mirror of
https://git.FreeBSD.org/ports.git
synced 2024-10-31 21:57:12 +00:00
88 lines
3.1 KiB
Groff
88 lines
3.1 KiB
Groff
.\"
|
|
.\" Copyright (c) 1998 David E. O'Brien
|
|
.\"
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
|
|
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.\" .TH NMAP 1L local
|
|
.Dd August 4, 1998
|
|
.Dt NMAP 1
|
|
.Os BSD
|
|
.Sh NAME
|
|
.Nm nmap
|
|
.Nd network port scanner
|
|
.Sh SYNOPSIS
|
|
.Nm nmap
|
|
.Op Ar options
|
|
.Ar hostname
|
|
.Op Ar /mask
|
|
.Sh DESCRIPTION
|
|
.Nm
|
|
is a utility for port scanning large networks, although it works fine for
|
|
single hosts. The guiding philosophy for the creation of
|
|
.Nm
|
|
was TMTOWTDI (There's More Than One Way To Do It). This is the Perl slogan, but
|
|
it is equally applicable to scanners. Sometimes you need speed, other times you
|
|
may need stealth. In some cases, bypassing firewalls may be required. Not to
|
|
mention the fact that you may want to scan different protocols (UDP, TCP, ICMP,
|
|
etc.). You just can't do all this with one scanning mode. And you don't want to
|
|
have 10 different scanners around, all with different interfaces and
|
|
capabilities. Thus
|
|
.Nm
|
|
incorporats virtually every scanning technique known.
|
|
Specifically,
|
|
.Nm
|
|
supports:
|
|
|
|
Vanilla TCP connect() scanning,
|
|
TCP SYN (half open) scanning,
|
|
TCP FIN (stealth) scanning,
|
|
TCP ftp proxy (bounce attack) scanning
|
|
SYN/FIN scanning using IP fragments (bypasses packet filters),
|
|
UDP recvfrom() scanning,
|
|
UDP raw ICMP port unreachable scanning,
|
|
ICMP scanning (ping-sweep), and
|
|
Reverse-ident scanning.
|
|
|
|
.Nm
|
|
also supports a number of performance and reliability features such as dynamic
|
|
delay time calculations, packet timeout and retransmission, parallel port
|
|
scanning, detection of down hosts via parallel pings, and flexible target and
|
|
port specification.
|
|
.Sh FILES
|
|
none.
|
|
.Sh SEE ALSO
|
|
.Xr mscan 1L ,
|
|
.Xr nc 1L ,
|
|
.Xr scrobe 1L
|
|
.Sh DIAGNOSTICS
|
|
none.
|
|
.Sh BUGS
|
|
none known.
|
|
.Sh AUTHORS
|
|
This man page has been written by David O'Brien (obrien@cs.ucdavis.edu)
|
|
.\" .Sh HISTORY
|
|
.\" .Nm
|
|
.\" appeared in FreeBSD 3.0.
|