diff --git a/config.py b/config.py
new file mode 100644
index 0000000..6357dc8
--- /dev/null
+++ b/config.py
@@ -0,0 +1,7 @@
+#modules selection
+config = {
+"parser" : "Parser",
+"address_generator" : "IpGenerator",
+"scanner" : "CoreModel",
+"storage" : "JSONStorage"
+}
diff --git a/core/MainPresenter.py b/core/MainPresenter.py
new file mode 100644
index 0000000..339f989
--- /dev/null
+++ b/core/MainPresenter.py
@@ -0,0 +1,125 @@
+from core import import_utils
+from core.communication.ConvertTable import ConvertTable
+from threading import RLock
+import datetime
+from PyQt5.Qt import QThread, pyqtSignal
+from PyQt5.QtCore import QObject, pyqtSlot
+from config import config
+from inspect import isfunction
+CoreModel = import_utils.import_class("modules/network_scan/%s.py" %
+config["scanner"])
+Parser = import_utils.import_class("modules/address_generation/%s.py" %
+config["parser"])
+IpGenerator = import_utils.import_class(
+"modules/address_generation/%s.py" %
+config["address_generator"]
+)
+JSONStorage = import_utils.import_class("modules/storage/%s.py" %
+config["storage"])
+
+
+class MainPresenter:
+    def __init__(self, ui):
+        self.ui = ui
+        self.threads = []
+        self.isScanEnabled = False
+        self.convert_table = ConvertTable()
+        for func in import_utils.import_matching(
+            "modules/convert_functions/",
+            lambda name, value:
+                isfunction(value) and hasattr(value, "__from__")
+        ):
+            self.convert_table.add_function(func)
+        self.parser = Parser()
+        #needed config to specify path
+        self.storage = JSONStorage("results.json")
+        self.exit_lock = RLock()
+
+    def startScan(self, ipRanges, portsStr, threadNumber, timeout):
+        timeout = 3 if not timeout else int(timeout)
+        addresses = self.parser.parse_address_field(ipRanges)
+        ports = self.parser.parse_port_field(portsStr)
+        self.ip_generator = IpGenerator(addresses, ports, self.convert_table)
+        self.scanner = CoreModel(timeout)
+        threadNumber = int(threadNumber)
+        for i in range(threadNumber):
+            scan_worker = ScanWorker(
+                self.ip_generator,
+                self.scanner,
+                self.storage
+                )
+            scan_thread = QThread()
+            scan_worker.log_signal.connect(self.log_text)
+            scan_worker.moveToThread(scan_thread)
+            scan_worker.exit_signal.connect(scan_thread.exit)
+            scan_worker.exit_signal.connect(self.on_worker_exit)
+            scan_thread.started.connect(scan_worker.work)
+            self.threads.append((scan_worker, scan_thread))
+        self.changeThreadLabel(threadNumber)
+        for thread in self.threads:
+            scan_worker, scan_thread = thread
+            scan_thread.start()
+
+    def changeThreadLabel(self, number_of_threads):
+        self.number_of_threads = number_of_threads
+        self.ui.currentThreadsLabel.setText(str(number_of_threads))
+
+    def on_worker_exit(self):
+        self.changeThreadLabel(self.number_of_threads - 1)
+        with self.exit_lock:
+            for num, thread in enumerate(self.threads):
+                    scan_worker, scan_thread = thread
+                    if not scan_worker.isRunning:
+                        self.threads.pop(num)
+                        break
+        if self.number_of_threads == 0:
+            self.on_end_scanning()
+
+    def on_end_scanning(self):
+            self.isScanEnabled = False
+            self.ui.startButton.setText("Start")
+            self.storage.save()
+
+    def stopScan(self):
+        while self.threads:
+            scan_worker, scan_thread = self.threads[0]
+            if scan_worker.isRunning:
+                scan_worker.stop()
+
+    def log_text(self, string):
+        self.ui.dataText.append("[" + str(datetime.datetime.now()) + "] " + str(string))
