Can't ping another
computer because of the ICF
Sometimes, XP's built-in Firewall may enable after running network setup wizard on LAN connections. You can't ping or access the XP computer. To disable the XP firewall on the connection, go to the properties of the Connections, select Advanced, and deselect the firewall.
If you can't ping outside IP, make sure you have correct gateway. If you can't ping outside computer name or web name, check the DNS settings.
If you cannot use ping successfully at any point, confirm that:
1)The computer was restarted after TCP/IP was configured.
Symptoms: When using ping command, you may receive either of the following: "Transmit failed, error code 65" or "Transmit failed, error code 10050"
Resolutions: make sure your firewall, NAT or router doesn't disable ping and to allow ICMP Echo and Echo Reply packets.
Symptom: when you try to ping an IP, you may receive "hardware error" reply.
Causes: 1. Bad NIC.
Q: When I ping the server using one of the clients it says the host is
Symptom: when you ping a LAN computer like ping chicagotechpc1, you may receive a public ip 220.127.116.11 instead of the computer private IP 192.168.1.100.
Cause: Incorrect DNS settings. Also please refer to this link:
Symptoms: when you ping a public IP, you may
receive reply from a different IP, for example,
Causes: If you have incorrect IPSec settings, you may have above mentioned symptom.