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diff --git a/scripts/iax2-brute.nse b/scripts/iax2-brute.nse
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+local brute = require "brute"
+local creds = require "creds"
+local iax2 = require "iax2"
+local shortport = require "shortport"
+
+description = [[
+Performs brute force password auditing against the Asterisk IAX2 protocol.
+Guessing fails when a large number of attempts is made due to the maxcallnumber limit (default 2048).
+In case your getting "ERROR: Too many retries, aborted ..." after a while, this is most likely what's happening.
+In order to avoid this problem try:
+  - reducing the size of your dictionary
+  - use the brute delay option to introduce a delay between guesses
+  - split the guessing up in chunks and wait for a while between them
+]]
+
+---
+-- @usage
+-- nmap -sU -p 4569 <ip> --script iax2-brute
+--
+-- @output
+-- PORT     STATE         SERVICE
+-- 4569/udp open|filtered unknown
+-- | iax2-brute:
+-- |   Accounts
+-- |     1002:password12 - Valid credentials
+-- |   Statistics
+-- |_    Performed 1850 guesses in 2 seconds, average tps: 925
+--
+--
+
+author = "Patrik Karlsson"
+license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
+categories = {"intrusive", "brute"}
+
+
+portrule = shortport.port_or_service(4569, "iax2", {"udp", "tcp"})
+
+Driver = {
+
+  new = function(self, host, port)
+    local o = { host = host, port = port }
+    setmetatable(o, self)
+    self.__index = self
+    return o
+  end,
+
+  connect = function(self)
+    self.helper = iax2.Helper:new(self.host, self.port)
+    return self.helper:connect()
+  end,
+
+  login = function(self, username, password)
+    local status, resp = self.helper:regRelease(username, password)
+    if ( status ) then
+      return true, creds.Account:new( username, password, creds.State.VALID )
+    elseif ( resp == "Release failed" ) then
+      return false, brute.Error:new( "Incorrect password" )
+    else
+      local err = brute.Error:new(resp)
+      err:setRetry(true)
+      return false, err
+    end
+  end,
+
+  disconnect = function(self) return self.helper:close() end,
+}
+
+
+
+
+action = function(host, port)
+  local engine = brute.Engine:new(Driver, host, port)
+  engine.options.script_name = SCRIPT_NAME
+  local status, result = engine:start()
+  return result
+end