on a virtual box i installed a debian and make a one virtual manchine and named it to a server1.similarly i make another virtual machine and named it to a server2.both machines have debian installed on it.now i set the ip adress of srver1 as 192.168.10.5 and server2 as a 192.168.10.6.next from server1 i excuate a command ping 192.168.10.6(ip adrees of server2) it does not ping.similarly from server2 i excuate a command ping 192.168.10.5 (ip address of a server1)it also does not ping ? plz help me out why these two machines are not ping to each others ?

Hi,

In the network setting options of the vm's are they set to NAT or BRIDGE?
I normaly set mine to bride and then specify which nnic to use.

Karel

And ping tends to be blocked by default.

i have a mobile-broade band so i set a bridge option in a virtual machine. am i right so ?

what is mean that ping is blocked by default ?

So, you should set up it as bridge and it should works.
The ping is disabled when, using a network interface, you disable the possibility to forward ICMP packet, not allowing the ping.
Keep us up.