+
+
+class ScanWorker(QObject):
+
+    log_signal = pyqtSignal(str)
+    exit_signal = pyqtSignal()
+
+    def __init__(self, ip_generator, scanner, storage, **kwargs):
+        super().__init__()
+        self.ip_generator = ip_generator
+        self.storage = storage
+        self.scanner = scanner
+        self.previous_address = None
+        self.isRunning = True
+
+    @pyqtSlot()
+    def work(self):
+        while self.isRunning:
+            scan_address = self.ip_generator.get_next_address(self.previous_address)
+            if not scan_address:
+                break
+            self.previous_address = scan_address
+            scan_result = self.scanner.scan_address(scan_address)
+            self.storage.put_responce(scan_address, scan_result)
+            string_scan_address = " ".join(key + ":" + str(scan_address[key]) for
+            key in scan_address.keys()) 
+            if scan_result == 0:
+                self.log_signal.emit('%s is open' % string_scan_address)
+            else:
+                self.log_signal.emit('%s is closed' % string_scan_address)
+        self.stop()
+
+    def stop(self):
+        self.isRunning = False
+        self.exit_signal.emit()
diff --git a/core/__init__.py b/core/__init__.py
new file mode 100644
index 0000000..d98799d
--- /dev/null
+++ b/core/__init__.py
@@ -0,0 +1,6 @@
+import sys
+import os
+
+
+fil = __file__[:__file__.rindex(os.sep)]
+sys.path.insert(0,fil)
diff --git a/core/communication/CommunicationDictionary.py b/core/communication/CommunicationDictionary.py
new file mode 100644
index 0000000..638858f
--- /dev/null
+++ b/core/communication/CommunicationDictionary.py
@@ -0,0 +1,22 @@
+class CommunicationDictionary(dict):
+    '''This class is used to provide communication between classes using
+    key-value interface'''
+    def __init__(self, convert_table):
+        '''Convert table stores functions used to get value of unable key if
+        it's possible'''
+        super(CommunicationDictionary, self).__init__()
+        self.convert_table = convert_table
+
+    def __getitem__(self, key):
+        item = None
+        try:
+            item = dict.__getitem__(self,key)
+        except KeyError:
+            key_to_convert, convert_function = self.convert_table.get_converter(
+                self.keys(),
+                key
+            )
+            if key_to_convert is not None:
+                item = convert_function(dict.__getitem__(self,key_to_convert))
+
+        return item
diff --git a/core/communication/ConvertTable.py b/core/communication/ConvertTable.py
new file mode 100644
index 0000000..741b5d2
--- /dev/null
+++ b/core/communication/ConvertTable.py
@@ -0,0 +1,31 @@
+def convert_function(_from, _to):
+    '''This decorator is simple way to declare ability of function to be
+    converter from name _from to name _to in convert table'''
+    def real_decorator(function):
+        function.__from__ = _from
+        function.__to__ = _to
+        return function
+    return real_decorator
+
+
+class ConvertTable():
+    '''The class is used to store and find the right function to convert value from
+    one key to another'''
+    def __init__(self):
+        self.convert_functions = []
+
+    def add_function(self, function):
+        '''Here you can add function to ConvertTable.'''
+        #TODO: make this method produce new functions, that will be able to
+        #create converter chains
+        print("adding function", function)
+        self.convert_functions.append(function)
+
+    def get_converter(self, from_keys, to_key):
+        '''This function returns converter function, that can convert one key
+        to another'''
+        for function in self.convert_functions:
+            if function.__from__ in from_keys and function.__to__ == to_key:
+                return function.__from__, function
+        print("Can't find converter!")
