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Cisco Spark & Windows Firewall Executable

matthric
Cisco Employee
Cisco Employee

Hello,

I have Spark setup and working - I am tweaking the Windows Firewall and the behavious is odd.

1. If I block all outbound connections then Spark is obviously blocked

2. If I allow any program to communicate on TCP 443, 33434 then Spark can connect and communicate

spark ports.PNG

3. If I then restrict this rule by executable (we don't want to allow any program to communicate outbound on 443 & 33434) to path '%USERPROFILE%\AppData\Local\Cisco\Cisco Spark\Spark.exe' then Spark doesnt work...

spark executable.PNG

I checked to see what executable was making the outbound connection using 'netstat -b' and looking in task manager and it is the correct path.

So: what executable is actually doing the outbound communication?

Kind Regards

Matthew

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