OS X Built in FTP client lockdown

Does anyone know how to lockdown the built in FTP feature in Snow Leopard?

andres666 wrote:
Sorry about that yes.
I was asked to look into how I can remove or prevent users from using the built in FTP capability os OS X.
The "built in FTP capability" is implemented with the executable file /usr/bin/ftp. You could delete that file, but instead I'd recommend changing its permissions settings to that it's no longer executable. That could be done with this command in a terminal session:
sudo chmod 444 usr/bin/ftp

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    import java.net.Socket;
    import java.net.InetAddress;
    import java.io.*;
    import java.io.File;
    import java.util.*;
    import java.lang.*;
    import java.lang.Object;
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    import java.util.regex.*;
    import javax.crypto.spec.PBEKeySpec;
    import javax.crypto.spec.PBEParameterSpec;
    import java.security.spec.AlgorithmParameterSpec;
    import java.security.spec.KeySpec;
    import java.io.InputStream;
    import java.io.IOException;
    import java.io.OutputStream;
    import java.io.File.*;
    import java.nio.channels.FileLock;
    public class  FTPClient {
         public static void main(String[] args) throws Exception
              Timer timer = new Timer("Test Timer");
              timer.scheduleAtFixedRate(new TimerTask()
                   private int counter = 0;
                                            public void run() {
                                                                     try     {                                                                                
                                                                              System.out.println(counter++);
                                                                               Socket soc=new Socket("xxx.x.x.xx",5217);
                                                                               System.out.println("Socket Initialised.");          
                                                                               transferfileClient t=new transferfileClient(soc);
                                                                               t.SendFile();
                                                                               System.out.println("run complete.");                                                                           
                                                                          catch(Exception ex)
                                                           }, 10000, 40000);
         static class transferfileClient
         Socket ClientSoc;
         DataInputStream din;
         DataOutputStream dout;
         BufferedReader br;
         transferfileClient(Socket soc)
              try
                   ClientSoc=soc;
                   din=new DataInputStream(ClientSoc.getInputStream());
                   dout=new DataOutputStream(ClientSoc.getOutputStream());
                   br=new BufferedReader(new InputStreamReader(System.in));
              catch(Exception ex)
         //encrypto routine starts
    class DesEncrypter {
           Cipher ecipher;
            Cipher dcipher;   
            // 8-byte Salt
            byte[] salt = {
                (byte)0xA9, (byte)0x9B, (byte)0xC8, (byte)0x32,
                (byte)0x56, (byte)0x35, (byte)0xE3, (byte)0x03
            // Iteration count
            int iterationCount = 19;   
            DesEncrypter(String passPhrase) {
                try {
                             // Create the key
                             KeySpec keySpec = new PBEKeySpec(passPhrase.toCharArray(), salt, iterationCount);
                             SecretKey key = SecretKeyFactory.getInstance(
                             "PBEWithMD5AndDES").generateSecret(keySpec);
                             ecipher = Cipher.getInstance(key.getAlgorithm());
                             dcipher = Cipher.getInstance(key.getAlgorithm());   
                             // Prepare the parameter to the ciphers
                             AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, iterationCount);   
                             // Create the ciphers
                             ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
                             dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
                } catch (java.security.InvalidAlgorithmParameterException e) {
                } catch (java.security.spec.InvalidKeySpecException e) {
                } catch (javax.crypto.NoSuchPaddingException e) {
                } catch (java.security.NoSuchAlgorithmException e) {
                } catch (java.security.InvalidKeyException e) {
            // Buffer used to transport the bytes from one stream to another
            byte[] buf = new byte[1024];   
            public void encrypt(InputStream in, OutputStream out) {
                try {
                    // Bytes written to out will be encrypted
                    out = new CipherOutputStream(out, ecipher);   
                    // Read in the cleartext bytes and write to out to encrypt
                    int numRead = 0;
                    while ((numRead = in.read(buf)) >= 0) {
                        out.write(buf, 0, numRead);
                    out.close();
                } catch (java.io.IOException e) {
            public void decrypt(InputStream in, OutputStream out) {
                try {
                    // Bytes read from in will be decrypted
                    in = new CipherInputStream(in, dcipher);   
                    // Read in the decrypted bytes and write the cleartext to out
                    int numRead = 0;
                    while ((numRead = in.read(buf)) >= 0) {
                        out.write(buf, 0, numRead);
                    out.close();
                } catch (java.io.IOException e) {
    }     //encryptor routine ends     
         void SendFile() throws Exception
                   try
                   String directoryName; 
                   // File object referring to the directory.
                   String[] files;        // Array of file names in the directory.        
