Antrea
7.2#1 in microsegmentation softwareFree planFree planAPILinuxSelf-hostedWindows
VisitAntrea vs Flannel
What both publish
| Fact | Antrea | Flannel |
|---|---|---|
| Encryption | Inter-node pod traffic can be encrypted with IPsec or WireGuard tunnels. | The WireGuard backend encapsulates and encrypts packets using the in-kernel WireGuard implementation. |
| Integrations | The documentation lists integrations and guides for Prometheus, Octant, Multus, and Fluentd. | The project lists kube-network-policies, Canal, K3s, and RKE2 as projects that integrate with Flannel. |
| Purpose | Antrea implements the Container Network Interface and Kubernetes NetworkPolicy to provide pod networking and security for Kubernetes workloads. | Flannel provides a layer 3 network fabric for containers designed for Kubernetes. |
| Support | The project directs users to its Kubernetes Slack channel, mailing lists, community meetings, and office hours. | The project points users to the #k3s channel in Rancher Users Slack, the #flannel-users channel in Calico Users Slack, and GitHub issues for bugs. |
Antrea plans
- AntreaFree
Flannel plans
- FlannelFree
Pick Antrea if…
Antrea suits Kubernetes operators who need pod networking, network policy controls or multi-cluster capabilities. It requires Open vSwitch on every node, and its traffic encryption feature applies to Linux nodes rather than Windows nodes.
Pick Flannel if…
Flannel suits teams setting up container networking in Kubernetes or Docker environments. Users who need network policy enforcement should account for its lack of native enforcement.