Date: Thu, 21 May 1998 22:20:05 +0200 From: Ollivier Robert <roberto@keltia.freenix.fr> To: Peter Dufault <dufault@hda.com>, hackers@FreeBSD.ORG Subject: Re: Talking UDP at a given port? Message-ID: <19980521222005.A16589@keltia.freenix.fr> In-Reply-To: <199805211655.MAA13751@hda.hda.com>; from Peter Dufault on Thu, May 21, 1998 at 12:55:03PM -0400 References: <199805211655.MAA13751@hda.hda.com>
next in thread | previous in thread | raw e-mail | index | archive | help
According to Peter Dufault:
> I just got a device that talks ASCII at a UDP port. What
> is the way to initially poke at this think without writing a
> program? I can write one but figure I should know this.
Maybe with netcat (in ports), it has a UDP mode:
connect to somewhere: nc [-options] hostname port[s] [ports] ...
listen for inbound: nc -l -p port [-options] [hostname] [port]
options:
-g gateway source-routing hop point[s], up to 8
-G num source-routing pointer: 4, 8, 12, ...
-h this cruft
-i secs delay interval for lines sent, ports scanned
-l listen mode, for inbound connects
-n numeric-only IP addresses, no DNS
-o file hex dump of traffic
-p port local port number
-r randomize local and remote ports
-s addr local source address
-u UDP mode
-v verbose [use twice to be more verbose]
-w secs timeout for connects and final net reads
-z zero-I/O mode [used for scanning]
port numbers can be individual or ranges: lo-hi [inclusive]
--
Ollivier ROBERT -=- FreeBSD: The Power to Serve! -=- roberto@keltia.freenix.fr
FreeBSD keltia.freenix.fr 3.0-CURRENT #60: Fri May 15 21:04:22 CEST 1998
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?19980521222005.A16589>