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LAN trouble

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11 replies

by bblaha

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I am experiencing some strange results on a small office LAN.

I can ping 127.0.0.1 successfully.
I can ping localhost successfully.
I can ping the IP address of my machine successfully.
I can ping the DHCP/DNS/Default Gateway using the IP address.
I can ping the DHCP/DNS/Default Gateway using its name on the network.
I can ping the primary WINS server using the IP address.
I can ping the WINS server using its name on the network.
I can ping every printer on the LAN.
I can ping several workstations on the LAN.
There are at least three workstations on the LAN that I CANNOT ping via both the IP address and their name on the network. All three machines are on, and have Internet access via the Default gateway.

Intel PRO/1000 MT Network with latest driver installed.
S/W Firewall disabled (Bitdefender AntiVirus Plus V10.)
Windows XP Professional Firewall enabled
Any ideas?

11 replies

by bblaha

I just updated my post. Windows XP professional firewall is enabled. Bitdefender Antivirus V10 firewall is disabled.

by pser

confirmed the cabling/ports for connectivity?

Can these machines ping anything?

Start with the machines and work your way backwards ...

And stop calling you Shirley!

by bblaha

Shirley as I can be all the machines I cannot ping are on, connected to the Internet, and to other machines on the network. I have not pinged my machine from each of them as employees are using the machines.

by pser

Nick Burns .... MOVE!!!! How can you trouble shoot this issue if the users can not relieve their machines for a moment or two?

You got it right though, ping from them back to you, gateway, etc. ping both by name and address.

Sounds like you know "which end is up" and there is a vast amount of knowledge on this site. So, I am gonna leave you in good hands 'cause my day is DONE!!!

Much luck to ya!

edit: etc

by jdclyde

After all, that is EXACTLY what a firewall SHOULD be doing.

Turn off the firewall. If it works, you will know to add and exception for the local lan.

by bblaha

The Windows firewall is set by group policy. I have confirmed that a reverse ping is also unsuccessful.

by jdclyde

Have you tried to disable the firewall through the gp for a test?

Check to make sure their isn't something in the GP that would also prevent pings.

by bblaha

Thanks robo_dev! I thought Windows XP firewall was configured by group policy for all machines. However, it looks like some exceptions have been set on individual machines. Unless I run into an application issue, I think I'm gonna leave this one alone.

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