How to identify encrypted packets?

[Honia A <honia2002 () hotmail com>]

Hi all,

 

I am new to Wireshark and have a CentOS server which is supposed to only accept encrypted network packets 
(HMAC-SHA-256).

To verify that the packets are in fact encrypted, I installed Wireshark on my Windows machine and the way I use it, is 
on collect packets from the CentOS server by running this command on the machine: tethereal -i eth1 -w ~/mycapture.pcap

 

Then, I move the .pcap file to the Windows box via WinSCP and then open the file which automatically opens up Wireshark.

 

My question is how can I find out if the captured packets are encrypted? 

 

I'd appreciate if some one could please help me with this.

 

Thanks,

h




 

                                          
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