[GH-ISSUE #2387] Netbird ACL doesn't work when accessing peer with Docker container #5038

New Issue

saavagebueno · 2026-08-05T01:00:58-04:00

saavagebueno commented

2026-08-05 01:00:58 -04:00

Originally created by @alexcupertme on GitHub (Aug 4, 2024).
Original GitHub issue: https://github.com/netbirdio/netbird/issues/2387

Describe the problem
When one peer inside Netbird network tries to reach another peer's container, it fails.
Destination peer has the container with published port, for example 80:8080 (external port should differ)

And in Netbird ACL i only allowed 80 and 443 ports, which should be enough

To Reproduce

Steps to reproduce the behavior:

Connect to the netbird as user peer
Connect host peer
Set up docker container with external port. External port should be 80 (could be any port). Internal should be any except 80. Container should return any response locally on port 80
Add single rule in the list: ALLOW TCP, All Source, All destination, ports 80, 443, bidirectional
curl . Connection timed out
Add second rule in ACL. ALLOW TCP, All source, All destination, port - internal port of the container
curl . Getting response as expected

Expected behavior

It should be enough to add ACL rule, which allows external container port, because why i need to know all port forwardings? I dont want to specify all internal ports of all my containers, because i will expose only 80 port, not their system ports.

Are you using NetBird Cloud?

no

NetBird version

0.28.6

Originally created by @alexcupertme on GitHub (Aug 4, 2024). Original GitHub issue: https://github.com/netbirdio/netbird/issues/2387 **Describe the problem** When one peer inside Netbird network tries to reach another peer's container, it fails. Destination peer has the container **with published port, for example 80:8080** (**external port should differ**) And in Netbird ACL i only allowed 80 and 443 ports, which should be enough ![image](https://github.com/user-attachments/assets/03c6bcb6-b15b-4cc1-98cb-27a1cfd5da24) **To Reproduce** Steps to reproduce the behavior: 1. Connect to the netbird as user peer 2. Connect host peer 3. Set up docker container with external port. External port should be 80 (could be any port). Internal should be any except 80. Container should return any response locally on port 80 4. Add single rule in the list: ALLOW TCP, All Source, All destination, ports 80, 443, bidirectional 5. curl <netbird host ip> . Connection timed out 6. Add second rule in ACL. ALLOW TCP, All source, All destination, port - internal port of the container 7. curl <netbird host ip>. Getting response as expected **Expected behavior** It should be enough to add ACL rule, which allows external container port, because why i need to know all port forwardings? I dont want to specify all internal ports of all my containers, because i will expose only 80 port, not their system ports. **Are you using NetBird Cloud?** no **NetBird version** 0.28.6

saavagebueno added the client acl labels 2026-08-05 01:00:58 -04:00

saavagebueno referenced this issue

2026-08-05 05:09:04 -04:00

[PR #5038] [CLOSED] [client] add option to prevent remove peers and routes when management services are not available #21888

saavagebueno referenced this issue

2026-08-05 05:09:05 -04:00

[PR #5038] [client] add option to prevent remove peers and routes when management services are not available #21895

saavagebueno referenced this issue

2026-08-05 06:09:08 -04:00

[PR #5038] [CLOSED] [client] add option to prevent remove peers and routes when management services are not available #24781

saavagebueno referenced this issue

2026-08-05 06:09:08 -04:00

[PR #5038] [client] add option to prevent remove peers and routes when management services are not available #24789

saavagebueno referenced this issue

2026-08-05 07:07:58 -04:00

[PR #5038] [CLOSED] [client] add option to prevent remove peers and routes when management services are not available #26915

saavagebueno referenced this issue

2026-08-05 07:07:58 -04:00

[PR #5038] [client] add option to prevent remove peers and routes when management services are not available #26922

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Reference: DYNR/netbird#5038