the title was because of the nmap message.

It claim that the ping is maybe blocking.

as you can see in the nmap message that I have posted.

---------- Post updated at 07:15 PM ---------- Previous update was at 07:10 PM ----------

well when I do:

Code:

nmap -PN 192.168.1.7

then I get :

Code:

Nmap scan report for new-host-2.home (192.168.1.7)
Host is up (0.0012s latency).
Not shown: 999 filtered ports
PORT   STATE SERVICE
22/tcp open  ssh

Nmap done: 1 IP address (1 host up) scanned in 5.25 seconds

so there is at least one service up there, the SSH.

But something is blocking the nmap ping.

What is it and how can I remove it if I want.

you know I do it for my education.
I want to learn how linux work in networking, that is why I ask you what can block in linux (and more specifically scientific linux) the nmap ping and in what why is it different from the ping that I write in the command line?

---------- Post updated at 07:21 PM ---------- Previous update was at 07:15 PM ----------

I did ifconfig in both.
On what part of the ifconfig do you want me to look?
there both IP start with 192.168.1
only that the guest OS is 192.168.1.7 and the one of the host is 192.168.1.3
there is SSH service on the client.
well I did what you suggest in both the host OS (ubuntu) and the guest OS (scientif linux) and it print nothing.