TCP SYN (p0f)

4:42+22:0:1460:mss*29,12:mss,nop,nop,sok,nop,ws:df,id+:0

first seen 2026-07-05 18:05 · last seen 2026-07-05 18:05 · JSON

Decomposed attributes

IP version4
Initial TTL42+22
Options length0
MSS1460
Window sizemss*29
Window scale12
Options layoutmss,nop,nop,sok,nop,ws
Quirksdf,id+
Payload class0

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)

fingerprintco-occurrences
t13d1516h1_8daaf6152771_1a63afa7c4781

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn13enus_9db22d02e17a_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
42340_2-1-1-4-1-3_1460_121

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
CN · China1

Network (ASN)

fingerprintco-occurrences
AS23724 · IDC, China Telecommunications Corporation1