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firewalld vs iptables: catalog facts
firewalld	iptables
Free Free and open source.	Free Free and open source, maintained by the netfilter project.
Linux, Command line	Linux, Command line
Zones set trust levels per connection or interface Changes apply without restarting the service	Ships with or is packaged for nearly every Linux distribution Very large body of existing guides and rule sets
Linux only Zone concepts take some learning compared with plain rule lists	Linux only Rule syntax is terse and easy to get wrong
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.