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12. Network Security
12. Network Security
Published: 2017/03/30
Channel: MIT OpenCourseWare
Network Security 101: Full Workshop
Network Security 101: Full Workshop
Published: 2016/07/08
Channel: SecureSet
Firewalls and Network Security - Information Security Lesson #7 of 12
Firewalls and Network Security - Information Security Lesson #7 of 12
Published: 2013/10/23
Channel: Dr. Daniel Soper
Hacking an SV3C Network Security Camera
Hacking an SV3C Network Security Camera
Published: 2017/09/02
Channel: CNLohr
NetSecNow - Introduction To Network Security
NetSecNow - Introduction To Network Security
Published: 2013/05/16
Channel: NetSecNow
Network Security - Basic Concepts Definitions & Types of Attacks
Network Security - Basic Concepts Definitions & Types of Attacks
Published: 2016/05/30
Channel: Simple Snippets
Interview with Network Security Recruiter (Tenable Network Security) - Daily Blob - Jan 30, 2014
Interview with Network Security Recruiter (Tenable Network Security) - Daily Blob - Jan 30, 2014
Published: 2014/01/30
Channel: Eli the Computer Guy
NETWORK SECURITY - BASIC CONCEPTS
NETWORK SECURITY - BASIC CONCEPTS
Published: 2017/01/28
Channel: Sundeep Saradhi
Make Network Security Simple
Make Network Security Simple
Published: 2015/11/03
Channel: Cisco
NETWORK SECURITY - TYPES OF ATTACKS
NETWORK SECURITY - TYPES OF ATTACKS
Published: 2017/10/24
Channel: Sundeep Saradhi
Network Security Fundamentals
Network Security Fundamentals
Published: 2013/01/29
Channel: APNIC Training
NETWORK SECURITY - SECURITY SERVICES
NETWORK SECURITY - SECURITY SERVICES
Published: 2017/12/13
Channel: Sundeep Saradhi
Network Security and Cloud Jobs in I.T. - Which job is best for you?
Network Security and Cloud Jobs in I.T. - Which job is best for you?
Published: 2016/05/12
Channel: I.T. Career Questions
CompTIA Network+ - Network Security (Threats and Attacks)
CompTIA Network+ - Network Security (Threats and Attacks)
Published: 2013/11/05
Channel: Paul Browning
Communications and Network Security | CISSP Training Videos
Communications and Network Security | CISSP Training Videos
Published: 2015/09/21
Channel: Simplilearn
Is Your Network Secure? And Why Python Needs Security Transparency
Is Your Network Secure? And Why Python Needs Security Transparency
Published: 2017/12/17
Channel: Coding Tech
How to Become Network Security Engineer- Go for CCIE Security Training
How to Become Network Security Engineer- Go for CCIE Security Training
Published: 2015/05/07
Channel: Network Bulls
Types of firewall  | network firewall security | TechTerms
Types of firewall | network firewall security | TechTerms
Published: 2017/03/27
Channel: TechTerms
Network Security in Hindi Urdu  LECTURE 01
Network Security in Hindi Urdu LECTURE 01
Published: 2017/10/11
Channel: Virtual Comsats
Network Security - Tutorial For Beginners
Network Security - Tutorial For Beginners
Published: 2016/12/14
Channel: AnayaNation
How to Make Your Home Network More Secure
How to Make Your Home Network More Secure
Published: 2012/03/07
Channel: Chris Pirillo
What is Cyber and Network Security | ECPI University
What is Cyber and Network Security | ECPI University
Published: 2015/12/16
Channel: ECPI University
4. You wanna be a Network Security Engineer Are you sure
4. You wanna be a Network Security Engineer Are you sure
Published: 2017/04/26
Channel: System Engineer
OpenDNS for Network Security
OpenDNS for Network Security
Published: 2011/04/22
Channel: Eli the Computer Guy
Types of Attacks (NETWORK SECURITY)
Types of Attacks (NETWORK SECURITY)
Published: 2017/10/15
Channel: Programming Nightmare
Lesson 3: Common Mistakes and Best Practices for Designing Network Security Zones
Lesson 3: Common Mistakes and Best Practices for Designing Network Security Zones
Published: 2015/03/26
Channel: AlgoSec
Interview with a Network Security Analyst Part 1 - Network Administrator
Interview with a Network Security Analyst Part 1 - Network Administrator
Published: 2017/02/10
Channel: I.T. Career Questions
Application security Vs Network security
Application security Vs Network security
Published: 2017/01/18
Channel: sean mancini
Demo: Network Security Groups
Demo: Network Security Groups
Published: 2017/02/23
Channel: LinuxAcademy.com
What Is Network Security?
What Is Network Security?
Published: 2015/02/07
Channel: networking-forums.com
Information & Network Security Lecture -- DES simple Explanation (Eng-Hindi)
Information & Network Security Lecture -- DES simple Explanation (Eng-Hindi)
Published: 2016/11/17
Channel: Well Academy
Metasploit for Network Security Tutorial - 4 - FTP Login
Metasploit for Network Security Tutorial - 4 - FTP Login
Published: 2015/10/08
Channel: thenewboston
Network Security Using Python
Network Security Using Python
Published: 2017/02/26
Channel: NForceIT Army
Network Security Quest WoW Legion
Network Security Quest WoW Legion
Published: 2016/07/14
Channel: WoW Quests
Network Security Phases Introduction For Beginners PT.1
Network Security Phases Introduction For Beginners PT.1
Published: 2013/06/20
Channel: NetSecNow
Target IBPS SO IT-2018 | Day #1 | Network Security- Firewall
Target IBPS SO IT-2018 | Day #1 | Network Security- Firewall
Published: 2017/09/11
Channel: Apni Pathshala
Computer Network Security Technician Degree at Southeast Tech
Computer Network Security Technician Degree at Southeast Tech
Published: 2016/05/10
Channel: SoutheastTechSD
How To Find Your Network Security Key
How To Find Your Network Security Key
Published: 2013/04/05
Channel: NSKorg
Computer and Network Security - Intrusion Detection Systems
Computer and Network Security - Intrusion Detection Systems
Published: 2013/11/16
Channel: Jeffrey Miller
Cisco Encrypted Traffic Analytics - Why Network Security Matters with Saravanan Radhakrishnan
Cisco Encrypted Traffic Analytics - Why Network Security Matters with Saravanan Radhakrishnan
Published: 2017/06/29
Channel: Tech Field Day
Basic of Network Security, Services, Protocols and Encapsulation - Hindi
Basic of Network Security, Services, Protocols and Encapsulation - Hindi
Published: 2016/06/16
Channel: Mohammed Gufran
Network Security Quiz - MCQsLearn Free Videos
Network Security Quiz - MCQsLearn Free Videos
Published: 2017/08/30
Channel: MCQsLearn
Interview Questions : CCNA | Network Security #1
Interview Questions : CCNA | Network Security #1
Published: 2017/06/16
Channel: All About Testing
Stanford Online Course - Network Security
Stanford Online Course - Network Security
Published: 2016/04/10
Channel: stanfordonline
Top 100 Network Security Tools
Top 100 Network Security Tools
Published: 2009/04/05
Channel: JohnConnor9
Fingbox Network Security & Wi-Fi Troubleshooting Features Demo!
Fingbox Network Security & Wi-Fi Troubleshooting Features Demo!
Published: 2017/05/30
Channel: Fing Network Scanner
Public and Private Cloud Network Security: Mitigating Virtual Machine Vulnerabilities
Public and Private Cloud Network Security: Mitigating Virtual Machine Vulnerabilities
Published: 2015/05/19
Channel: Drexel University College of Computing & Informatics
Network Security #1: Threats
Network Security #1: Threats
Published: 2017/10/27
Channel: Computer Science Tutor
Find your Wifi Password ( Network Security Key) EVEN WHEN NOT CONNECTED TO internet
Find your Wifi Password ( Network Security Key) EVEN WHEN NOT CONNECTED TO internet
Published: 2016/08/20
Channel: sineterminum
Network security threats explained: Social engineering
Network security threats explained: Social engineering
Published: 2014/02/06
Channel: SophosLabs
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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Network security consists of the policies and practices 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. 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 concept[edit]

