Added delay/jitter to ftpbounce scan

modules/auxiliary/scanner/portscan/ftpbounce.rb

@@ -27,6 +27,8 @@ class Metasploit3 < Msf::Auxiliary
       OptString.new('PORTS', [true, "Ports to scan (e.g. 22-25,80,110-900)", "1-10000"]),
       OptAddress.new('BOUNCEHOST', [true, "FTP relay host"]),
       OptPort.new('BOUNCEPORT', [true, "FTP relay port", 21])
+      OptInt.new('DELAY', [true, "The delay between connections, per thread, in milliseconds", 0]),
+      OptInt.new('JITTER', [true, "The delay jitter factor (maximum value by which to +/- DELAY) in milliseconds.", 0]),
     ])
 
     deregister_options('RHOST', 'RPORT')
@@ -47,11 +49,20 @@ class Metasploit3 < Msf::Auxiliary
 
   def run_host(ip)
     ports = Rex::Socket.portspec_crack(datastore['PORTS'])
-
     if ports.empty?
       raise Msf::OptionValidateError.new(['PORTS'])
     end
 
+    jitter_value = datastore['JITTER'].to_i
+    if jitter_value<0 
+      raise Msf::OptionValidateError.new(['JITTER'])
+    end 
+
+    delay_value = datastore['DELAY'].to_i
+    if delay_value<0 
+      raise Msf::OptionValidateError.new(['DELAY'])
+    end
+
     return if not connect_login
 
     ports.each do |port|
@@ -64,8 +75,11 @@ class Metasploit3 < Msf::Auxiliary
       end
 
       begin
-        host = (ip.split('.') + [port / 256, port % 256]).join(',')
 
+        # Add the delay based on JITTER and DELAY if needs be
+        add_delay_jitter(delay_value,jitter_value)
+
+        host = (ip.split('.') + [port / 256, port % 256]).join(',')
         resp = send_cmd(["PORT", host])
 
         if resp =~ /^5/