21, 2022

Hi there,

I’ve just tested this and I was able to run the wget command from my Droplet.

Are you running the command on the same Droplet that the container is running on?

If this is the case, it sounds like that you might have a firewall which is blocking the outgoing TCP connections on port 80. Can you verify if this is the case? If this is the case, you would just need to open port 80 for outgoing TCP connections for that Droplet and it should work as expected.

Let me know how it goes!



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