TCP SYN (p0f)

4:41+23:0:1460:mss*44,10:mss,sok,ts,nop,ws::0

first seen 2026-08-22 01:57 · last seen 2026-08-22 04:20 · JSON

Decomposed attributes

IP version4
Initial TTL41+23
Options length0
MSS1460
Window sizemss*44
Window scale10
Options layoutmss,sok,ts,nop,ws
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
t13d1712h1_ab0a1bf427ad_8e6e362c5eac4

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn10engb_ec5486a7d5a7_000000000000_0000000000003
ge11nn050000_be0d0b335e46_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_104

User-Agent

fingerprintco-occurrences
uk-nhs-data/0.0 (internal fraud-research)4

Country

fingerprintco-occurrences
GB · United Kingdom4

Network (ASN)

fingerprintco-occurrences
AS8468 · ENTANET International Limited4