Self signed certificate for Postman, curl, snow validation

 Postman, curl, snow validation :

curl flag -k (insecure to ingore)

postman: settings -> SSL certification verification

SNOW cant turn off,

to ensure self signed certificate, ensure server certificate has subjectAlternativeName: host:"<IPADDR>" can match server IP

Then ensure curl has 

-cacert fCA.crt for curl

curl --verbose can give detail handshake info

and postman -> settings -> certificate -> CA certificate 

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SNOW will validate server certifiate, subjectAltnerativeName, then rootCA(Java)

SNOW -  no longer need server certificate to be prestored in certificates<if failed, upload>, however, need to store CA(if not known CA)'s cert in system