Normal browser
The checked observation does not show the condition described above, or the measurement is unavailable. A missing measurement is inconclusive.
← All detection signalsDETECTION SIGNALEXPLANATION01 EXPECTED RESPONSE 02 POSSIBLE ANOMALY
Residential Proxy TCP Clamping
A closer look at the browser, network, or interaction evidence behind this signal.
What we test
TCP SYN packet inspection on port 8443 revealed abnormal MSS clamping (MSS <= 1420 bytes, typical of WireGuard/SOCKS5 tunnels) on a consumer broadband IP (Comcast, AT&T) claiming desktop Ethernet.
Why it matters
This observation provides context for reviewing a session. Assess it alongside other independent evidence and the conditions under which it was collected.
How to interpret the response
Bot-managed browser
The condition described above may appear in an automated or proxied session. It can also have legitimate causes and needs corroboration.
Browser versions, device settings, extensions, accessibility tools, and network conditions can affect results. These examples are illustrative, not a specific visitor record.