Network security starts with Authentication, 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' 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.[1] 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)[2] 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. Newer systems combining unsupervised machine learning with full network traffic analysis can detect active network attackers from malicious insiders or targeted external attackers that have compromised a user machine or account.[3]

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.[4]

Security management[edit]

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[edit]

Networks are subject to attacks from malicious sources. Attacks can be from two categories: "Passive" when a network intruder intercepts data traveling through the network, and "Active" in which an intruder initiates commands to disrupt the network's normal operation or to conduct reconnaissance and lateral movement to find and gain access to assets available via the network.[5]

Types of attacks include:[6]

See also[edit]

References[edit]

  1. ^ A Role-Based Trusted Network Provides Pervasive Security and Compliance - interview with Jayshree Ullal, senior VP of Cisco
  2. ^ Dave Dittrich, Network monitoring/Intrusion Detection Systems (IDS), University of Washington.
  3. ^ "Dark Reading: Automating Breach Detection For The Way Security Professionals Think". October 1, 2015. 
  4. ^ "''Honeypots, Honeynets''". Honeypots.net. 2007-05-26. Retrieved 2011-12-09. 
  5. ^ Wright, Joe; Jim Harmening (2009) "15" Computer and Information Security Handbook Morgan Kaufmann Publications Elsevier Inc p. 257
  6. ^ http://www.cnss.gov/Assets/pdf/cnssi_4009.pdf

Further reading[edit]

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