TCP SYN (p0f)

4:109+19:0:1440:8192,2:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-08-06 15:22 · last seen 2026-08-06 15:22 · JSON

Decomposed attributes

IP version4
Initial TTL109+19
Options length0
MSS1440
Window size8192
Window scale2
Options layoutmss,nop,ws,nop,nop,sok
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
t13d1516h2_8daaf6152771_e5627efa2ab14

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr11enus_774bc4686a88_000000000000_0000000000003
ge20nr12enus_60f823d07c94_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:220|m,a,s,p2
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p1
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|3:1:0:220|m,a,s,p1

TCP SYN (JA4T)

fingerprintco-occurrences
8192_2-1-3-1-1-4_1440_24

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.364

Country

fingerprintco-occurrences
VE · Venezuela4

Network (ASN)

fingerprintco-occurrences
AS271939 · REDES ELIAS, C.A.4

Cross-transport links

TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).

fingerprintlinked observations
q13d0310h3_55b375c5d22e_cd85d2d889183