+        return None, None
diff --git a/core/import_utils.py b/core/import_utils.py
new file mode 100644
index 0000000..7329f13
--- /dev/null
+++ b/core/import_utils.py
@@ -0,0 +1,55 @@
+import importlib
+from glob import glob
+from os import extsep
+from os.path import realpath, dirname, join, basename, splitext
+import sys
+from inspect import getmembers, isfunction, isclass
+
+
+def module_paths_list(path):
+    return glob(join(path, "*" + extsep + "py"))
+
+
+def modulename(file_path):
+    return splitext(basename(file_path))[0]
+
+
+def module_name_list(path):
+    return [modulename(module_path) for module_path in
+    module_paths_list(path)]
+
+
+def import_module(path):
+    if dirname(path) not in sys.path:
+        sys.path.insert(0, dirname(path))
+    name = modulename(path)
+    module_spec = importlib.util.spec_from_file_location(name, path)
+    module = importlib.util.module_from_spec(module_spec)
+    module_spec.loader.exec_module(module)
+    return module
+
+
+def import_class(path):
+    return getattr(import_module(path), modulename(path))
+
+
+def import_matching(path, matcher_function):
+    matching = []
+    for modulefile in module_paths_list(path):
+        module = import_module(modulefile)
+        for name, value in getmembers(module):
+            if matcher_function(name, value):
+                matching.append(value)
+    return matching
+
+
+def import_functions(path):
+    def matcher(name, value):
+        return isfunction(value)
+    return import_matching(path, matcher)
+
+
+def import_classes(path):
+    def matcher(name, value):
+        return isclass(value)
+    return import_matching(path, matcher)
diff --git a/main.py b/main.py
index 455abd3..92179ff 100644
--- a/main.py
+++ b/main.py
@@ -4,7 +4,7 @@ from PyQt5.QtCore import *
 from PyQt5.QtWidgets import *
 from PyQt5.QtGui import *
 from main_ui import *
-import MainPresenter
+import core.MainPresenter
 
 
 class MyWin(QtWidgets.QMainWindow):
@@ -14,7 +14,7 @@ class MyWin(QtWidgets.QMainWindow):
 
         self.ui = Ui_Form()
         self.ui.setupUi(self)
-        self.presenter = MainPresenter.MainPresenter(self.ui)
+        self.presenter = core.MainPresenter.MainPresenter(self.ui)
         self.ui.startButton.clicked.connect(self.startButtonClicked)
         self.isScanActive = False
 
diff --git a/modules/RawTCP.py b/modules/RawTCP.py
new file mode 100644
index 0000000..b7aadd7
--- /dev/null
+++ b/modules/RawTCP.py
@@ -0,0 +1,98 @@
+from struct import pack, unpack
+import socket
+
+
+class TCPHeader():
+    # TCP header class. Thanks to Silver Moon for the flags calculation and packing order
+    # This was designed to be re-used. You might want to randomize the seq number
+    # get_struct performs packing based on if you have a valid checksum or not
+    def __init__(self, src_port=47123, dst_port=80, seqnum=1000, acknum=0, data_offset=80, fin=0, syn=1, rst=0, psh=0, ack=0, urg=0, window=5840, check=0, urg_ptr=0):
+        # !=network(big-endian), H=short(2), L=long(4),B=char(1)
+        self.order = "!HHLLBBHHH"
+        self.src_port = src_port
+        self.dst_port = dst_port
+        self.seqnum = seqnum
+        self.acknum = acknum
+        # size of tcp header; size is specified by 4-byte words; This is 80
+        # decimal, which is 0x50, which is 20bytes (5words*4bytes).
+        self.data_offset = data_offset
+        self.fin = fin
+        self.syn = syn
+        self.rst = rst
+        self.psh = psh
+        self.ack = ack
+        self.urg = urg
+        self.window = socket.htons(window)
+        self.check = check
+        self.urg_ptr = urg_ptr
+
+    def flags(self):
+        return self.fin + (self.syn << 1) + (self.rst << 2) + (self.psh << 3) + (self.ack << 4) + (self.urg << 5)
+
+    def get_struct(self, check=False, checksummed=False):
+        if check is not False:
+            self.check = check
+        if checksummed:
+            return pack('!HHLLBBH', self.src_port, self.dst_port, self.seqnum, self.acknum, self.data_offset, self.flags(), self.window) + pack('H', self.check) + pack('!H', self.urg_ptr)
+        else:
+            return pack(self.order, self.src_port, self.dst_port, self.seqnum, self.acknum, self.data_offset, self.flags(), self.window, self.check, self.urg_ptr)
+
+
+def checksum(msg):
+    # Shoutout to Silver Moon @ binarytides for this checksum algo.
