TCP SYN (p0f)

4:111+17:0:1400:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0

first seen 2026-08-03 20:40 · last seen 2026-08-03 20:40 · JSON

Decomposed attributes

IP version4
Initial TTL111+17
Options length0
MSS1400
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
t13d1812h1_85036bcba153_b26ce05bbdd62

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr15enus_21d8bfafe465_000000000000_0000000000001
ge11nn16enus_0613a574f975_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1400_82

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
CH · Switzerland2

Network (ASN)

fingerprintco-occurrences
AS402253 · SKN Subnet & Telecom Ltd2