Nmap Development mailing list archives
Re: ICMP packets on a local subnet?
From: Daniel Miller <bonsaiviking () gmail com>
Date: Mon, 2 Feb 2015 08:11:17 -0600
On Sun, Feb 1, 2015 at 10:46 PM, Mike . <dmciscobgp () hotmail com> wrote:
so help me here. i appologize if this question is dumb. i wanted to throw some packets at my local router and TIVO box, mainly ICMPs to see the response and what got accepted. apparently this cannot be done? even if i suppress the scan option and go directly with a ping scan i keep seeing nmap forcing the ARP attempt to discover. is there a way to supress this to fire off said ICMPs? i am on windows so send-ip is out of the question (doens't work anyway, i tried) here is the output
The option you are looking for is --disable-arp-ping. You can read more here: http://nmap.org/book/man-host-discovery.html
if i use -Pn i get nothing basically. am i doing something wrong or is this just normal network limitations?
Correct, -Pn means "send no host discovery probes" and assumes every target is up.
last question is this. this is more output using the max debug level. i am just curious how in the world it knows USER SET was received if , as you can see, not a single packet was created and sent out????? C:\Users\McKittrick\Desktop>nmap -n -vv -T4 -max-retries 3 -reason -PE -packet-trace 192.168.0.1 -Pn -sn -d9 Nmap scan report for 192.168.0.1 Host is up, received user-set. No data files read. Nmap done: 1 IP address (1 host up) scanned in 0.03 seconds
"user-set" means that the user (you) set the host as "up" by using the -Pn option. The verb "received" is part of a format string that makes more sense when the response type is "syn-ack" or "echo-reply". Dan
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Current thread:
- ICMP packets on a local subnet? Mike . (Feb 01)
- Re: ICMP packets on a local subnet? Daniel Miller (Feb 02)
- Message not available
- Re: ICMP packets on a local subnet? Daniel Miller (Feb 02)
- Message not available
- Re: ICMP packets on a local subnet? Daniel Miller (Feb 02)