+    sum = 0
+    for i in range(0, len(msg), 2):
+        w = msg[i] + (msg[i + 1] << 8)
+        sum = sum + w
+
+    sum = (sum >> 16) + (sum & 0xffff)
+    sum = sum + (sum >> 16)
+    sum = ~sum & 0xffff
+    return sum
+
+
+def tcp_checksum(source_ip, dest_ip, tcp_header, user_data=b''):
+    # Calculates the correct checksum for the tcp header
+    tcp_length = len(tcp_header) + len(user_data)
+    # This is an IP header w/ TCP as protocol.
+    ip_header = pack('!4s4sBBH', socket.inet_aton(source_ip), socket.inet_aton(
+        dest_ip), 0, socket.IPPROTO_TCP, tcp_length)
+    # Assemble the packet (IP Header + TCP Header + data, and then send it to
+    # checksum function)
+    packet = ip_header + tcp_header + user_data
+    return checksum(packet)
+
+
+def handle_packet(raw_packet):
+    # Now we need to unpack the packet. It will be an IP/TCP packet
+    # We are looking for SYN-ACKs from our SYN scan
+    # Fields to check: IP - src addr; TCP - src port, flags
+    # We want to pull out and compare only these three
+    # Heres the math for unpacking: B=1, H=2, L=4, 4s=4  (those are bytes)
+    packet = raw_packet[0]
+    # This is the IP header, not including any self.options OR THE DST ADDR.
+    # Normal length is 20!! Im parsing as little as possible
+    ip_header = unpack('!BBHHHBBH4s', packet[0:16])
+    # If there are any self.options, the length of the IP header will be >20. We
+    # dont care about self.options
+    ip_header_length = (ip_header[0] & 0xf) * 4
+    # This is the source address (position 8, or the first "4s" in our
+    # unpack)
+    src_addr = socket.inet_ntoa(ip_header[8])
+
+    # We had to get the proper IP Header length to find the TCP header
+    # offset.
+    tcp_header_raw = packet[ip_header_length:ip_header_length + 14]
+    # TCP header structure is pretty straight-forward. We want PORTS and
+    # FLAGS, so we partial unpack it
+    tcp_header = unpack('!HHLLBB', tcp_header_raw)
+
+    src_port = tcp_header[0]  # self-explanatory
+    dst_port = tcp_header[1]  # self-explanatory FIXME: notused
+    # We only care about syn-ack, which will be 18 (0x12)
+    flag = tcp_header[5]
+
+    if flag == 18:
+        return (src_addr, src_port)
+    else:
+        return None
diff --git a/modules/TCPScan.py b/modules/TCPScan.py
new file mode 100644
index 0000000..dd77e13
--- /dev/null
+++ b/modules/TCPScan.py
@@ -0,0 +1,89 @@
+from RawTCP import TCPHeader, handle_packet, tcp_checksum
+import socket
+import sys
+
+
+class TCPScanner:
+    def __init__(self):
+        self.source_ips = {}
+        # TODO: options, threading, input/output queues
+        self.options = None
+        return
+
+    def in_scope(self):
+        """Check that IP is in scanning scope"""
+        # TODO
+        pass
+
+    def tcp_listener(self):
+        # Raw socket listener for when send_raw_syn() is used. This will catch
+        # return SYN-ACKs
+        listen = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_TCP)
+        while True:
+            # packet = ('E \x00(\x1f\xaa@\x00w\x06\x99w2\xe0\xc8\xa2\xa2\xf3\xac\x18\xdf\xb3\x00\x16\xb6\x80\xc1\xa0/\xa6=$P\x10\xce\xab\xd1\xe4\x00\x00', ('50.XXX.200.162', 0))
+            raw_packet = listen.recvfrom(65565)
+            ret = handle_packet(raw_packet)
+            if ret is None:
+                continue
+            src_addr, src_port = ret
+            if self.in_scope(src_addr) and src_port in self.ports:
+                self.output_queue.put((src_addr, src_port))
+
+    def send_raw_syn(self, dest_ip, dst_port):
+        # Use raw sockets to send a SYN packet.
