Is Pro*C/C++ communication secured?

I need to know if Pr开发者_如何转开发o*C/C++ (Oracle database connectivity for C/C++) communication is secured. Is it TCP/IP with plaintext? maybe some encryption (shared key?). Secured Tunnel of some sort?

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It looks like if you want an encrypted channel between your Pro*C client and the Oracle database server you'll need to use Oracle Advanced Security.

http://download.oracle.com/docs/cd/B19306_01/network.102/b14268/asointro.htm

In the end it is really less to do with Pro*C as it is the SQLNET configuration that is used, since the right SQLNET setup could encrypt the data from SQL*PLUS or anything else that uses it.