OSTP

Disconnected

Tap to protect your traffic

—

RTT --

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Profiles

No profiles yet.
Tap + to add one.

Client Settings

TUN Mode Route all system traffic

Kill Switch Block traffic if VPN drops

Multiplexing Multiple streams over one connection

Sessions

MTU

DNS

Local Proxy

Exceptions / Routing

Excluded Domains

Excluded IPs / Subnets

Excluded Processes

Application

Auto-connect Connect on startup

Launch at Startup Start with Windows

Debug Logs Verbose output to .log file

Show RTT Display live ping on dashboard

Show Speed Display traffic speed on dashboard

Obfuscation

Junk Packets Random noise before connection (UoT only)

TCP Fragmentation Split handshake into segments (UoT only)

OSTP GUI

Paste link

New Profile

Name

Server

Access Key

Transport

Share Profile

QR generated locally — the key never leaves this device.

Wintun Driver Missing

TUN mode requires the Wintun network driver.

Download wintun.zip from wintun.net
Extract amd64\wintun.dll
Place it here: ...
Restart the connection

Open wintun.net ↗

Junk Packets

Sends random garbage frames before the Noise handshake to confuse DPI pattern matching. Active in UoT/TCP mode only.

Count min

Count max

Size min (bytes)

Size max (bytes)

TCP Fragmentation

Splits the initial handshake into tiny TCP segments with delays between them. Prevents DPI from reading the full handshake signature. Active in UoT/TCP mode only.

Chunk size (bytes)

Delay (ms)