TCP SYN (p0f)

4:54+10:0:1420:mss*46,10:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-14 13:17 · last seen 2026-09-05 21:39 · JSON

Decomposed attributes

IP version4
Initial TTL54+10
Options length0
MSS1420
Window sizemss*46
Window scale10
Options layoutmss,sok,ts,nop,ws
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
t13d190900_9dc949149365_97f8aa674fd93
t13d1011h1_61a7ad8aa9b6_3a8073edd8ef1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr040000_209bf58f7e8c_000000000000_0000000000003
ge11nn030000_341eb0d8946c_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
65320_2-4-8-1-3_1420_101

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows; U; Windows XP) Gecko MultiZilla/1.6.1.0a1
Mozilla/5.0 (X11; U; Linux i686; rv:19.0) Gecko/20100101 Slackware/13 Firefox/19.01
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.80 Safari/537.361
crusader-worker/1.01

Country

fingerprintco-occurrences
BE · Belgium3
US · United States1

Network (ASN)

fingerprintco-occurrences
AS396982 · Google LLC4