Re: UDP Port 7 - trying to understand
- From: ibuprofin@xxxxxxxxxxxxxxxxxxxxxx (Moe Trin)
- Date: Fri, 26 May 2006 14:52:20 -0500
On Thu, 25 May 2006, in the Usenet newsgroup comp.security.misc, in article
<4dmhreF1b52elU1@xxxxxxxxxxxxxx>, Sebastian Gottschalk wrote:
Moe Trin wrote:
The "ping" you are used to is the ICMP Type 8 packet, and has
nothing to do with TCP or UDP.
Nitpick: Solaris uses TCP-SYNs for pinging.
Oh, REALLY? That's not quite what the man page indicates. That's also
absolutely NOT what I see on the wire. Have you tried that?
NAME
ping- send ICMP (ICMP6) ECHO_REQUEST packets to network hosts
SYNOPSIS
/usr/sbin/ping host [timeout]
/usr/sbin/ping -s [-l| -U] [-adlLnrRv] [-A addr_family]
[-c traffic_class] [-g gateway [-g gateway...]] [-F flow_label]
[-I interval] [-i interface] [-P tos] [-p port] [-t ttl] host
[data_size] [npackets]
DESCRIPTION
The utility ping utilizes the ICMP (ICMP6 in IPv6) protocol's
ECHO_REQUEST datagram to elicit an ICMP (ICMP6) ECHO_RESPONSE from
the specified host or network gateway.
That a sol-10 box. The -U option (which is _not_ the default) uses UDP,
but UDP is not TCP.
-U
Send UDP packets instead of ICMP (ICMP6) packets. ping sends
UDP packets to consecutive ports expecting to receive back
ICMP (ICMP6) PORT_UNREACHABLE from the target host.
And it defaults to 33434 and incrementing (see the -p option), not port 7.
Are you thinking of 'nisping (1m)'? You may want to re-read that man page
again. Another possible application would be 'arping' or 'hping2' - neither
of which is a standard ping at all,
[compton ~]$ whatis hping2
arping (8) - sends arp and/or ip pings to a given host
hping2 (8) - send (almost) arbitrary TCP/IP packets to network hosts
[compton ~]$
and neither of which are Sun/Solaris applications (although they can be
installed from source).
Old guy
.
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- Re: UDP Port 7 - trying to understand
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