+        # If you want, you could use the IP header assembled in the tcp_checksum
+        # function to have a fully custom TCP/IP stack
+        try:
+            # Using IPPROTO_TCP so the kernel will deal with the IP packet for us.
+            # Change to IPPROTO_IP if you want control of IP header as well
+            s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_TCP)
+        except Exception:
+            sys.stderr.write("Error creating socket in send_raw_syn\n")
+            return
+        if self.options.source == "auto":
+            # This gets the correct source IP. Just in case of multiple interfaces,
+            # it will pick the right one
+            src_addr = self.get_source_ip(dest_ip)
+        else:
+            src_addr = self.options.source
+        src_port = 54321
+        make_tcpheader = TCPHeader(src_port, dst_port)
+        tcp_header = make_tcpheader.get_struct()
+        packet = make_tcpheader.get_struct(check=tcp_checksum(
+            src_addr, dest_ip, tcp_header), checksummed=True)
+        try:
+            s.sendto(packet, (dest_ip, 0))
+        except Exception as e:
+            sys.stderr.write("Error utilizing raw socket in send_raw_syn: {}\n".format(e))
+
+    def get_source_ip(self, dst_addr):
+        # Credit: 131264/alexander from stackoverflow. This gets the correct IP for sending. Useful if you have multiple interfaces
+        # NOTE: This will send an additional packet for every single IP to confirm
+        # the route. (but just one packet)
+        try:
+            if dst_addr in self.source_ips:
+                return self.source_ips[dst_addr]
+            else:
+                self.source_ips[dst_addr] = [(s.connect((dst_addr, 53)), s.getsockname()[0], s.close(
+                )) for s in [socket.socket(socket.AF_INET, socket.SOCK_DGRAM)]][0][1]
+                return self.source_ips[dst_addr]
+        except Exception:
+            sys.stderr.write(
+                "Something went wrong in get_source_ip, results might be wrong\n")
+
+
+def send_full_connect_syn(ip, port, timeout):
+    # Normal scan using socket to connect. Does 3-way handshack, then graceful
+    # teardown using FIN
+    try:
+        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        s.settimeout(timeout)
+    except Exception as e:
+        sys.stderr.write("Error creating socket in send_full_connect_syn: {}\n".format(e))
+        return False
+    try:
+        s.connect((ip, port))
+        return True
+        s.close()
+    except Exception:
+        return False
diff --git a/modules/address_generation/AbstractAddressGenerator.py b/modules/address_generation/AbstractAddressGenerator.py
new file mode 100644
index 0000000..ece05f2
--- /dev/null
+++ b/modules/address_generation/AbstractAddressGenerator.py
@@ -0,0 +1,15 @@
+from abc import abstractmethod, ABC
+from core.communication import CommunicationDictionary
+
+
+class AbstractAddressGenerator(ABC):
+    '''The class describes addess generation mechanism.
+    In __init__ method it should get results of parsing fields
+    and then it returns addresses.'''
+    @abstractmethod
+    def get_next_address(self, previous_address, **kwargs) -> CommunicationDictionary:
+        '''Address - an only, indivisible object, that describes single scan
+        target address. This method should return next address to scan based on
+        previous scanned address and result of scanning previous address, that
+        can be placed in kwargs.'''
