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12. Network Security
12. Network Security
Published: 2017/03/30
Channel: MIT OpenCourseWare
NetSecNow - Introduction To Network Security
NetSecNow - Introduction To Network Security
Published: 2013/05/16
Channel: NetSecNow
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
Network Security 101: Full Workshop
Network Security 101: Full Workshop
Published: 2016/07/08
Channel: SecureSet
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
98-367  Security Fundamentals   Understanding Network Security
98-367 Security Fundamentals Understanding Network Security
Published: 2016/05/20
Channel: Joshi Hitesh
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
A day in the life of IT security
A day in the life of IT security
Published: 2012/07/27
Channel: Kaspersky Lab
Make Network Security Simple
Make Network Security Simple
Published: 2015/11/03
Channel: Cisco
Network Security Fundamentals
Network Security Fundamentals
Published: 2013/01/29
Channel: APNIC Training
NETWORK SECURITY - BASIC CONCEPTS
NETWORK SECURITY - BASIC CONCEPTS
Published: 2017/01/28
Channel: Sundeep Saradhi
Network Security - Tutorial For Beginners
Network Security - Tutorial For Beginners
Published: 2016/12/14
Channel: AnayaNation
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
How firewalls work | Network firewall security | firewall security
How firewalls work | Network firewall security | firewall security
Published: 2017/03/01
Channel: TechTerms
What is Cyber and Network Security | ECPI University
What is Cyber and Network Security | ECPI University
Published: 2015/12/16
Channel: ECPI University
Communications and Network Security | CISSP Training Videos
Communications and Network Security | CISSP Training Videos
Published: 2015/09/21
Channel: Simplilearn
Network security part 3 virus
Network security part 3 virus
Published: 2014/07/01
Channel: Telusko Learnings
Network Security Phases Introduction For Beginners PT.1
Network Security Phases Introduction For Beginners PT.1
Published: 2013/06/20
Channel: NetSecNow
Network Security Specialist
Network Security Specialist
Published: 2013/04/04
Channel: Wisconsin Technical Colleges
The Complete Nmap Ethical Hacking Course : Network Security Assessment
The Complete Nmap Ethical Hacking Course : Network Security Assessment
Published: 2017/07/25
Channel: Station X
Computer Network Security Technician Degree at Southeast Tech
Computer Network Security Technician Degree at Southeast Tech
Published: 2016/05/10
Channel: SoutheastTechVideos
Principles of Network Security and Cryptography
Principles of Network Security and Cryptography
Published: 2016/05/31
Channel: Simple Snippets
CCENT (ICND1) An Overview of Network Security
CCENT (ICND1) An Overview of Network Security
Published: 2013/01/07
Channel: StormWind Studios
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
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
how to find the password (network security key) of remembered wifi networks inside windows 7
how to find the password (network security key) of remembered wifi networks inside windows 7
Published: 2014/11/06
Channel: Tech Tutorials
Tips and answers about Network security and maintenance 2/2  | Tech Talk | News7 Tamil
Tips and answers about Network security and maintenance 2/2 | Tech Talk | News7 Tamil
Published: 2015/10/17
Channel: News7 Tamil
CISSP CBK Overview - Telecom Network Security
CISSP CBK Overview - Telecom Network Security
Published: 2015/01/14
Channel: Become Cissp
How to change Network Security Key
How to change Network Security Key
Published: 2015/03/04
Channel: 天 天
Online Network Security Course
Online Network Security Course
Published: 2016/07/10
Channel: Station X
Network Security Phases Introduction For Beginners PT.3 Recon.
Network Security Phases Introduction For Beginners PT.3 Recon.
Published: 2013/07/06
Channel: NetSecNow
How To Find Your Network Security Key
How To Find Your Network Security Key
Published: 2013/04/05
Channel: NSKorg
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
Firewalls and Network Security in Hindi Urdu, Computer Networking tutorial 21 lecture
Firewalls and Network Security in Hindi Urdu, Computer Networking tutorial 21 lecture
Published: 2013/11/22
Channel: factner
Network security threats explained: Websites
Network security threats explained: Websites
Published: 2014/01/02
Channel: SophosLabs
Next Generation Network Security Animated Explainer
Next Generation Network Security Animated Explainer
Published: 2011/09/02
Channel: KamranRKhan
INTRODUCTION TO KERBEROS NETWORK SECURITY TECHNOLOGY IN HINDI
INTRODUCTION TO KERBEROS NETWORK SECURITY TECHNOLOGY IN HINDI
Published: 2015/11/25
Channel: Ajaze Khan
Computer and Network Security - PGP
Computer and Network Security - PGP
Published: 2013/09/26
Channel: Jeffrey Miller
Network Security Key
Network Security Key
Published: 2014/05/27
Channel: La-Nass Hall
How to check network security key in windows 10
How to check network security key in windows 10
Published: 2016/07/15
Channel: dno hacker
Network security threats explained: Advanced persistent threats (APTs)
Network security threats explained: Advanced persistent threats (APTs)
Published: 2013/12/12
Channel: SophosLabs
Wireless Network Security: Part 1
Wireless Network Security: Part 1
Published: 2013/11/26
Channel: Scholartica Channel
Review ExpressRoute for Office 365 configuration (routing, proxy and network security)
Review ExpressRoute for Office 365 configuration (routing, proxy and network security)
Published: 2016/09/30
Channel: Microsoft Ignite
Bro Network Security Moniter(Bro-IDS)
Bro Network Security Moniter(Bro-IDS)
Published: 2013/03/20
Channel: Ong Bắp Cày
New workflows on the McAfee IPS, the Network Security Platform (NSP)
New workflows on the McAfee IPS, the Network Security Platform (NSP)
Published: 2016/04/18
Channel: McAfee
Ramp Up Your Network Security
Ramp Up Your Network Security
Published: 2016/11/03
Channel: Moxa Inc
Cyber and Network Security | ECPI University
Cyber and Network Security | ECPI University
Published: 2016/01/07
Channel: ECPI University
Network Security Services - Telstra Solutions
Network Security Services - Telstra Solutions
Published: 2013/06/17
Channel: Telstra Enterprise
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WIKIPEDIA ARTICLE

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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 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' 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 managements[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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