Internal network monitoring (lemmy.world)

submitted 1 day ago* (last edited 1 day ago) by ueiqkkwhuwjw@lemmy.world to c/selfhosted@lemmy.world

21 comments fedilink hide all child comments

How do you monitor your homelab network for internal attackers? E.g. you have a publicly available service and theres a vulnerability that you miss or you pull a bad update and suddenly someone has access to your VM/machine/container. How could you increase the chances of automatically detecting that?

The built in IDS in opnsense seems pretty useless, and doesn't really help detect if e.g. someone is trying to exploit services between your vlans (I could be using it wrong though).

Crowdsec in opnsense is nice but it seems to also be primarily for protecting from malicious actors coming from the WAN.

I've heard about the opnsense zenarmor plugin but you have to agree to a privacy policy to use it?

Another option I guess would be collecting firewall logs and making custom notifications for things that you think would be suspicious on your network.

I also know update cooldowns and not exposing anything could largely solve this too, but the monitoring and alerting question really interests me.

you are viewing a single comment's thread
view the rest of the comments

[-] ueiqkkwhuwjw@lemmy.world 1 points 1 hour ago

Very interesting. Thanks for your input :)

this post was submitted on 01 Jun 2026

68 points (100.0% liked)

Selfhosted

59604 readers

730 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 3 years ago

MODERATORS

HybridSarcasm@lemmy.world

HybridSarcasm@lemmy.hybridsarcasm.xyz