Outbound telnet connection from Docker container refused but works fine on host

saada Published at Dev

saada

I'm facing a network issue on a node hosted via Tutum to AWS.

I sshed into the node and ran

telnet localhost 3000

and it works great. When I docker exec -it <containerid> bash into one of my containers and run the same command above and I get this error:

telnet: Unable to connect to remote host: Connection refused

Can anyone shed some light as to why outbound connections from container to host is not permitted?

Auzias

What network stack are your containers using? localhost mean local. On your host it is the host-local-interface, your containers it is their own host-local-interface. So unless you run your containers with --net=host it is a regular behavior since there is no service running on containers-localhost-ip:3000 but only on host-localhost-ip:3000 which are different.

Collected from the Internet

Please contact [email protected] to delete if infringement.

edited at2021-02-25

Comments

0 comments

From Dev

Related Related

Article

Outbound telnet connection from Docker container refused but works fine on host

Outbound telnet connection from Docker container refused but works fine on host

Connection refused with telnet, curl works

Connection refused on docker container

Telnet [Unable to connect to remote host: Connection refused]

Connection Refused connecting from docker to Elasticsearch docker container

Connection refused on nginx docker container

Docker mongo image 'Connection refused' from other container

docker nginx container not receiving request from outside, connection refused

Nginx in Docker container gets `connection reset` error, but works fine without a container

Nginx in Docker container gets `connection reset` error, but works fine without a container

SSH and Telnet Connection refused

SSH and Telnet Connection refused

Android Socket fails to create, Telnet connection works fine

Why does telnet localhost 25 works and telnet mailvm2 25 get Connection refused?

Telnet connection to Debian machine refused

Getting "connection refused" when trying to access etcd from within a Docker container

Docker container Network connection between different host

Connecting from a docker container to the host?

Restarting host from docker container

Docker container inaccessible from host

Host monitoring from a docker container

Docker container inaccessible from host

Connecting from a docker container to the host?

Spring boot inside docker container throws java.net.ConnectException: Connection refused (Connection refused)

Connection refused when try to connect http server in docker daemon container

Connection refused : Nginx HTTPS reverse proxy in docker container

Virtualbox, ssh from Ubuntu host to Ubuntu guest: connection refused

Docker: Copying files from Docker container to host

telnet - "Connection closed by foreign host"

Connection refused only locally. Access from outside works