Vista can't access the Internet and can't ping the problem

Today, a friend mentioned such a problem in the forum. His Vista Ultimate computer can go online and can also quit QQ, regardless of ping intranet or The external network address is unreachable, and all prompts "General failure". However, under Windows XP, everything is fine.
It is indeed strange to go, the network is obviously open, and can only ping the 127.0.0.1 this machine, even his network management 192.169.1.1 can not ping. Why can't I use the Ping command under Windows Vista?
First, the problem encountered by this friend is shown as follows:
C:\\>ping 192.168.1.1
Ping 192.168.1.1 has 32 words Section data:
General failure.
General failure.
General failure.
General failure.
Ping statistics of 192.168.1.1:
Packets: sent = 4, received = 0, lost = 4 (100% lost)
Actually, this problem is still due to the Vista system. Due to the Windows Firewall, you need to enable the icmp incoming and outgoing policies in the Windows Firewall.