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I connected my laptop to my modem through WLAN and connected my PC to the modem by LAN.

The IP address of my laptop is 192.168.1.3.
The IP address of my PC is 192.168.1.4.

I am able to ping my default gateway from both the hosts. The default gateway is my modem and the IP is 192.168.1.1.

But the ping from my laptop to PC and vice versa fails. Why?

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migrated from stackoverflow.com Sep 24 '11 at 9:31

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1 Answer

up vote 2 down vote accepted

ping may be failing due to a firewall on your PC. Windows Firewall in its default setting does not respond to ICMP requests. Turn firewall OFF temporarily and try again.

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