// create FTP client instance
var ftp = new Rebex.Net.Ftp();

// connect to a server
ftp.Connect(hostname);

// create FTP client instance
var ftp = new Rebex.Net.Ftp();

// connect to a server using explicit TLS/SSL
// (by default, port 21 is used)
ftp.Connect(hostname, SslMode.Explicit);

// connect to a server using implicit TLS/SSL
// (by default, port 990 is used)
//ftp.Connect(hostname, SslMode.Implicit);

// create FTP client instance
var ftp = new Rebex.Net.Ftp();

// connect to a server on default (not-secured) port 21
ftp.Connect(hostname);

// secure connection
ftp.Secure();

// authenticate securely
ftp.Login(username, password);

// create FTP client instance
var ftp = new Rebex.Net.Ftp();

// connect to a server using Explicit SSL
ftp.Connect(hostname, SslMode.Explicit);

// authenticate securely
ftp.Login(username, password);

// keep data transfers secured
// this is the default mode (it's not necessary to set it)
ftp.SecureTransfers = true;

// revert control connection to unencrypted communication
// anyone e.g. firewall can see commands sent
ftp.ClearCommandChannel();

// create FTP client instance, connect with SSL, log in
// ...

// turn off data transfer encryption
ftp.SecureTransfers = false;

// transfer files
// ...

// create FTP client instance, specify proxy, connect, log in
// ...

// set active mode
ftp.Passive = true;

// set UTF-8 encoding for commands and responses
ftp.Encoding = Encoding.UTF8;

// use large transfer buffers
ftp.Settings.UseLargeBuffers = true;

// disable MLST extension
ftp.EnabledExtensions &= ~FtpExtensions.MachineProcessingList;

// transfer files
// ...

// create FTP client instance
var ftp = new Rebex.Net.Ftp();

// connect to a server
ftp.Connect(hostname);

// display info
Console.WriteLine("Connected to {0}:{1} ({2}).",
    ftp.ServerName, ftp.ServerPort, ftp.GetSystemName());

// authenticate
ftp.Login(username, password);

// display info to the user
Console.WriteLine("Logged on as {0}.", ftp.UserName);

// create FTP client instance
var ftp = new Rebex.Net.Ftp();

// connect to a server
ftp.Connect(hostname, SslMode.Explicit);

// Cipher property contains a lot of information about the current cipher
Console.WriteLine("TLS cipher info: {0}", ftp.TlsSocket.Cipher);

// ServerCertificate property provides access to server certificate
// the first certificate in the chain is the server's certificate
CertificateChain chain = ftp.TlsSocket.ServerCertificate;
Console.WriteLine("Server's certificate info: Subject: {0}, Issuer: {1}",
    chain[0].GetSubject(), chain[0].GetIssuer());

// check connection state
if (!ftp.IsConnected)
{
    // notify the user and return
    return;
}