TCP SYN (p0f)

4:117+11:0:1412:65535,8:mss,nop,ws,sok,ts:df,id+:0

first seen 2026-06-28 15:23 · last seen 2026-06-28 15:23 · JSON

Inconsistencies

User-Agents observed with this fingerprint that contradict what it proves at the wire. all inconsistencies →

fingerprint User-Agent claims wire shows confidence seen first seen last seen

4:117+11:0:1412:65535,8:mss,nop,ws,sok,ts:df,id+:0

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7; …

User-Agent claims macOS

TCP SYN initial TTL 117+11 indicates Windows

The initial TTL is set by the sending kernel (64 on Unix-like systems, 128 on Windows) and survives NAT. But VPNs, proxies and tunnels legitimately replace the sending stack, so this check never exceeds medium confidence.

Full User-Agent	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7; arm64) AppleWebKit/537.36 (KHTML, like Gecko) Safari/14.0.0.0 Safari/537.36
Observed TTL	117+11 (observed + path distance → initial)
Claimed OS	macOS
Confidence	low — single sighting of an environmental signal

low

2026-06-28

Decomposed attributes

IP version	`4`
Initial TTL	`117+11`
Options length	`0`
MSS	`1412`
Window size	`65535`
Window scale	`8`
Options layout	`mss,nop,ws,sok,ts`
Quirks	`df,id+`
Payload class	`0`

Co-observed signals

Signals from other families seen in the same observation. A fingerprint spread thinly across many lower-layer signatures is a classic inconsistency signal.

TLS ClientHello (JA4)

fingerprint	co-occurrences
`t13d201200_2b729b4bf6f3_e24568c0d440`	1

HTTP request (JA4H)

fingerprint	co-occurrences
`po11nn07enus_554f362c121c_000000000000_000000000000`	1

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7; arm64) AppleWebKit/537.36 (KHTML, like Gecko) Safari/14.0.0.0 Safari/537.36`	1

Country

fingerprint	co-occurrences
`PH` · Philippines	1

Network (ASN)

fingerprint	co-occurrences
`AS9299` · Philippine Long Distance Telephone Company	1