159
Linux Firewalls: How to Actually Secure a Cloud Server (iptables, nftables, firewalld, ufw)
(blog.hofstede.it)
this post was submitted on 12 Jul 2026
159 points (98.2% liked)
Technology
86302 readers
3031 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related news or articles.
- Be excellent to each other!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, this includes using AI responses and summaries. To ask if your bot can be added please contact a mod.
- Check for duplicates before posting, duplicates may be removed
- Accounts 7 days and younger will have their posts automatically removed.
Approved Bots
founded 3 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Sure, but what if youve configured your waf or w/e incorrectly, what if someone gains access to another part of your network? Having sane firewall settings is always better than none at all.
All the cloud services I've used had virtual network firewalls for internal traffic. Security Groups for AWS, Cloud Firewall for GCP, etc. That's typically how lateral traffic gets managed. Defense in depth is good, but as I said I haven't used host firewalls in forever, and we get audited for security certificates every year, and no auditor has asked about them that I recall.