[strongSwan] ESP null authentication (behind NAT)

[신충수]

Sefficeware

Hi,

I'm using Strongswan-5.0.1.
When using NAT, IPsec clinets send ESP packet without 'authentication data'. (null authentication)

Client------|
Client------|NAT-----------------------------Server
Client------|

If not use NAT, IPsec clinet sends ESP packet with 'authentication data'.

Client-------------------------------------------Server

I want to send ESP packet with 'authentication data' when using NAT.
Does it possible?

Thanks & Regards,
John.
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