Linux to Windows ping

ALL,

I have a LAN with the laptops running different OS. Also on Windows up until couple of days ago I was successfully using ZoneAlarm.

However I recently installed MS SQL Server 2012 Express on one of the Windows machine running Windows 8.1 and set it up to accept remote connections. This in turn required to open a port 1433 on that machine, since that is the default poty SQLServer is listening on. Unfortunately this operation is not possible with ZA, so I installed CoMoDo. Next I added all my computers IP in the Trusted Zone of the CoMoDo.

Next I tried to do the following:

busybox telnet 192.168.1.4 1433

That command didn't produce the connection.

So I tried the ping:

ping 192.168.1.4

That resulted in 100% packet loss.

However when I do a reverse ping - from Windows to Linux everything works.

What am I missing? Is there some specific setting in CoMoDo that I need to set to allow traffic? The port is already been open in the CoMoDo firewall - I just need the traffic/communication to be working.

[EDIT]

I just tried to turn off CoMoDo and Windows Firewall and then connect from Linux using "busybox telnet 192.168.1.4 1433". The connection still failed. Which means that I will not be able to connect remotely to my SQL Server 2012.

So how do I see what the problem is?

[/EDIT]

1

1 Answer

Most likely, your Win firewall has ICMP/ping turned off. To enable:

Control Panel --> System and security --> Windows Firewall --> Advanced settings --> Inbound rules --> New rule --> custom rule

Then in Protocol and ports: Protocol: ICMPv4 on the same panel go to customize, choose "Specific ICMP types", check the box "echo request"

Do the "save/enable" dance.

Retry your ping from Linux.

4

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