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To improve my feeling of security I recently switched my Windows 7 firewall to block all outbound connections. The only thing I can't seem to get to work is ping.exe.
I tried by creating custom rules to allow everything through from cmd.exe to ping.exe (both versions in the system32 and SysWOW64), but I had no luck so far.
Remko
Posted 2012-11-20T11:44:02.010
Reputation: 133
After step (2) you should Select "Specific ICMP types" and select only "Echo Request" to avoid opening up all ICMP types. I edited the answer adding the step (3). – Marco Demaio – 2016-11-25T11:33:56.130
But that would essentially open up my entire outbound connection again. The main reason I set it up this way was to prevent unwanted programs from constantly contacting all kinds of services. – Remko – 2012-11-20T11:57:28.070
No it will only open up ICMP protocol connections. Actually that protocol is almost same as Ping program, no another programs use it. – Hans Chen – 2012-11-20T12:00:53.903
Learned something today. Didn't knew the exact specifications of that protocol. Thanks! – Remko – 2012-11-20T12:08:32.193
You are welcome. Good to hear the solution works. – Hans Chen – 2012-11-20T12:24:12.583