                   //directory = new File ( "C:\\FTP\\" ) ; 
                   File directory1 = new File("C:\\FTP");
                        boolean successmk = directory1.mkdir();
                        if (!successmk) {
                             // Directory creation failed /Already Exists
                        File directory = new File("C:\\FTP\\ftpc");
                        boolean successmk1 = directory.mkdir();
                        if (!successmk1) {
                             // Directory creation failed /Already Exists
                   //directory = new File ( "E:\\FTP-encrypted" ) ;           
                if (directory.isDirectory() == false) {
                    if (directory.exists() == false)
                       System.out.println("There is no such directory!");
                    else
                      System.out.println("That file is not a directory.");
                else {
                    files = directory.list();
                    System.out.println("Files in directory \"" + directory + "\":");
                    for (int i = 0; i < files.length; i++)
                             String patternStr = "xml";
                             Pattern pattern = Pattern.compile(patternStr);
                             Matcher matcher = pattern.matcher(files);
                             boolean matchFound = matcher.find();
                                       if (matchFound) {                                   
                                       System.out.println(" " + files[i]);                                        
                                       String filename;
                                       filename=files[i];                                   
                                       File f=new File(directory,filename);
                                       FileLock lock = null;                                   
                                       FileOutputStream fos = new FileOutputStream(f, true);
                                       lock = fos.getChannel().tryLock();
                                                 if (lock == null) {
                                                 System.out.println(" Failed to get the file lock: means that the file is locked by other instance.");
                                                 fos.close();
                                                 else
                                                                     InetAddress addr = InetAddress.getLocalHost();                                                                      
                                                                               // Get IP Address
                                                                               //byte[] ipAddr = addr.getAddress();
                                                                               String ip= addr.toString();                                                                      
                                                                               // Get hostname
                                                                               //String hostname = addr.getHostName();
                                       System.out.println(" Lock Acquired.");
                                       lock.release();
                                       fos.close();
                                       dout.writeUTF("SEND");
                                            dout.writeUTF(ip);
                                       dout.writeUTF(filename);
              //String msgFromServer=din.readUTF();          
    DesEncrypter encrypter = new DesEncrypter("My Pass Phrase!");
    // Encrypt
              FileInputStream fino=new FileInputStream(f);
              encrypter.encrypt(fino,
    new FileOutputStream("ciphertext.txt"));               
              fino.close();
              FileInputStream fin=new FileInputStream("ciphertext.txt");          
              int ch;
              do
                   ch=fin.read();
                   dout.writeUTF(String.valueOf(ch));
              while(ch!=-1);
              fin.close();          
              String option;
                        option=din.readUTF();
                             if((option.compareTo("Delete")==0))     
                                  boolean success = (new File("ciphertext.txt")).delete();
                                  boolean success1 = f.delete();
                                  if (success) {
                                  System.out.println("File Sent ...");
                                  if (success1) {
                                  System.out.println("--File deleted from Client ...");
         for (int j = 0; j < 999999999; j++){}
                                       }//pattermatch loop ends here
    else
                             { //System.out.println("   " + "Not an XML file-------->" +files[i]);
    for (int jb = 0; jb < 111999999; jb++){}
              }// for loop ends here for files in directory
                   }//else loop ends for directory files listing               
         System.out.println("sendfile finished...");
         return;
         }               catch(Exception ex)          {ex.printStackTrace();}                    
         }//sendfile ends here     
         public void displayMenu() throws Exception
                   System.out.println(" Send File");                    
                        SendFile();
                        return;          
    And here is the server code...
    import java.net.*;
    import java.io.*;
    import java.util.*;
    import java.util.Date;
    import java.text.SimpleDateFormat;
    import java.text.DateFormat;
    import java.text.Format;
    import java.lang.Object;
    import java.lang.*;
    import javax.crypto.*;
    import javax.crypto.spec.PBEKeySpec;
    import javax.crypto.spec.PBEParameterSpec;
    import java.security.spec.AlgorithmParameterSpec;
    import java.security.spec.KeySpec;
    public class FTPServer
    {     public static void main(String args[]) throws Exception
         {     ServerSocket soc=new ServerSocket(5217);
              System.out.println("FTP Server Started on Port Number 5217");
              while(true)
                   System.out.println("Waiting for Connection ...");
                   transferfile t=new transferfile(soc.accept());               
    class transferfile extends Thread
         Socket ClientSoc;
         DataInputStream din;
         DataOutputStream dout;     
         transferfile(Socket soc)
         {     try
              {     ClientSoc=soc;                              
                   din=new DataInputStream(ClientSoc.getInputStream());
                   dout=new DataOutputStream(ClientSoc.getOutputStream());
                   System.out.println("FTP Client Connected ...");
                   System.out.println("External IP of Client ..." + ClientSoc.getInetAddress());
                   //System.out.println("FTP Client Connected ..." + ClientSoc.getRemoteSocketAddress());
                   start();               
              catch(Exception ex)
    //encrypto routine starts
