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ACLs problem ( it is confuse about my ACLs can not working well) #255
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opened 2025-12-29 01:25:06 +01:00 by adam
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Reference: starred/headscale#255
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Originally created by @yockrain on GitHub (Apr 11, 2022).
Issue description
Dear all,
I make a Headscale server and three Derp servers,
I created four namespaces, and want to control the nodes by ACLs, e.g. a node only can access another node with same namespaces. But admin can access all nodes.
but I found all nodes can access each other even between different namespaces.
could you give me some advice about how to find the problem? thanks
and another question, which command can check the tag of every nodes in client&server command line window?
To Reproduce
Headscale Server
node 3
node 7
and the others nodes are same as node 3 and 7.
Context info
@awsong commented on GitHub (Apr 12, 2022):
I'm seeing the same problem.
According to Tailscale tag documentation , "Once a device has been tagged, it loses the access permissions of the human user who tagged it". So if tagging is successful, "headscale node ls" shouldn't list the node under human user's namespace anymore.
@awsong commented on GitHub (Apr 12, 2022):
I suspect that tag related functions are not implemented yet because I searched the code base and didn't find tag applying code. @juanfont , could you please give some hint? I'd like to help.
@yockrain commented on GitHub (Apr 12, 2022):
@awsong Thank you for you help, Look forward your good news and I hope it will have a good solution in the short time.
@restanrm commented on GitHub (Apr 15, 2022):
That's right nothing is implemented in the presentation side on this, it's a work in progress. But, behind the curtains, the behaviour should be similar to Tailscale. The tagged node should not match the user in the ACL's. There are some unit tests to validate this behaviour.
@restanrm commented on GitHub (Apr 15, 2022):
With a quick look, it seems you
acls.hujsonfile is invalid. The behaviour of the latest release version is let all traffic go through in this case. On the main branch of headscale, this behaviour has been changed, and if the file has issues, Headscale stop.What I can see that is wrong is the
portsif theself aclssection.Give a look at this document, and keep in mind that Namespaces are Users (we planned to rename namespace to user in next release, but work hasn't been started yet). With OIDC enabled, the Namespaces are the user's email address.
@yockrain commented on GitHub (Apr 16, 2022):
@restanrm Thank you for your explain to indicate my mistake of ACLs file. Base on your advice this is the correctional parts of acls.hujson, it is correct or not ?
@restanrm commented on GitHub (Apr 26, 2022):
Sorry I forgot to reply. Use the following:
@kradalby commented on GitHub (Jun 12, 2022):
I am going to shelve this for now, if this is still an issue, please reopen.