Successful One way ping

al4629740
al4629740 used Ask the Experts™
on
I have an interesting problem.  From my domain server I am UNABLE to ping one of our clients.  But from the client computer I am able to ping the domain server.  How is it possible that its a one way ping success but not from the other way.  What could be the issues.  I am pinging using the IP address only.  This is a Windows network and the client computer is Windows 10.  I am almost 100% positive that the client is the problem.
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Top Expert 2016

Commented:
ping is a two way process, send and receive the echo request
the client's firewall has not been configured to accept echo request (ping) 2018-09-17_23-21-53.png check the enable checkbox on the client.  Default is to NOT accept icmp 4 echo requests (ping)

Commented:
even u can check by disable the firewall...
Dr. KlahnPrincipal Software Engineer

Commented:
ping and tracert both use ICMP packets.  If you tracert from both systems, it's likely that at some point the tracert will fail and that'll be where the ICMP packets are being dropped.
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Top Expert 2016

Commented:
you may check the list of started services. if 'Server' service is started at your client's computers they can be seen in the network and they should be available for ping as well if firewall allows it.

Sara
David FavorFractional CTO
Distinguished Expert 2018

Commented:
Use Windows MTR to ensure all IPs in your chain are working.

Sometimes IPs drop ICMP packets + MTR still provides a good interface to ICMP (ping/traceroute) data that's easier to debug connection problems at a glance.

If one IP drop 100% of all packets, this is a good starting point.

This trick works a good bit of the time + if many IPs in your chain block ICMP packets, you'll have to start looking at Firewall rules on ever machine in the chain.
Distinguished Expert 2018
Commented:
From my domain server I am UNABLE to ping one of our clients.  But from the client computer I am able to ping the domain server.
Comes right down to firewall rules. Check that client you cannot ping. Most likely, something is blocking or dropping ICMP traffic. Just because you can ping from a system does not mean that you're going to be able to ping it.

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