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Re: nmap vs. ping



On Thursday 10 February 2005 21.36, Rüdiger Noack wrote:
> Moin
> 
> Bin mal wieder ratlos. :-( Hat jemand eine Idee bezüglich der 
> unterschiedlichen Antworten von ping und nmap?
> 
> ----------------------------  snip  --------------------------
> erno@flinker:~$ ping notebook
> PING w2lap160 (192.168.10.70) 56(84) bytes of data.
> 64 bytes from w2lap160 (192.168.10.70): icmp_seq=1 ttl=64 time=0.481 ms
> 64 bytes from w2lap160 (192.168.10.70): icmp_seq=2 ttl=64 time=0.464 ms
> 
> --- w2lap160 ping statistics ---
> 2 packets transmitted, 2 received, 0% packet loss, time 1000ms
> rtt min/avg/max/mdev = 0.464/0.472/0.481/0.023 ms
> erno@flinker:~$ nmap notebook
> 
> Starting nmap 3.75 ( http://www.insecure.org/nmap/ ) at 2005-02-10 21:28 CET
> Note: Host seems down. If it is really up, but blocking our ping probes, 
> try -P0
> Nmap run completed -- 1 IP address (0 hosts up) scanned in 4.039 seconds
> ----------------------------  snip  --------------------------

Hallo

ping macht nur eine ICMP Probe, nmap schickt zusätzlich ein TCP-ACK
Packet an Port 80. Vielleicht mag dein Ziel das nicht, und macht dann zu.

Gruss

-- 
BOFH excuse #359:

YOU HAVE AN I/O ERROR -> Incompetent Operator error



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