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eemoon
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Why PC cannot ping ASA

Hi It is strange that the PC cannot ping the ASA. The topology is like this ASA(inside)---DeviceA----PC. the ASA can ping PC and DeviceA, but PC cannot ping ASA. When PC ping ASA, we can see message of debug icmp(debug icmp track 255 in the ASA) from the PC. The DeviceA can also ping both ASA and PC. I check the ASA config, which does not any limit to icmp. Capture show the ASA can receive message, but did not send any message to the PC. Anyone can give some suggestion ? Thank you
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eemoon

8/22/2022 - Mon
SOLUTION
lacayoa

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eemoon

ASKER
Thank you so much for your fast reply. I used to do the same thing without any configuration. Maybe something is wrong.

Do you think which one should be used in the following two groups commands
I am using them,  but they are still not working

1
icmp permit any echo inside
icmp permit any echo-reply inside

2
access-list icmp extended permit ip any 172.33.1.0 255.255.255.0 (172.33.1.3 255.255.255.248 is asa inside ip)
access-group icmp in interface inside
SOLUTION
lacayoa

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eemoon

ASKER
Thank you for your reply. I added these three lines. But everything is the same as before.
If traffic goes from high security level to low level and then come back, we need the inspect. In the present case, the traffic just reach inside interface, i do not think we need it.
SOLUTION
Jody Lemoine

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ASKER CERTIFIED SOLUTION
Pete Long

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eemoon

ASKER
Thank you all for your reply. Now I already solved it. The DeviceA contains several devices, one of them is Palo. After config it, it can work.
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