diff --git a/network/communication.py b/network/communication.py
index f6ade2b..009c473 100644
--- a/network/communication.py
+++ b/network/communication.py
@@ -1,7 +1,9 @@
 from http.client import NON_AUTHORITATIVE_INFORMATION
-from flask import Flask
+from flask import Flask, request, jsonify
 from utils.database.database import Database
 from utils.exceptions import DatabaseException
+from utils.models.models import Client
+import json
 
 
 class FlaskAppWrapper(object):
@@ -40,11 +42,27 @@ class Server():
         return {"server_name": self.name, "server_version": self.version, "host": self.host}
 
     def register_new_client_to_database(self):
-        # TODO: implement
-        self.database
+        request_content_type = request.headers.get('Content-Type')
+        json_string = ""
+        if request_content_type == 'application/json':
+            json_string = request.json
+            try:
+                json_object = json.loads(json_string)
+                new_client_object = Client(mac_address=json_object["mac_address"], ip_address=json_object["ip_address"], hostname=json_object[
+                                           "hostname"], client_version=json_object["client_version"], vm_list_on_machine=json_object["vm_list_on_machine"])
+                self.database.add_client(new_client_object)
+                response = jsonify(success=True)
+                response.status_code = 201
+                return response
+            except Exception as ex:
+                response = jsonify(success=False)
+                response.status_code = 400
+                return response
 
     def run(self):
         self.app.add_endpoint(endpoint="/", endpoint_name="server_data",
                               handler=self.basic_server_data, methods=["GET"])
+        self.app.add_endpoint(endpoint="/clients", endpoint_name="register_client",
+                              handler=self.register_new_client_to_database, methods=["POST"])
         # TODO: add rest of endpoints
         self.app.run()
diff --git a/utils/models/models.py b/utils/models/models.py
index 317651f..01feba7 100644
--- a/utils/models/models.py
+++ b/utils/models/models.py
@@ -11,33 +11,42 @@ client_image_table = Table(
     Column("image_id", Integer, ForeignKey("vm_images.image_id"))
 )
 
+
 class Client(Base):
     __tablename__ = "clients"
     mac_address = Column(String, primary_key=True)
-    ip_address = Column(String)
-    hostname = Column(String)
-    client_version = Column(String)
+    ip_address = Column(String(16), nullable=False)
+    hostname = Column(String(100), nullable=False)
+    client_version = Column(String(100), nullable=False)
     vm_list_on_machine = relationship(
         "VMImages",
-        secondary = client_image_table,
-        back_populates = "vm_images"
+        secondary=client_image_table,
+        back_populates="vm_images"
     )
-    
+
     def has_vm_installed(self, vm_object):
         for vm in self.vm_list_on_machine:
             if vm.image_hash == vm_object.image_hash:
                 return True
         return False
 
+
 class VMImage(Base):
     __tablename__ = "vm_images"
     image_id = Column(Integer, primary_key=True)
-    image_name = Column(String)
-    image_file = Column(String)
-    image_version = Column(String)
-    image_hash = Column(String)
+    image_name = Column(String(100), unique=True, nullable=False)
+    image_file = Column(String(500), unique=False, nullable=False)
+    image_version = Column(String(100), nullable=False)
+    image_hash = Column(String(500), nullalbe=False)
     clients = relationship(
         "Clients",
-        secondary = client_image_table,
-        back_populates = "clients"
-    )
\ No newline at end of file
+        secondary=client_image_table,
+        back_populates="clients"
+    )
+
+
+class User(Base):
+    __tablename__ = "users"
+    user_id = Column(Integer, primary_key=True)
+    username = Column(String)
+    password_hash = Column(String)