Artificial Immune Syste for Intrusion Detection System

The immune system plays a vital role in helping the body to fight diseases, as well as pathogens, the disease-causing factors. It is mainly composed of the tonsils and adenoids, the lymph nodes and lymphatic vessels, the spleen, appendix, and bone marrow. The main purpose of the immune system is to assist the body in its struggle to maintain optimal health.

The innate immune system is effective to a certain degree. That said, if the environment is regulated then the body is less likely to get ill. Innate immunity is effective as once the patient matures his immune system will mature due to the B and T memory cells. The memory cells will help the body prepare for the virus once it has arrived. The memory cells will send specialised lymph nodes to the invading pathogen. The B and T memory cells are key to immunity of a virus.

The body’s protection against viruses, bacteria and other types of invasions is our immune system (Tortora, 2014).

Adaptive immunity (p.446): The body’s ability to recognize and defend itself against distinct invaders and their products.

The immune system contributes to homeostasis as it protects and defends against invaders that pose a threat to the body’s balance. Homeostasis is an internal balance that is maintained by multiple factors within the body. The immune system is responsible for avoiding and limiting infections in the body. It prevents and heals damage that invading pathogens may cause to the body. In this way, it helps maintain homeostasis by eliminating pathogens and the imbalances they cause in the body. A first defense, known as the innate immune response, activates as soon as the body is infected. It is the same regardless of the invader. Examples include skin, chemical secretions, and linings.

Active- Active immunity happens when the person’s immune system is being unprotected directly to a deteriorated form of the pathogen and responding by developing immunity to the agent.

The immune system consists of a defense system that guards the body against invasion from infections and other diseases. Normally, a healthy person's immune system has the capability to differentiate between its own cells and cells that represent threats to the health of the body. (Craft and Kanter, 2002). Autoimmune disease refers to a broad range of over 80 acute, long-lasting diseases that affect nearly every organ in the body. (Wrong Diagnosis.com, 2000).

(Meeusen et al 2007). Once understood the normal function of the immune system and the actual

Adaptive, or acquired, immunity refers to antigen-specific defence mechanisms that take several days to become protective and are designed to react with and remove a specific antigen. This is immunity develops throughout life.

The adaptive immune system works by memorization. The aforementioned immune system remembers previous encounters with specific pathogens and destroys

The goal of intrusion detection is to monitor network assets, detect anomalous behavior, and identify misuse within a network (Ashoor, Gore, 2011). An intrusion detection system (IDS) is a device or software application that monitors network system activities for malicious activity or policy violations and produces reports to a management station (Kashyap, Agrawal, Pandey, Keshri, 2013), additionally there are three types of IDS:

The immune system is comprised of two responses: the adaptive immune response and the innate immune response. The first line of defence against invading organisms is classified as the innate immune response and the second line of defence and protection against re- exposure to the same pathogen is known as the adaptive immune response.

The immune system is a complex network of interacting cells 7 including innate and specific systems. The main purpose of the immune system is to identify and remove pathogens. The innate system can recognise and kill the microbes without having prior exposure while the specific systems have much more specialised functions. 8 A major part of the immune system are the white blood cells or leukocytes. Within the leukocytes there are many types. One of the most significant is the lymphocytes. Lymphocytes consist of two types of cells, the B cells and the T cells which can further be split into helper and killer cells. B

Our immune system is the second most complex system in our body. It is made up of organs, cells and proteins that work together to protect our bodies from harmful bacteria, viruses or other microorganisms that can cause diseases. Usually we don’t notice our immune system defending us against pathogens, but if the pathogen (harmful microorganism) is aggressive or if our body hasn’t ever come into contact with it, we can get sick. The jobs of our immune system are to recognise pathogens, as well as neutralise and remove them from our body. Our immune system also has to fight our own cells if they have changed due to an illness, for example, cancer. (1)

In this paper [15] authors did not Implemented IDS architecture but used an apriori algorithm to detect frequent attacks. The future research will be including a feedback mechanism such that the frequent attacks detected by the IDS were updated to the signature database. This would ensure that it weren’t remaining as an unknown intrusion in future.