It seems that the Endpoint Security VPN (I have the Checkpoint client but the Symantec is also culpable) mingles around and blocks any incoming connections and any PING echo requests.

So the solution is to kill the agent:

Copy to clipboard sudo launchctl unload /Library/LaunchDaemons/com.checkpoint.epc.service.plist sudo kextunload /Library/Extensions/cpfw.kext and turn the AutoLaunch off by setting the RunAtLoad and KeepAlive PLIST values to false:

Copy to clipboard sudo nano /Library/LaunchDaemons/com.checkpoint.epc.service.plist I have a script that can be used here:

https://gist.github.com/cyupa/ebb2a80a699d4c2f567b78161cb28767

It seems that the Endpoint Security VPN (I have the Checkpoint client but the Symantec is also culpable) mingles around and blocks any incoming connections and any PING echo requests.

So the solution is to kill the agent:

sudo launchctl unload /Library/LaunchDaemons/com.checkpoint.epc.service.plist
sudo kextunload /Library/Extensions/cpfw.kext

and turn the AutoLaunch off by setting the RunAtLoad and KeepAlive PLIST values to false:

sudo nano /Library/LaunchDaemons/com.checkpoint.epc.service.plist

I have a script that can be used here:

https://gist.github.com/cyupa/ebb2a80a699d4c2f567b78161cb28767