Why can i get my roommate's MAC address although i can't ping his computer successfully?

C:\Documents and Settings\computer%26gt;arp -a





Interface: 192.168.1.101 --- 0x2


Internet Address Physical Address Type


192.168.1.1 00-xx-xx-xx-3c-xx dynamic








C:\Documents and Settings\computer%26gt;ping 192.168.1.100





Pinging 192.168.1.100 with 32 bytes of data:





Request timed out.


Request timed out.


Request timed out.


Request timed out.





Ping statistics for 192.168.1.100:


Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),





C:\Documents and Settings\computer%26gt;arp -a





Interface: 192.168.1.101 --- 0x2


Internet Address Physical Address Type


192.168.1.1 00-xx-xx-xx-3c-xx dynamic


192.168.1.100 00-xx-85-4e-7c-xx dynamic





C:\Documents and Settings\computer%26gt;


ps. i have changed the mac address in order to protect the privacy.


we're in the same LAN.

Why can i get my roommate's MAC address although i can't ping his computer successfully?
They probably have windows firewall running (or similar). Not responding to ping's is pretty standard firewall behavior. Walk over to his pc and just get the ip address.
Reply:Many of the current firewalls available today will block ping traffic by default...