Simple tunnel protocol with RSA keys, signed digests and blowfish cipher using the OpenSSL library and the tuntap device from the Linux kernel and its API.

Ntunnel use RSA keys, you'll have to create a pair on the server and on every client.

openssl genrsa -out PRIVATE_KEY.pem 1024
openssl rsa -in PRIVATE_KEY.pem -pubout > PUBLIC_KEY.pem

• Save the PRIVATE key and don't share it with anyone.
• If you're running a server, you'll have to share your PUBLIC key with every client.
• If you're running a client, you'll have to share your PUBLIC key with the server owner so he set up a connection for you in that server.

./server/ntunnel conf_server.ini

If you don't know how to configure the server, take a look at the example configuration here

./client/ntunnel conf_client.ini conf1

Where conf1 is the section name holding the configuration in the conf_client.ini file. If you don't know how to configure the client, take a look at the example configuration here