Mobile VPN
A tunnel that survives switching between Wi-Fi and cellular.
How widely is it used?
Common in production todayStandard for field workforces; IKEv2 and WireGuard both handle roaming well.
How it works
The session is bound to an identity rather than an IP address, so when the handset roams between networks the tunnel re-keys and resumes instead of dropping. IKEv2 with MOBIKE and WireGuard's stateless design both handle this well.
Connects
Mobile device → private network
Protocols
IKEv2/IPsec (MOBIKE), WireGuard
Typical users
Field engineers, Delivery fleets, Healthcare staff
Main use case
Keeping a session alive while moving between networks.
Advantages
- Seamless roaming
- Fast reconnect after signal loss
- Battery-friendly with modern protocols
Limitations
- Behaviour varies by OS and VPN client
- Aggressive battery savers can still kill sessions