strongSwan vs ZeroTier
A detailed comparison to help you choose between strongSwan and ZeroTier.
Quick Verdict
4.0/5
strongSwan
319 reviews
4.5/5
ZeroTier
31 reviews
ZeroTier is rated higher (4.5 vs 4.0). strongSwan is a modular IPsec VPN suite providing encryption, authentication, and key exchange for secure site-to-site and remote access connections. Designed for Linux and embedded platforms with minimal resource overhead. ZeroTier creates virtual Ethernet networks over the internet. Connect servers, VMs, and devices as if on the same LAN. Free for 25 devices. SDN-based architecture.
strongSwan Open-source IPsec VPN implementation for Linux and embedded systems | ZeroTier Virtual networking — Ethernet over the internet | |
|---|---|---|
| Overview | ||
| Rating | 4.0 (319 reviews) | 4.5 (31 reviews)✓ |
| Pricing model | free | freemium |
| Starting price | Free | Free tier available |
| Best for | Infrastructure teams building enterprise VPN gateways, SD-WAN solutions, or encrypted tunnels on Linux servers and embedded devices | Homelab operators and small teams wanting virtual Ethernet networks connecting distributed servers |
| Tags | ||
| Tags | free tieropen sourceself hostable | free tieropen sourceapi access |
| Visit strongSwan → | Visit ZeroTier → | |
strongSwan
Pros
- + Supports both IKEv1 and IKEv2 with modern cryptographic algorithms
- + Minimal dependencies and lightweight, suitable for embedded systems
- + Extensive certificate and PKI integration capabilities
- + Active development with security audits and regular updates
- + Fully open-source with no licensing restrictions
Cons
- - Steeper configuration learning curve compared to GUI-based VPN tools
- - Requires Linux/Unix environment; no native Windows or macOS client implementation
ZeroTier
Pros
- + Free for up to 25 devices
- + Virtual Ethernet — servers appear on same LAN
- + Works through NAT and firewalls
Cons
- - ZeroTier controls the SDN layer — trust required
- - Less control than pure WireGuard
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