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Questions tagged [docker-networking]

57 questions
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Unable to access docker containers in bridge networks through vpn when outside

I have transmission and docker-wireguard-pia set up. I can access the transmission webui on lan, but when i try to access it through a vpn(pivpn wireguard), I can access the other services but am unable to access the transmission webui. I have tried…
joaduh
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Map Container Ports Using Docker's network_mode

I have multiple docker containers that (by default) can be accessed via port 80. I'm able to run them all on the same machine by mapping their default ports in the docker-compose files, like so: services: application1: container_name: app1 …
et_al
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How to fix IP checksum between VirtualBox guest and docker bridge

I am not able to communicate between docker containers and VirtualBox guest due to IP checksum failure. On my host (Ubuntu 20.04) I have a Docker network with multiple containers (Ubuntu 18.04) communicating with each other. My host also has a…
mrtnlrsn
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How to network AWS IPs across on multiple interfaces to individual docker containers?

We are currently hosting docker on an AWS EC2 but have run into a bit of network issue. We have multiple containers connected to a docker network bridge called NetBrig. I want to forward all traffic coming in on different AWS IPs across multiple…
Mark B
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Connect redis-cluster(running in docker) from host machine

I have used docker-compose with static ip to create redis-cluster, everything ran successfully but now I am stuck at how do I connect my host application to redis-cluster running in side docker. version: '3' services: hdbrediscluster: …
HDB
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Windows docker container cannot reach another host on the same private network

I'm running a Docker container on Windows: docker run -d -p 2001:8080 -v F:\Scan:/app/data/output -e SANED_NET_HOSTS="192.168.1.200" --restart unless-stopped --name scanservjs --privileged sbs20/scanservjs:latest This basically helps converting my…
Nuno
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ebtables not working in docker

Hi I am trying to run ebtables within docker however none of the ebtables rules are being hit. For example - pay attention that counters are not increased though ARP is sent and succeeds [root@injector /]# ebtables -A OUTPUT -p ARP -j…
Boris
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Distribute IPs from DHCP server in host network to docker containers

I am running several services in docker containers for my homelab, and I need them to be accessible from their own distinct IPs. My host system is running debian "bullseye". From the docker documentation, it seems natural to use a macvlan network in…
marc
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Docker isn't fowarding port to redis

I'm trying to run redis in a docker container on AmazonLinux, and I can't for the life of me get it to forward the port. It starts as it should and appears to be working, but there is no process listening on 6379 on the host box, as one would…
Andrew Cone
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Link docker container to a specific network interface

I am trying to start OpenVPN server for accessing resources on VPC network. I have two network interfaces, public eth0 and VPC eth1. And an OpenVPN working in a docker container. But I want to use this VPN only to access resources over eth1…
Danil
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407 Proxy Authentication Error When Running Python in Docker but *Not* when running from local environment

I'm having a peculiar issue. When I make requests running my script on my local machine and go through the (paid and authenticated) proxy, it runs just fine. However, when I containerize the application and attempt to run again, I get the following…
jimBeaux27
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docker-compose with multiple networks

I want to install NextCloud (https://hub.docker.com/_/nextcloud) via docker-compose. After analyzing the docker-compose structure, I see that this image is composed of two services (app and db). Currently, in a server, I have all docker based…
wadge
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Unable to use Docker DNS with nftables

I have a bind9 DNS container running on 10.64.128.53, which is on the docker network "servers" on the subnet 10.64.128.0/24. this works fine and if I run: nslookup google.com 10.64.128.53 I get the output: Server: 10.64.128.53 Address: …
Desultory
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How to add a network interface to Docker Overlay network?

How can I add a network interface (either a physical like eth0 or virtual like tap) to Docker Overlay network overlaynet? So that my interface becomes part of the layer 2 network with the other containers in that Overlay network? When I used to…
Mohammed Noureldin
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strange NAT issues with pfSense to vagrant VM

This one has got me confused: I have a pfSense firewall (let's call it pfs) and behind it several servers. I NAT several services from my public IP to different servers on the LAN without any issues. On one of the servers (let's call it s1) I'm…
ppenguin
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