    class DesEncrypter {
            Cipher ecipher;
            Cipher dcipher;   
            // 8-byte Salt
            byte[] salt = {
                (byte)0xA9, (byte)0x9B, (byte)0xC8, (byte)0x32,
                (byte)0x56, (byte)0x35, (byte)0xE3, (byte)0x03 };   
            // Iteration count
            int iterationCount = 19;   
           DesEncrypter(String passPhrase) {
                try {
                    // Create the key
                    KeySpec keySpec = new PBEKeySpec(passPhrase.toCharArray(), salt, iterationCount);
                    SecretKey key = SecretKeyFactory.getInstance(
                        "PBEWithMD5AndDES").generateSecret(keySpec);
                    ecipher = Cipher.getInstance(key.getAlgorithm());
                    dcipher = Cipher.getInstance(key.getAlgorithm());   
                    // Prepare the parameter to the ciphers
                    AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, iterationCount);   
                    // Create the ciphers
                    ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
                    dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
                } catch (java.security.InvalidAlgorithmParameterException e) {
                } catch (java.security.spec.InvalidKeySpecException e) {
                } catch (javax.crypto.NoSuchPaddingException e) {
                } catch (java.security.NoSuchAlgorithmException e) {
                } catch (java.security.InvalidKeyException e) {
            // Buffer used to transport the bytes from one stream to another
            byte[] buf = new byte[1024];   
            public void encrypt(InputStream in, OutputStream out) {
                try {
                    // Bytes written to out will be encrypted
                    out = new CipherOutputStream(out, ecipher);   
                    // Read in the cleartext bytes and write to out to encrypt
                    int numRead = 0;
                    while ((numRead = in.read(buf)) >= 0) {
                        out.write(buf, 0, numRead);
                    out.close();
                } catch (java.io.IOException e) {
            public void decrypt(InputStream in, OutputStream out) {
                try {
                    // Bytes read from in will be decrypted
                    in = new CipherInputStream(in, dcipher);   
                    // Read in the decrypted bytes and write the cleartext to out
                    int numRead = 0;
                    while ((numRead = in.read(buf)) >= 0) {
                        out.write(buf, 0, numRead);
                        //added later on
                        in.close();                    
                    out.close();
                } catch (java.io.IOException e) {
    }     //encryptor routine ends
    //not implemented right now as we arent using the ftp server to download stuff...can be activated later on if we want
         void SendFile() throws Exception
              String filename=din.readUTF();
              File f=new File(filename);
              if(!f.exists())
                   dout.writeUTF("File Not Found");
                   return;
              else
              {     dout.writeUTF("READY");
                   FileInputStream fin=new FileInputStream(f);
                   int ch;
                   do
                        ch=fin.read();
                        dout.writeUTF(String.valueOf(ch));
                   while(ch!=-1);     
                   fin.close();     
                   dout.writeUTF("File Received Successfully");                                   
         String Compare(String filename) throws Exception
                        ///dout.writeUTF("entering compare");
                        String dateTempString=new String();
                        Date dateValue=new Date();
                        SimpleDateFormat formatter = new SimpleDateFormat ("hhmmss");
                        dateTempString = formatter.format(dateValue);
                        File dir1 = new File("C:\\FTPnew");
                        boolean success2 = dir1.mkdir();
                        if (!success2) {
                             // Directory creation failed /Already Exists
                        File dir = new File("C:\\FTPnew\\server");
                        boolean success = dir.mkdir();
                        if (!success) {
                             // Directory creation failed /Already Exists
                        File ftemp=new File(dir,dateTempString + filename);
                        File fnewtemp=new File(dir,"new-enc-"+filename);
                        // Create encrypter/decrypter class
                        DesEncrypter encrypter = new DesEncrypter("My Pass Phrase!");
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                        int ch;
                        String temp;
                        do
                        {     temp=din.readUTF();
                             ch=Integer.parseInt(temp);
                             if(ch!=-1)
                                  fout.write(ch);                         
                        }while(ch!=-1);
                        fout.close();
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                    encrypter.decrypt(new FileInputStream(fnewtemp),
                    new FileOutputStream(ftemp));
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              System.out.println("\tRequest Coming from Internal IP Address : "+ ip);
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                        if (!success22) {
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                        boolean success21 = dir.mkdir();
                        if (!success21) {
                             // Directory creation failed /Already Exists
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                   //dout.writeUTF(compvalue);
                   if(compvalue.compareTo("hello")==0)
                        //dout.writeUTF("Transfer Completed");
                        return;
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              else
                   //dout.writeUTF("SendFile");
                    option="Y";
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    Perhaps this will help...
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    I'm lost. Everything else works. SSH2 using PuTTY works, Skype works, webbrowsing works.
    What could be prohibiting all those FTP clients from initiating a connection?! For MobyExplorer I even tried all of its four "connection modes" that they have for "buggy firmwares". Doesn't make a difference at all.
    Also: Those apps never ask for an Access Point on the E72, even if the AP is configured to do so.
    I have no idea what to do...  Any advice would be appreciated! Maybe it's just some strange configuration issue..
    Thanks.

    k-lite is a free codec that makes windows media player 11 work and it has its own player.
    T430u, x301, x200T, x61T, x61, x32, x41T, x40, U160, ThinkPad Tablet 1838-22R, Z500 touch, Yoga Tab 2 Windows 8.1, Yoga Tablet 3 Pro
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