crackerbox# ./siphon -v -i eth0 -o fingerprints.out

[ The Siphon Project: The Passive Network Mapping Tool ]
[ Copyright (c) 2000 Subterrain Security Group ]

Running on: 'crackerbox' running Linux 2.2.20 on a(n) i386
Using Device: eth0

Host		Port	TTL	DF	Operating System
----------------------------------------------------------------
10.1.100.1	22	252	ON	Solaris 2.6 - 2.7
10.1.100.2	993	63	ON	Linux 2.1.122 - 2.2.14
10.1.100.28	143	61	ON	Linux 2.1.122 - 2.2.14
10.1.100.5	22	64	ON	FreeBSD 2.2.1 - 4.0
10.1.100.21	22	63	ON	40B0
192.168.96.109	22	50	ON	7BFC
192.168.96.109	80	50	ON	7BFC
10.1.100.4	143	64	ON	FreeBSD 2.2.1 - 4.0
10.1.100.24	22	61	ON	Linux 2.1.122 - 2.2.14
10.1.100.20	22	63	ON	FreeBSD 2.2.1 - 4.0
10.1.100.8	22	255	OFF	Solaris 2.6 - 2.7
192.168.147.17	25	242	ON	25BC
10.1.100.9	21	32	ON	Windows NT / Win9x
10.1.100.3	25	128	OFF	Windows NT / Win9x
10.1.100.14	993	64	OFF	OpenBSD 2.x