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I have 2 computers in my network ones ip address is and the others is When I'm trying to ping from PC-B to PC-A it says:

Pinging with 32 bytes of data:

Reply from Destination host unreachable.

Reply from Destination host unreachable.

Reply from Destination host unreachable.

Reply from Destination host unreachable.

Ping statistics for

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

And when i'm trying the otherwise it tells me same message with ip address switched..They are both can connect to the Internet

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migrated from stackoverflow.com Dec 18 '12 at 11:50

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What's the subnet mask & default gateway on each machine? –  SLaks Dec 17 '12 at 17:25
They both have same subnet mask( and default gateway( –  Roberto Sadfasdf Dec 17 '12 at 17:35
Please ping the router from both machines and confirm that it is successful. Can you ping the other way (from A to B) –  Dave Dec 18 '12 at 11:51
You can check ARP table if the other host is in the network. arp -a will show you MAC addresses and associated IP addresses from the same subnet alongside your router IP and MAC. –  mnmnc Dec 18 '12 at 12:08
Downvote because there is no question in your question. What exactly do you want to know? –  Werner Henze Aug 7 '13 at 11:35

4 Answers 4

You need to enable the firewall to allow that on your operating system. Depending on your setting the ping is blocked on the PC firewall. See this for instructions how to fix it.

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Hell no! Destination unreachable does not equal to Request time out. ICMP is not blocked by the destination host as it never hits it. Look at the IP address that sent 'Destination unreachable' status. It is not the destination IP -> this is not firewall issue. It could be on the originating host but i really doubt that, and it would involve outbound rules not inbound as you are suggesting. –  mnmnc Dec 18 '12 at 12:12

Reconfigure your router and make some settings like this


Wireless Authentication type=WPA-PSK/WPA2-PSK


After this setting delete all Wireless network of router listed in your PC. And than connect, It will works. you can ping your both PC together.

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He didn't say he was using wireless. –  RJFalconer Mar 30 '14 at 19:59

See if ECHO request are enabled ... in Windows pc go to Windows Firewall -> Advanced (check the local are connection) -> Settings - ICMP tab and check allow incoming echo request and in Windows firewall -> Advanced in ICMP go Settings and check Allow incoming echo request ... if its linux try to enable the echo request ... no time to write this how ...ill be back in a moment and edit if you are using linux ...

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There could be many reasons for that error. read the link bellow and maybe you would be able to figure this out... Destination_unreachable

another guess is that pinging may be disabled by your router and the router may just be dropping all ICMP echo packets.

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