+        pass
diff --git a/modules/address_generation/AbstractParser.py b/modules/address_generation/AbstractParser.py
new file mode 100644
index 0000000..1e02bdc
--- /dev/null
+++ b/modules/address_generation/AbstractParser.py
@@ -0,0 +1,16 @@
+from abc import ABC, abstractmethod
+
+
+class AbstractParser(ABC):
+    '''The class describes fields parsing mechanisms'''
+
+    @abstractmethod
+    def parse_address_field(self, field):
+        '''In address field can be plased any text, describing address of
+        scanning target'''
+        pass
+
+    @abstractmethod
+    def parse_port_field(self, field):
+        '''In port field only numbers, whitespaces, comma and '-' allowed'''
+        pass
diff --git a/modules/address_generation/IpGenerator.py b/modules/address_generation/IpGenerator.py
new file mode 100644
index 0000000..2623bf9
--- /dev/null
+++ b/modules/address_generation/IpGenerator.py
@@ -0,0 +1,32 @@
+from AbstractAddressGenerator import AbstractAddressGenerator
+from threading import RLock
+from core.communication.CommunicationDictionary import CommunicationDictionary
+
+class IpGenerator(AbstractAddressGenerator):
+
+    def __init__(self, ip_generator, ports, convert_table):
+        self.convert_table = convert_table
+        self.ip_generator = ip_generator
+        self.ports = ports
+        self.lock = RLock()
+
+    def get_next_port_number(self, previous_port):
+        return (self.ports.index(previous_port) + 1) % len(self.ports)
+
+    def get_next_address(self, previous_address):
+        result = CommunicationDictionary(self.convert_table)
+        with self.lock:
+            portnum = 0
+            next_ip = None
+            if previous_address:
+                next_ip = previous_address["ipv4"]
+                port = previous_address["port"]
+                portnum = self.get_next_port_number(port)
+            if (portnum == 0):
+                try:
+                    next_ip = next(self.ip_generator)
+                except StopIteration:
+                    return None
+            result["ipv4"] = next_ip
+            result["port"] = self.ports[portnum]
+            return result
diff --git a/modules/address_generation/Parser.py b/modules/address_generation/Parser.py
new file mode 100644
index 0000000..bf1a079
--- /dev/null
+++ b/modules/address_generation/Parser.py
@@ -0,0 +1,80 @@
+import ipaddress
+from AbstractParser import AbstractParser
+
+
+class Parser(AbstractParser):
+
+    def parse_port_field(self, ports):
+        """
+        Parses ports from string, returns them as integers in the list.
+        Handles non-existent ports and non-port values.
+        """
+        if ports:
+            # Using set to avoid repetitions
+            parsed = set()
+            ports = ports.split(",")
+            for port in ports:
+                try:
+                    # Input is in range form ("100-200"):
+                    if '-' in port:
+                        start, end = map(int, port.split('-'))
+                        parsed.update(
+                            [p for p in range(start, end + 1) if 65355 >= p > 0])
+                    # Input is a single port ("80"):
+                    else:
+                        parsed.add(int(port))
+                except ValueError as e:
+                    # If we get any not integer just ignore it
+                    pass
+            return sorted(list(parsed))
+        else:
+            # Change to default ports from constant
+            return [21, 22, 23, 25, 80, 443, 110, 111, 135, 139, 445, 8080, 8443, 53, 143, 989, 990, 3306, 1080, 5554, 6667, 2222, 4444, 666, 6666, 1337, 2020, 31337]
+
+    def parse_address_field(self, ips):
+        """
+        Parses ip input string, returns the generator over them.
+
+        Supports next inputs:
+            1) 1.2.3.4
+            2) 192.168.0.0/24
+            3) 1.2.3.4 - 5.6.7.8
+        Any non-ip value will be ignored.
