Re: Sebastian - Re: What is blocking my ports?

J Lunis wrote:

OK, tried every NMap line you gave me on several ports. Tried each line
on the IP for my laptop, PDA, and Tivo DVR. Tried each line with the
firewall enabled and disabled. In every case, I received the same
messge >>
"NOTE: Host seems down. If it is really up, but blocking our ping
probes, try -P0 (can't see the rest of this line)."
"NMap finished: 1 IP address (0 hosts up) scanned in 4.813 seconds."
what have I learned?

To read error messages. :-)
Something is blocking the ping (ICMP echo request or its reply). This is
genereally bad, but at least you can circumvent it by adding "-P0" as
parameter.
.

Relevant Pages

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