Clientless SSL VPN
Browser-only access to selected internal applications.
How widely is it used?
Still around, but being replacedBeing replaced by identity-aware proxies and ZTNA portals.
How it works
A TLS portal proxies specific internal web apps, file shares or RDP sessions through the browser. No tunnel adapter is installed, so only the applications the portal publishes are reachable.
Connects
Browser → VPN gateway / application portal
Protocols
SSL/TLS, HTTPS reverse proxy
Typical users
Remote workers, Third-party vendors, BYOD users
Main use case
Give unmanaged devices access to a handful of web applications.
Advantages
- No software to install
- Naturally least-privilege — only published apps are exposed
Limitations
- Narrower than a full network tunnel
- Non-web protocols need extra plumbing