+        """
+
+        # A set to contain non repeating ip objects from ipaddress
+        ip_objects = set()
+        inputs = [ip.strip() for ip in ips.split(',')]
+
+        for input_ in inputs:
+            try:
+                # Input is in range form ("1.2.3.4 - 5.6.7.8"):
+                if '-' in input_:
+                    input_ips = input_.split('-')
+                    ranges = set(
+                    ipaddress.summarize_address_range(
+                        *map(lambda x: ipaddress.IPv4Address(x.strip()), input_ips)
+                        )
+                    )
+                    ip_objects.update(ranges)
+                # Input is in CIDR form ("192.168.0.0/24"):
+                elif '/' in input_:
+                    network = ipaddress.ip_network(input_)
+                    ip_objects.add(network)
+                # Input is a single ip ("1.1.1.1"):
+                else:
+                    ip = ipaddress.ip_address(input_)
+                    ip_objects.add(ip)
+            except ValueError as e:
+                print(e)
+                # If we get any non-ip value just ignore it
+                pass
+
+        for ip_obj in ip_objects:
+            # The object is just one ip, simply yield it:
+            if isinstance(ip_obj, ipaddress.IPv4Address):
+                yield ip_obj
+            # The object is a network, yield every host in it:
+            else:
+                for host in ip_obj:
+                    yield host
diff --git a/modules/address_generation/__init__.py b/modules/address_generation/__init__.py
new file mode 100644
index 0000000..d98799d
--- /dev/null
+++ b/modules/address_generation/__init__.py
@@ -0,0 +1,6 @@
+import sys
+import os
+
+
+fil = __file__[:__file__.rindex(os.sep)]
+sys.path.insert(0,fil)
diff --git a/modules/address_generation/test_IpGenerator.py b/modules/address_generation/test_IpGenerator.py
new file mode 100644
index 0000000..2979b4d
--- /dev/null
+++ b/modules/address_generation/test_IpGenerator.py
@@ -0,0 +1,27 @@
+from unittest import TestCase, main
+from ipaddress import IPv4Address
+from IpGenerator import IpGenerator
+from Parser import Parser
+
+
+class testIpGenerator(TestCase):
+
+    def setUp(self):
+        p = Parser()
+        self.ipgen = IpGenerator(
+        p.parse_address_field("192.168.1.1 - 192.168.1.10"), [80, 90])
+
+    def testIpGeneration(self):
+        '''self.assertEqual(
+            self.ipgen.get_next_address(None),
+            ("192.168.1.1", 80))'''
+        previous_address = None
+        a = True
+        while previous_address or a:
+             previous_address=self.ipgen.get_next_address(previous_address)
+             a = False
+        self.assertEqual(self.ipgen.get_next_address(None), None)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/modules/address_generation/test_Parser.py b/modules/address_generation/test_Parser.py
new file mode 100644
index 0000000..9ca9456
--- /dev/null
+++ b/modules/address_generation/test_Parser.py
@@ -0,0 +1,37 @@
+from unittest import main, TestCase
+from Parser import Parser
+import ipaddress
+
+
+class TestParser(TestCase):
+
+    def setUp(self):
+        self.parser = Parser()
+
+    def test_port_parsing(self):
+        self.assertEqual(self.parser.parse_port_field("80,90"), [80, 90])
+
+    def test_ip_parsing(self):
+        self.assertEqual(
+            set(self.parser.parse_address_field("192.168.1.1 - 192.168.1.3")),
+            {ipaddress.IPv4Address(ip) for ip in
+                [
+                "192.168.1.1",
+                "192.168.1.2",
+                "192.168.1.3"
+                ]})
+        self.assertEqual(
+            set(self.parser.parse_address_field("192.168.1.1")),
+            {ipaddress.IPv4Address("192.168.1.1")}
+            )
+        self.assertEqual(
+            set(self.parser.parse_address_field("192.168.1.0/31")),
+            {ipaddress.IPv4Address(ip) for ip in
+                [
+                '192.168.1.1',
