* Unify peer and route ACL filtering with multi-source peer rules
* Remove partial userspace firewall mode and open foreign chains via a table-less allower
* Snapshot iptables rule maps before persisting state
* Scope userspace firewall wildcard source rules per address family
* Install nftables peer filter and mangle rules in a single transaction
* Share the iptables jump rule spec between install and cleanup
* Fix legacy ACL source wildcard and keep rollback tracking on delete failure
* Fix CI: recognize multi-value port set lookups in tests and correct PeerIP lint suppression
* Fall back to per-prefix filter rules when ipset is unavailable
* Annotate legacy PeerIP usages in ACL tests and fix import formatting
* Keep firewall rule bookkeeping in step with the kernel on replace and teardown
* Release the routing reference when the route manager shuts down
* Keep set references and rule tracking consistent when a routing rule fails
- Port dnat changes from https://github.com/netbirdio/netbird/pull/4015 (nftables/iptables/userspace)
- For userspace: rewrite the original port to the target port
- Remember original destination port in conntrack
- Rewrite the source port back to the original port for replies
- Redirect incoming port 5353 to 22054 (tcp/udp)
- Revert port changes based on the network map received from management
- Adjust tracer to show NAT stages
implements DNS query caching in the DNSForwarder to improve performance and provide fallback responses when upstream DNS servers fail. The cache stores successful DNS query results and serves them when upstream resolution fails.
- Added a new cache component to store DNS query results by domain and query type
- Integrated cache storage after successful DNS resolutions
- Enhanced error handling to serve cached responses as fallback when upstream DNS fails
makes the DNS forwarder port configurable in the management and client components, while changing the well-known port from 5454 to 22054. The change includes version-aware port assignment to ensure backward compatibility.
- Adds a configurable `ForwarderPort` field to the DNS configuration protocol
- Implements version-based port computation that returns the new port (22054) only when all peers support version 0.59.0 or newer
- Updates the client to dynamically restart the DNS forwarder when the port changes
adds NetFlow functionality to track and log network traffic information between peers, with features including:
- Flow logging for TCP, UDP, and ICMP traffic
- Integration with connection tracking system
- Resource ID tracking in NetFlow events
- DNS and exit node collection configuration
- Flow API and Redis cache in management
- Memory-based flow storage implementation
- Kernel conntrack counters and userspace counters
- TCP state machine improvements for more accurate tracking
- Migration from net.IP to netip.Addr in the userspace firewall
