TCP SYN (p0f)

4:113+15:0:1240:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0

first seen 2026-09-20 20:41 · last seen 2026-09-20 20:41 · JSON

Decomposed attributes

IP version4
Initial TTL113+15
Options length0
MSS1240
Window sizemss*44
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
Quirksdf,id+,ecn
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
t13d221100_231e334592e8_36bf25f296df1

HTTP request (JA4H)

fingerprintco-occurrences
he11nn040000_e1d2031bdfea_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1240_81

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.361

Country

fingerprintco-occurrences
DE · Germany1

Network (ASN)

fingerprintco-occurrences
AS205397 · 69HOST LLC1