Coming SoonFree editionInternet & connections

Public Wi-Fi Guard

Safe on hotel, airport, café and conference Wi-Fi: recognises an untrusted network the moment you join, turns off file and printer sharing, opens the captive-portal login in an isolated window, connects the VPN before anything else talks, checks for look-alike networks and certificate interception, and gives a one-line verdict: safe to work, use the VPN, or leave.

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The problem

Public Wi-Fi is where laptops get exposed: sharing left on, the captive portal hijacking the browser, a look-alike network with the hotel's name, or a proxy that intercepts certificates. Windows asks 'do you want your PC to be discoverable' and little else. Most people join, click through and hope.

Features

Trust by network identity (SSID plus the router's hardware address), so a look-alike network with the same name is caught
On joining an untrusted network: sharing and discovery off, firewall to public, Tunnel connected before apps are allowed out, and a reminder to switch back when home
Captive-portal helper: detects the login page and opens it in an isolated window with no cookies or passwords, then connects the VPN the moment the portal clears
Interception check: compares certificates of well-known sites with their expected issuers and warns when a proxy is in the middle
Evil-twin signals: two networks with the same name and different hardware, sudden signal changes, open versions of a secured network
A verdict in one line and a travel log of networks used, for expense reports or peace of mind

Who it is for

Business traveller

Hotel Wi-Fi

The Guard sets the firewall to public, opens the portal in an isolated window, and connects Tunnel the moment the login clears.

Conference attendee

Two networks with the hotel's name

An open network with the same name as the secured one is flagged as a possible look-alike; the attendee joins the right one.

Freelancer

A café proxy

Certificates for well-known sites come from an unknown issuer; the verdict says leave, and the freelancer uses the phone hotspot instead.

Benefits

Join public Wi-Fi without exposing your laptop
The portal login handled safely, then the VPN on
A warning when the network is not what it claims

Built to be trusted

Sharing is restored only on networks you have marked trusted
The VPN connects before other apps may send, using Tunnel's kill switch
Portal logins run in an isolated window with nothing of yours in it

Good to know

A VPN protects the path from the laptop to the VPN server, not the websites beyond it, and no check catches every interception. Captive portals sometimes break VPNs until the login clears, which the Guard sequences but cannot always avoid. Tunnel's auto-connect covers the core; this adds the network checks, the portal helper and the sharing hygiene travellers need.

Under the hood

For technical readers

WLAN API; firewall and sharing settings
Captive-portal detection; isolated WebView2
Tunnel; certificate comparison

Works well with

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Notify me when Public Wi-Fi Guard is ready

Public Wi-Fi Guard is planned for a later release. Leave your e-mail address and we will write once when it becomes available. We ask you to confirm your address first, and you can unsubscribe at any time.

Questions now? Contact our team.