86
How to block unwanted outbound traffic from your containers
(blog.dera.page)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 10 May 2026
86 points (97.8% liked)
Selfhosted
59066 readers
912 users here now
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
Rules:
-
Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.
-
No spam posting.
-
Posts have to be centered around self-hosting. There are other communities for discussing hardware or home computing. If it's not obvious why your post topic revolves around selfhosting, please include details to make it clear.
-
Don't duplicate the full text of your blog or github here. Just post the link for folks to click.
-
Submission headline should match the article title (don’t cherry-pick information from the title to fit your agenda).
-
No trolling.
-
No low-effort posts. This is subjective and will largely be determined by the community member reports.
Resources:
- selfh.st Newsletter and index of selfhosted software and apps
- awesome-selfhosted software
- awesome-sysadmin resources
- Self-Hosted Podcast from Jupiter Broadcasting
Any issues on the community? Report it using the report flag.
Questions? DM the mods!
founded 2 years ago
MODERATORS
Same here. K8s makes stuff like this so mucb easier, since you can declaratively control traffic flow via NetworkPolicies.
And with cilum you ca use hubble to visualize whay traffic is currently happening, in order to figure out what is actually needed.
I also use Cilium as my host based firewall instead of ufw/firewalld.
https://docs.cilium.io/en/latest/security/host-firewall/
I've been waiting for the L7 host policies before applying it to the host, looks like beta is here. I'll give that a shot.