+                '192.168.1.0'
+                ]})
+
+
+if __name__ == "__main__":
+    main()
diff --git a/modules/convert_functions/Ipv4toString.py b/modules/convert_functions/Ipv4toString.py
new file mode 100644
index 0000000..dc55801
--- /dev/null
+++ b/modules/convert_functions/Ipv4toString.py
@@ -0,0 +1,5 @@
+from core.communication.ConvertTable import convert_function
+
+@convert_function("ipv4","str")
+def ipv4tostring(ip):
+    return str(ip)
diff --git a/modules/network_scan/AbstractScanner.py b/modules/network_scan/AbstractScanner.py
new file mode 100644
index 0000000..8e59b25
--- /dev/null
+++ b/modules/network_scan/AbstractScanner.py
@@ -0,0 +1,17 @@
+from abc import ABC, abstractmethod
+from core.communication.CommunicationDictionary import CommunicationDictionary
+
+class AbstractScanner(ABC):
+    '''The class is used by one thread to scan targets'''
+
+    @abstractmethod
+    def __init__(self, **kwargs):
+        '''In this method you can init some
+        reusable resources needed for scan'''
+        pass
+
+    @abstractmethod
+    def scan_address(self, address) -> CommunicationDictionary:
+        '''This method should contain scanning process of given address. All
+    items returned will be passed to AbstractStorage and ui'''
+        pass
diff --git a/modules/network_scan/CoreModel.py b/modules/network_scan/CoreModel.py
new file mode 100644
index 0000000..fa7613e
--- /dev/null
+++ b/modules/network_scan/CoreModel.py
@@ -0,0 +1,17 @@
+import socket
+from AbstractScanner import AbstractScanner
+from core.communication.CommunicationDictionary import CommunicationDictionary
+
+class CoreModel(AbstractScanner):
+    def __init__(self, timeout):
+        self.defSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        self.defSocket.settimeout(int(timeout))
+
+    def scan_address(self, address: CommunicationDictionary) -> CommunicationDictionary:
+        host = address["str"]
+        port = address["port"]
+        if not host: raise Exception
+        result = self.defSocket.connect_ex((host, port))
+        self.defSocket.close()
+        self.defSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        return result
diff --git a/modules/network_scan/__init__.py b/modules/network_scan/__init__.py
new file mode 100644
index 0000000..d98799d
--- /dev/null
+++ b/modules/network_scan/__init__.py
@@ -0,0 +1,6 @@
+import sys
+import os
+
+
+fil = __file__[:__file__.rindex(os.sep)]
+sys.path.insert(0,fil)
diff --git a/modules/storage/AbstractStorage.py b/modules/storage/AbstractStorage.py
new file mode 100644
index 0000000..16c30ad
--- /dev/null
+++ b/modules/storage/AbstractStorage.py
@@ -0,0 +1,12 @@
+from abc import ABC, abstractmethod
+
+
+class AbstractStorage(ABC):
+
+    @abstractmethod
+    def put_responce(self, address, responce):
+        pass
+
+    @abstractmethod
+    def save(self):
+        pass
diff --git a/modules/storage/JSONStorage.py b/modules/storage/JSONStorage.py
new file mode 100644
index 0000000..3fa9918
--- /dev/null
+++ b/modules/storage/JSONStorage.py
@@ -0,0 +1,23 @@
+from AbstractStorage import AbstractStorage
+import json
+from threading import RLock
+
+
+class JSONStorage(AbstractStorage):
+
+    def __init__(self, path):
+        self.path = path
+        self.respdict = dict()
+        self.lock = RLock()
+
+    def put_responce(self,  address,  responce):
+        ip, port = address
+        if ip not in self.respdict.keys():
+            self.respdict[ip] = {"open": [], "close": []}
+        self.respdict[ip]["open" if responce != 0 else "close"].append(port)
+
+    def save(self):
+        print("saving")
+        with open(self.path, "w") as f:
+            json.dump(self.respdict, f)
+        self.respdict = {}
diff --git a/modules/storage/__init__.py b/modules/storage/__init__.py
new file mode 100644
index 0000000..d98799d
--- /dev/null
+++ b/modules/storage/__init__.py
@@ -0,0 +1,6 @@
+import sys
+import os
+
+
+fil = __file__[:__file__.rindex(os.sep)]
+sys.path.insert(0,fil)