The Tunnel Cat

The Tunnel Cat

A multi-layer HTTPS tunnel indistinguishable from browser traffic.
Works where others fail silently.

uTLS HTTP obfuscation Multi-hop routing 7 protection layers

Standard tunnels are trivially visible

Deep Packet Inspection analyzes traffic at the provider level. IP address and port alone are no longer enough.

Standard tunnels get blocked
Blocked
OpenVPN

Unique handshake signature. Blocked within seconds of detection.

Blocked
WireGuard

UDP packets identified by entropy and size. Trivial to block.

Blocked
Shadowsocks / V2Ray

Statistical entropy analysis. Detected via traffic pattern matching.

Passes through
NavLink

Indistinguishable from browser HTTPS. Seven independent layers of detection resistance.

Four nodes. One path.

Traffic passes through four independent components. The client only knows control node addresses — exit and arbiter addresses are never exposed to it.

NavLink architecture: Client, Control, Exit, Internet
Client Control Exit Internet
Full architecture breakdown

Seven layers. Zero fingerprint.

Each layer is an independent barrier. Even if one is compromised, the rest hold.

01

uTLS Browser Fingerprint

TLS ClientHello is indistinguishable from Chrome, Firefox, or Safari. Rotated on every connection.

02

Channel Byte in Session ID

Control byte hidden inside the standard TLS Session ID field. Indistinguishable from random data to DPI.

03

HTTP Obfuscator

Tunnel looks like a chunked HTTP upload: random chunk sizes 4–64 KB, padding no less than 512 B, jitter 0–50 ms.

04

Decoy Traffic

Parallel uTLS requests to real CDN endpoints (jsDelivr, googleapis). Traffic statistics match a real browser session.

05

Adaptive Pacing

Burst smoothing. Traffic pattern stays within the bounds of normal web browsing activity.

06

404 on Unknown Requests

The server never reveals its purpose. No VPN headers, no CONNECT method, no 401 or 403 responses.

07

Hidden Topology

Client does not know the exit address. Exit does not know the arbiter. Blocking one node reveals nothing about the rest.

All seven layers in detail

NavLink vs. the rest

Feature OpenVPN WireGuard Outline Tor NavLink
DPI-resistant NoNoPartialPartial Yes
Indistinguishable from HTTPS NoNoNoNo Yes
Decoy traffic NoNoNoNo Yes
No public node IPs NoNoNoNo Yes
UDP YesYesNoNo Yes
Enterprise management PartialNoNoNo Yes
Speed PartialYesYesNo Yes
Full comparison

Tunnel through the noise

Reach anything, from anywhere.

Get Access