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rasmus-kirk
2025-10-23 14:31:53 +02:00
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tests/vpn-confinement-test.nix
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/*
VPN Confinement Integration Test
VPN Confinement Integration Test
This test validates that Nixarr services are properly confined to a VPN namespace
and cannot leak traffic when the VPN connection fails. It uses a 3-VM topology
to simulate real-world network conditions.
This test validates that Nixarr services are properly confined to a VPN namespace
and cannot leak traffic when the VPN connection fails. It uses a 3-VM topology
to simulate real-world network conditions.
Network Topology:
┌──────────────┐ VLAN 2 ┌─────────────┐ VLAN 1 ┌─────────────┐
│internetClient│ ◄──────────── │ gateway │ ◄──────────── │ nixarrHost │
│ 10.0.1.2 │ │ 10.0.1.1 │ │192.168.1.2 │
│ fd00:2::2 │ │192.168.1.1 │ │ fd00:1::2 │
└──────────────┘ │ fd00:2::1 │ └─────────────┘
│ fd00:1::1 │ │
└─────────────┘ │
│ │
WireGuard tunnel │
10.100.0.1 ◄────────────────────────┘
fd00:100::1 VPN namespace
(10.100.0.2, fd00:100::2)
Network Topology:
┌──────────────┐ VLAN 2 ┌─────────────┐ VLAN 1 ┌─────────────┐
│internetClient│ ◄──────────── │ gateway │ ◄──────────── │ nixarrHost │
│ 10.0.1.2 │ │ 10.0.1.1 │ │192.168.1.2 │
│ fd00:2::2 │ │192.168.1.1 │ │ fd00:1::2 │
└──────────────┘ │ fd00:2::1 │ └─────────────┘
│ fd00:1::1 │ │
└─────────────┘ │
│ │
WireGuard tunnel │
10.100.0.1 ◄────────────────────────┘
fd00:100::1 VPN namespace
(10.100.0.2, fd00:100::2)
Test Coverage:
- VPN namespace isolation (transmission confined to wg namespace)
- IPv4 and IPv6 traffic routing through VPN tunnel
- Traffic leak prevention when VPN is down
- Port forwarding from external clients through gateway to VPN services
- DNS configuration in VPN namespace
- Service recovery after VPN reconnection
Test Coverage:
- VPN namespace isolation (transmission confined to wg namespace)
- IPv4 and IPv6 traffic routing through VPN tunnel
- Traffic leak prevention when VPN is down
- Port forwarding from external clients through gateway to VPN services
- DNS configuration in VPN namespace
- Service recovery after VPN reconnection
The test ensures that:
1. All transmission traffic goes through the VPN tunnel
2. Source IP is preserved (shows VPN client IP: 10.100.0.2/fd00:100::2)
3. No traffic leaks to host network when VPN fails
4. External port forwarding works correctly
5. Both IPv4 and IPv6 work identically through the tunnel
The test ensures that:
1. All transmission traffic goes through the VPN tunnel
2. Source IP is preserved (shows VPN client IP: 10.100.0.2/fd00:100::2)
3. No traffic leaks to host network when VPN fails
4. External port forwarding works correctly
5. Both IPv4 and IPv6 work identically through the tunnel
*/
{
pkgs,