TCP SYN (JA4T)

42780_2-4-8-1-3_1380_11

first seen 2026-08-01 08:23 · last seen 2026-08-01 08:23 · JSON

Decomposed attributes

TCP window42780
Option kinds2-4-8-1-3
MSS1380
Window scale11

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
t13d181000_5d04281c6031_78e6aca7449b1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn080000_886c0477bc6e_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:49+15:0:1380:mss*31,11:mss,sok,ts,nop,ws:df,id+:01

User-Agent

fingerprintco-occurrences
PostmanRuntime/7.51.11

Country

fingerprintco-occurrences
CN · China1

Network (ASN)

fingerprintco-occurrences
AS4134 · CHINANET BACKBONE1