.\" Copyright (c) 2000-2001 Nik Weidenbacher nikw@martnet.com
.\" Portions Copyright (c) 2001 Dmitry Morozovsky marck@rinet.ru
.\"
.\"
.\" 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.
.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"	This product includes software developed by the University of
.\"	California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\"    may be used to endorse or promote products derived from this software
.\"    without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
.\"
.\" $Id$
.\"
.Dd Aug 04, 2001
.Dt EHNT 1
.\" .Os BSD 4.4
.Sh NAME
.Nm ehnt
.Nd Extreme Happy Netflow Tool. Client part
.Sh SYNOPSIS
.Nm
.Op Fl 0 Ar ASN
.Op Fl a Ar ASN
.Op Fl b
.Op Fl c Ar count
.Op Fl i Ar mins
.Op Fl m Ar mode
.Op Fl n Ar intidx
.Op Fl p Ar port
.Op Fl P Ar proto
.Op Fl r Ar addr
.Op Fl s Ar server:port
.Op Fl x Ar prefix
.Sh DESCRIPTION
The
.Nm
command starts
.Xr ehnt 1
client which connects to
.Xr ehntserv 8
server and converts raw flow of NetFlow version 5 packets into
somewhat human-readable (or machine-readable) form.
.Pp
The options are as follows:
.Bl -tag -width ".Fl n Ar intidx"
.It Fl 0 Ar ASN
Replace AS number 0 occurences with this AS number
.It Fl a Ar ASN
Only display flows to/from this AS number
.It Fl b
Display big flows (only shows flows with the most bytes
or packets received so far)
.It Fl c Ar count
Exit after <count> flows are received
.It Fl i Ar mins
How long to wait between report generations (in minutes)
.It Fl m Ar mode
The name of the mode of operation to use: 
.Cm dump 
displays flow detail;
.Cm shortdump
shows flow details in a more compact fashion;
.Cm top
generates reports of top average utilization
.It Fl n Ar intidx
Specify the interface by SNMP ifIndex number
.It Fl p Ar port
Only display flows to/from this tcp or udp port number
.It Fl P Ar proto
Only display flows using this IP protocol number
.It Fl r Ar addr
Only display flows reported by this router IP address
.It Fl s Ar server:port
The hostname or IP address and port number of the 
.Xr ehntserv 8
.It Fl x Ar prefix
Only display flows to/from this IP prefix. The format for <prefix>
is 'address/length', for example 1.2.3.4/30 or 127.0.0.0/8.
.El
.Sh FILES
.Bl -tag -width /usr/local/share/ehnt/asnc.txt -compact
.It Pa /usr/local/share/ehnt/asnc.txt
Autonomous Systems Number-to-Name Convertion table
.El
.Sh SEE ALSO
.Xr ehntserv 8
.Sh AUTHORS
.An Nik Weidenbacher Aq nikw@martnet.com
.An Dmitry Morozovsky Aq marck@rinet.ru