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Cant ping computer on home network

By MGothelf ·
I have a home LAN with router, cable modem and 3 computers. One is a (new) laptop connected wirelessly. In windows explorer, each computer can see the others, but Computer 1 (DesktopA win xp pro) can ping computer 2(Laptop win xp pro ) and Computer 3(OLD PC win 2k), but computer 2 and computer can not ping the Desktop, and 2 and 3 can ping each other.

All have similar ipconfig:

DESKTOP IP CONFIG
IP Address. . . . . . . . . . . . : 192.168.0.5
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.0.1

LAPTOP IP CONFIG
IP Address. . . . . . . . . . . . : 192.168.0.7
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.0.1

OLD COMPUTER IP CONFIG
IP Address. . . . . . . . . . . . : 192.168.0.4
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.0.1

I have removed windows firewall, virus checking, etc. but nothing has changed.

Is there some setting in Desktop that would prevent being ping-ed? Is there some software (TCPIP) that might be corrupted and need to be reinstalled?

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by josh In reply to Cant ping computer on hom ...

Questions:
On the XP machines, are they no SP, SP1, or SP2?

How did you "remove" the windows firewall?

Are you absolutely positive that your machines does not have a Third party firewall, or a firewall bundled WITH the AV?

What is the response you get from your pings? Most likely "Request Timed Out" but just have to ask that.

Are all the machines able to surf the internet and ping the router? Have you attempted to disable the firewall in the router (if it is enabled)?

The only reason I ask is the fact that BOTH computer 2 and 3 can't ping computer 1 but can each other, and 1 can ping 2 and 3. So the only pings that get blocked are only going to computer 1.
Also I have seen in the past where Windows firewall even "Disabled" would still block pings because the service itself is still starting with the machine. Try completely disabling this service in the services.msc
To do this:
Go to Start>Run and type services.msc and press enter.
Then scroll down to Windows Firewall/ICS, if the service is started then stop it, and try your pings again. If the pings work then that was your problem, at that point just disable to Windows firewall from starting (by double clicking the service, and changing the startup from Auto to Disabled or Manual) with the machine.
Hope that helps, please post back!

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by MGothelf In reply to

Poster rated this answer.
I discovered that CISCO VPN client installs a firewall which is active even when the VPN client is not in use. I unchecked the firewall option on the VPN client, rebooted and it worked fine.

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by dbucyk In reply to Cant ping computer on hom ...

No, lots of people have it right. Since your machines have a 192 address from your router, then you can ping everybody.

Do you have Norton Internet Security Installed. I worked on two XP pro computers wirelessly and had the same problem where the address were getting through.

If there is Norton Internet Security, disable the firewall in it and you should be fine.

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by dbucyk In reply to Cant ping computer on hom ...

No, lots of people have it right. Since your machines have a 192 address from your router, then you can ping everybody.

Do you have Norton Internet Security Installed. I worked on two XP pro computers wirelessly and had the same problem where the address were getting through.

If there is Norton Internet Security, disable the firewall in it and you should be fine.

Collapse -

by dbucyk In reply to Cant ping computer on hom ...

No, lots of people have it right. Since your machines have a 192 address from your router, then you can ping everybody.

Do you have Norton Internet Security Installed. I worked on two XP pro computers wirelessly and had the same problem where the address were getting through.

If there is Norton Internet Security, disable the firewall in it and you should be fine.

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by MGothelf In reply to Cant ping computer on hom ...

This question was closed by the author

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