TCP SYN (p0f)

4:116+12:0:1400:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-08-17 11:24 · last seen 2026-08-17 11:24 · JSON

Distinct clients per day (last 30 days, peak 1/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

IP version4
Initial TTL116+12
Options length0
MSS1400
Window sizemss*44
Window scale8
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
t12d190800_d83cc789557e_7af1ed941c261

HTTP request (JA4H)

fingerprintco-occurrences
po11nn07enus_7d361e250c48_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1400_81

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; x64) AppleWebKit/537.36 (KHTML, like Gecko) Firefox/81.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
TN · Tunisia1

Network (ASN)

fingerprintco-occurrences
AS37705 · TOPNET1