how do i encrypt outgoing packets?

Question

thanks

Answer 1

"how do i encrypt outgoing packets?"

Your question is really too vague, UDP or TCP? What connection oriented protocol? What are you attempting to do? What application is going to decrypt the packets on the receiving end? What kind of encryption scheme?....

These are just some of the questions, that would need to be answered, to give you any type of applicable answer.

One of the more common forms of packet encryption is Virtual Private Networking.

OpenVPN for example;

"OpenVPN -- An application to securely tunnel IP networks
over a single UDP port, with support for SSL/TLS-based session authentication and key exchange, packet encryption, packet authentication, and packet compression."

Setting up a VPN connection is far beyond the scope of a couple of paragraphs in Yahoo Answers.
If you were asking about something else, you will need include more specific information pertaining to what you are trying to accomplish.

Hope that provides a little insight , Good Luck.