< Changes
Firewalld Default to nftables
Summary
This change will toggle the default firewalld backend from iptables to nftables. All of firewalld's primitives will use nftables while direct rules continue to use iptables/ebtables.
Owner
- Name: Eric Garver
- Email: egarver@redhat.com
Current status
- Targeted release: Fedora 32
- Last updated: 2019-08-28
- Tracker bug: <will be assigned by the Wrangler>
- Release notes tracker: <will be assigned by the Wrangler>
Detailed Description
Firewalld upstream has used nftables as the default backend for the past two minor releases. It is also the default in other distributions (e.g. RHEL-8). This change will bring Fedora in line with upstream.
Using nftables bring many advantages. See firewalld's upstream blog post. It also highlights a few behavioral changes.
Benefit to Fedora
- Less firewall rules (rule consolidation)
All of firewalld's primitives will use the same underlying firewall (nftables) instead of duplicating rules both in iptables and ip6tables. In nftables rules can match both IPv4 and IPv6 packets. This reduces the number of firewall rules by half.
- firewalld's rules are namespaced
With nftables firewalld's rules are isolated to a "firewalld" table. A separate firewall (or user) can create its own independent ruleset.
Scope
- Proposal owners:
- Other developers: N/A (not a System Wide Change)
- Release engineering: #Releng issue number (a check of an impact with Release Engineering is needed)
- Policies and guidelines: N/A (not a System Wide Change)
- Trademark approval: N/A (not needed for this Change)
Upgrade/compatibility impact
N/A (not a System Wide Change)
How To Test
N/A (not a System Wide Change)
User Experience
Dependencies
N/A (not a System Wide Change)
Contingency Plan
- Contingency mechanism: (What to do? Who will do it?) N/A (not a System Wide Change)
- Contingency deadline: N/A (not a System Wide Change)
- Blocks release? N/A (not a System Wide Change), Yes/No
- Blocks product? product
Documentation
N/A (not a System Wide Change)