PHP to Remote MYSQL Security Question

[codexx]

Greetings,

 

I am having to pass CC information to a remote database that is being hosted in a clients resort. My web server (A) has to send and receive data from the database on server ©. Mirroring data etc is not possible so my only option is to connect via PHP directly to server C.

 

How secure are the database transmissions though? Everything on the user front end is HTTPS etc, but what about packet sniffing etc on the back end of the database connection?

 

I plan on encrypting all of the fields but its only a matter of hours before a hacker can reverse-encrypt your encryption passphrases.

 

Any links, functions etc would be greatly appreciated.