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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
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 - 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 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
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
How to Make Your Home Network More Secure
How to Make Your Home Network More Secure
Published: 2012/03/07
Channel: Chris Pirillo
98-367  Security Fundamentals   Understanding Network Security
98-367 Security Fundamentals Understanding Network Security
Published: 2016/05/20
Channel: Joshi Hitesh
Network Security - Tutorial For Beginners
Network Security - Tutorial For Beginners
Published: 2016/12/14
Channel: AnayaNation
Network Security Phases Introduction For Beginners PT.1
Network Security Phases Introduction For Beginners PT.1
Published: 2013/06/20
Channel: NetSecNow
What Is Network Security?
What Is Network Security?
Published: 2015/02/07
Channel: networking-forums.com
CompTIA Network+ - Network Security (Threats and Attacks)
CompTIA Network+ - Network Security (Threats and Attacks)
Published: 2013/11/05
Channel: Paul Browning
Network Security Fundamentals
Network Security Fundamentals
Published: 2013/01/29
Channel: APNIC Training
Communications and Network Security | CISSP Training Videos
Communications and Network Security | CISSP Training Videos
Published: 2015/09/21
Channel: Simplilearn
NETWORK SECURITY - TYPES OF ATTACKS
NETWORK SECURITY - TYPES OF ATTACKS
Published: 2017/10/24
Channel: Sundeep Saradhi
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
How firewalls work | Network firewall security | firewall security  | TechTerms
How firewalls work | Network firewall security | firewall security | TechTerms
Published: 2017/03/01
Channel: TechTerms
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
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
INTRODUCTION TO FIREWALLS FOR NETWORK SECURITY IN HINDI
INTRODUCTION TO FIREWALLS FOR NETWORK SECURITY IN HINDI
Published: 2015/11/25
Channel: LearnEveryone
Types of firewall  | network firewall security | TechTerms
Types of firewall | network firewall security | TechTerms
Published: 2017/03/27
Channel: TechTerms
Azure Network Security Groups Explained in less than 5 minutes
Azure Network Security Groups Explained in less than 5 minutes
Published: 2017/03/08
Channel: LessThan5Min
What is Cyber and Network Security | ECPI University
What is Cyber and Network Security | ECPI University
Published: 2015/12/16
Channel: ECPI University
Networking versus Security
Networking versus Security
Published: 2016/09/02
Channel: Cisco
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
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
Principles of Network Security and Cryptography
Principles of Network Security and Cryptography
Published: 2016/05/31
Channel: Simple Snippets
Network Security Using Python
Network Security Using Python
Published: 2017/02/26
Channel: NForceIT Army
Demo: Network Security Groups
Demo: Network Security Groups
Published: 2017/02/23
Channel: LinuxAcademy.com
NeSSi2 - agent-based Network Security Simulator v2
NeSSi2 - agent-based Network Security Simulator v2
Published: 2011/01/21
Channel: DAILab
Network Security - Topic Need of Security taught @ Vidyalankar
Network Security - Topic Need of Security taught @ Vidyalankar
Published: 2016/05/28
Channel: Vidyalankar Group of Educational Institutes
Network Security Part 5 Cryptography
Network Security Part 5 Cryptography
Published: 2014/07/08
Channel: Telusko Learnings
NTEC 225 Chapter 1 Lecture Video - Modern Network Security Threats
NTEC 225 Chapter 1 Lecture Video - Modern Network Security Threats
Published: 2017/01/12
Channel: Dwight Hughes
SHA-1 Algorithm ( Cryptography & Network Security)
SHA-1 Algorithm ( Cryptography & Network Security)
Published: 2017/09/28
Channel: ponjesly cse
Metasploit for Network Security Tutorial - 1 - Introduction
Metasploit for Network Security Tutorial - 1 - Introduction
Published: 2015/10/08
Channel: thenewboston
Lost your Wireless Network Security Key? Here
Lost your Wireless Network Security Key? Here's how to find your Wireless Network Security Key!
Published: 2012/12/09
Channel: extremewebdesigns
DMZ in Network Security - Part3
DMZ in Network Security - Part3
Published: 2011/11/02
Channel: Networking Lab
Computer Network Security Technician Degree at Southeast Tech
Computer Network Security Technician Degree at Southeast Tech
Published: 2016/05/10
Channel: SoutheastTechSD
Trend Micro Home Network Security  - Full
Trend Micro Home Network Security - Full
Published: 2017/01/31
Channel: Trend Micro
cryptography and network security-Introduction(1)
cryptography and network security-Introduction(1)
Published: 2017/06/18
Channel: CSEBuddy
Enable show characters network security key
Enable show characters network security key
Published: 2015/02/19
Channel: Nikhil Surendrean
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 Module 1.1
Network Security Module 1.1
Published: 2009/05/20
Channel: ilearnthisway
Network security part 3 virus
Network security part 3 virus
Published: 2014/07/01
Channel: Telusko Learnings
Metasploit for Network Security Tutorial - 5 - Setting Up Metasploitable
Metasploit for Network Security Tutorial - 5 - Setting Up Metasploitable
Published: 2015/10/08
Channel: thenewboston
Network Security Secure hashing Algorithm 1 or SHA 1 algorithm Attack in network Security Computer
Network Security Secure hashing Algorithm 1 or SHA 1 algorithm Attack in network Security Computer
Published: 2017/05/27
Channel: Krishna Kanhaiya Universe
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
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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 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 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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