10-14-2009 11:50 AM - edited 02-21-2020 03:44 AM
What is the difference between
icmp permit any echo OUTSIDE and
icmp permit any echo-reply OUTSIDE
...
Which one of the two will stop me from disabling pic to the ASA from outside.
10-14-2009 12:03 PM
Suppose Device A wants to see if it can reach Device B. Device A begins the test process by sending an ICMPv4 Echo message to B. Device B, when it receives the Echo, responds back to Device A with an Echo Reply message. When Device A receives this message, it knows that it is able to communicate (both send and receive) successfully with Device B.
Can you rephrase your 2nd question?
10-16-2009 08:27 AM
So does this mean that i need to allow both echo reply and echo for me to ping the device
10-16-2009 10:48 AM
Echo-reply for sure and if you'll be pinging from the device, you'll need echo as well.
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