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Network security

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Network security consists of the policies adopted to prevent and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources. Network security involves the authorization of access to data in a network, which is controlled by the network administrator.[citation needed] Users choose or are assigned an ID and password or other authenticating information that allows them access to information and programs within their authority. Network security covers a variety of computer networks, both public and private, that are used in everyday jobs; conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access. Network security is involved in organizations, enterprises, and other types of institutions. It does as its title explains: It secures the network, as well as protecting and overseeing operations being done. The most common and simple way of protecting a network resource is by assigning it a unique name and a corresponding password.

Network security concepts

Network security starts with authenticating, commonly with a username and a password. Since this requires just one detail authenticating the user name —i.e., the password— this is sometimes termed one-factor authentication. With two-factor authentication, something the user 'has' is also used (e.g., a security token or 'dongle', an ATM card, or a mobile phone); and with three-factor authentication, something the user 'is' also used (e.g., a fingerprint or retinal scan).

Once authenticated, a firewall enforces access policies such as what services are allowed to be accessed by the network users. Though effective to prevent unauthorized access, this component may fail to check potentially harmful content such as computer worms or Trojans being transmitted over the network. Anti-virus software or an intrusion prevention system (IPS) help detect and inhibit the action of such malware. An anomaly-based intrusion detection system may also monitor the network like wireshark traffic and may be logged for audit purposes and for later high-level analysis.

Communication between two hosts using a network may be encrypted to maintain privacy.

Honeypots, essentially decoy network-accessible resources, may be deployed in a network as surveillance and early-warning tools, as the honeypots are not normally accessed for legitimate purposes. Techniques used by the attackers that attempt to compromise these decoy resources are studied during and after an attack to keep an eye on new exploitation techniques. Such analysis may be used to further tighten security of the actual network being protected by the honeypot. A honeypot can also direct an attacker's attention away from legitimate servers. A honeypot encourages attackers to spend their time and energy on the decoy server while distracting their attention from the data on the real server. Similar to a honeypot, a honeynet is a network set up with intentional vulnerabilities. Its purpose is also to invite attacks so that the attacker's methods can be studied and that information can be used to increase network security. A honeynet typically contains one or more honeypots.

Security management

Security management for networks is different for all kinds of situations. A home or small office may only require basic security while large businesses may require high-maintenance and advanced software and hardware to prevent malicious attacks from hacking and spamming.

Types of attacks include:

Passive

  • Network
  • Wiretapping
  • Port scanner
  • Idle scan

Active

  • Denial-of-service attack
  • DNS spoofing
  • Man in the middle
  • ARP poisoning
  • VLAN_hopping
  • Smurf attack
  • Buffer overflow
  • Heap overflow
  • Format string attack
  • SQL injection
  • Phishing
  • Cross-site scripting
  • CSRF

Wikipedia

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Tawaran Khas untuk lepasan SPM/STPM/STAM/Diploma/Matrikulasi/Asasi Sempena Ulang Tahun ke 20 ICYM

  1. Biasiswa Penginapan dan Pengangkutan bagi Program Diploma dan Ijazah
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Foundation / Diploma Foundation In Information Technology Foundation In Management Diploma In Entrepreneurship Diploma In Marketing Diploma In Accountancy Diploma In Islamic Financial Planning Diploma In Culinary Arts Diploma In Hotel Management Diploma In Tourism Management Diploma In Animation Technology Diploma In Media Technology Diploma In Theatrical Arts And Technology Diploma In Multimedia Technology Diploma In Information Technology Diploma In Computer Networking Diploma In Cyber Security Diploma In Electrical Technology Diploma In Industrial Electronic Technology Diploma In Early Childhood Education Diploma In Guidance & Counseling Diploma In Aircraft Maintenance Technology Kerjasama Universiti Teknologi Malaysia Diploma In Technology Management (UTM) Diploma In Technology Management (Accounting) (UTM) Diploma In Computer Science (Information Technology) (UTM) Sarjana Muda Sains (Pembangunan Sumber Manusia) (UTM) Sarjana Muda Pengurusan (Pemasaran) (UTM) Sarjana Muda Sains Komputer (Perisian Grafik & Multimedia) (UTM) Sarjana Muda Sains Komputer (Rangkaian & Keselamatan) (UTM) Professional License Aircraft Maintenance License Technician (AML-T) DCAM-PT-66 CAT A1 Aircraft Maintenance License Engineer (AML-E) DCAM-PT-66 CAT B1-1 Sijil Kemahiran Malaysia (SKM) / Short Course Lukisan Pelan Senibina / Juruteknik Elektrik / Teknologi Automotif / Pembuatan Pastri Program Tajaan Ground Handling Management (GHM) PTPTN Bahagian Pengurusan Kemasukan Pelajar UPU KWSP YAYASAN PENERAJU UPEN PTPK TAPEM YAYASAN NEGERI ZAKAT MARA UNIVERSITI ISLAM ANTARABANGSA MALAYSIA (IIUM) UNIVERSITI KEBANGSAAN MALAYSIA (UKM) UNIVERSITI KEBANGSAAN MALAYSIA (UKM) UNIVERSITI MALAYA UNIVERSITI MALAYSIA KELANTAN (UMK) UNIVERSITI MALAYSIA PAHANG (UMP) UNIVERSITI MALAYSIA PERLIS (UNIMAP) UNIVERSITI MALAYSIA SABAH (UMS) UNIVERSITI MALAYSIA SARAWAK (UNIMAS) (KOTA SAMARAHAN) UNIVERSITI MALAYSIA TERENGGANU (UMT) UNIVERSITI PENDIDIKAN SULTAN IDRIS (UPSI) UNIVERSITI PERTAHANAN NASIONAL MALAYSIA UNIVERSITI PUTRA MALAYSIA (UPM) UNIVERSITI SAINS ISLAM MALAYSIA (USIM) UNIVERSITI SAINS MALAYSIA (USM) UNIVERSITI SULTAN ZAINAL ABIDIN (UNISZA) UNIVERSITI TEKNIKAL MALAYSIA MELAKA (UTEM) UNIVERSITI TEKNOLOGI MALAYSIA (UTM) UNIVERSITI TEKNOLOGI MARA UNIVERSITI TUN HUSSEIN ONN MALAYSIA (UTHM) UNIVERSITI UTARA MALAYSIA (UUM)

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  • ong 65e06Throughout my studies in ICYM, I have encountered many challenges and obstacles. However, I was lucky enough to be given the opportunity to gain knowledge here and also to engage in co-curriculum activities organized by the college. For me, ICYM is the best choice. 

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