Computer Network Security

In this fast-paced digital world, cybercriminals are making deliberate attempts to gain access to the sensitive information and login credentials by tricking the innocent employees to fall into their trap. They look for the weakest point in the security system of an organization. The fact is that there is no other weakest point than the employees or individuals having little awareness knowledge of cyber threats. Lack of cybersecurity training and education can pose a devastating impact on the network security of the organization. Failure in protecting the data privacy and sensitive information of the company can lead to bad reputation for lifetime. Therefore, it is the prime duty of every business organization to provide an effective cybersecurity training and education of its employees. Well-trained and educated employees are the best defence against cyber attacks.

Antivirus software is common for network security. They provide firewall protection and site blocking to prevent any malicious attacks to your central server. Encryption and decription technologies are also used to protect sensitive data.

Dhcp relay agent

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If you aren't using an IDS (intrusion detection system) then you have to examine the system/audit logs of the computer that may be an intrusion.

That may or may not indicate a problem. Sometimes that information isn't specifically put anywhere.

Of course viruses can be spread through floppy disks, usb keys or other methods so being a standalone computer not connected to any network doesn't mean the computer can not be infected though the information cannot be leaked via the network to external persons.

However, there is also physical security of the computer itself, and that where it gets interesting depending on who and what your trying to secure the pc from.

If for instance the pc is sitting in a public area, and you are not worried just about external threats but also potential employee data theft then one should assume no information on the pc is secure even if the pc is standalone.

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Also - - -

Just because a computer is CURRENTLY standalone, does not mean someone cannot decide to connect it to a network (with or without approval) - at which time it's no longer standalone. Few computers manufactured these days do not have networking capability built in.

When a computer is disposed of, unless proper precautions are taken, all the information on it can be recovered - and misused - by whoever gets ahold of the hard drive.

GDPR i.e General Data Protection Regulationstrengthens data protection and information protection for EU citizens. The main focus of GDPR is that it enforce strong security of data and privacy rules too in all the organisations when you want to protect your personal data.

Paste bin Shopping cart software E-mail hosting service The host may also provide an interface or control panel for managing the Web server and installing scripts, as well as other modules and service applications like e-mail. A web server that does not use a control panel for managing the hosting account, is often referred to as a "headless" server. Some hosts specialize in certain software or services (e.g. e-commerce, blogs, etc.). The availability of a website is measured by the percentage of a year in which the website is publicly accessible and reachable via the Internet. This is different from measuring the uptime of a system. Uptime refers to the system itself being online. Uptime does not take into account being able to reach it as in the event of a network outage. A hosting provider's Service Level Agreement (SLA) may include a certain amount of scheduled downtime per year in order to perform maintenance on the systems. This scheduled downtime is often excluded from the SLA timeframe, and needs to be subtracted from the Total Time when availability is calculated. Depending on the wording of an SLA, if the availability of a system drops below that in the signed SLA, a hosting provider often will provide a partial refund for time lost. How downtime is determined changes from provider to provider, therefore reading the SLA is imperative. Not all providers release uptime statistics. Most hosting providers will guarantee at least 99.9% uptime which will allow for 43m of downtime per month, or 8h 45m of downtime per year. Web hosting is often provided as part of a general Internet access plan from Internet service providers. There are also many free and paid providers offering web hosting. A customer needs to evaluate the requirements of the application to choose what kind of hosting to use. Such considerations include database server software, scripting software, and operating system. Most hosting providers provide Linux-based web hosting which offers a wide range of different software. A typical configuration for a Linux server is the LAMP platform: Linux, Apache, MySQL, and PHP/Perl/Python. The web hosting client may want to have other services, such as email for their business domain, databases or multimedia services. A customer may also choose Windows as the hosting platform. The customer still can choose from Perl, PHP, Python, and Ruby, but the customer may also use ASP.NET or ASP Classic. Web hosting packages often include a web content management system, so the end-user does not have to worry about the more technical aspects. Because web hosting services host websites belonging to their customers, online security is an important concern. When a customer agrees to use a web hosting service, they are relinquishing control of the security of their site to the company that is hosting the site. The level of security that a web hosting service offers is extremely important to a prospective customer and can be a major consideration when considering which provider a customer may choose.Web hosting servers can be attacked by malicious users in different ways, including uploading malware or malicious code onto a hosted website. These attacks may be done for different reasons, including stealing credit card data, launching a Distributed Denial of Service Attack (DDoS) or spamming. Computer security, cybersecurity or information technology security (IT security) is the protection of computer systems and networks from the theft of or damage to their hardware, software, or electronic data, as well as from the disruption or misdirection of the services they provide. The field is becoming more significant due to the increased reliance on computer systems, the Internet and wireless network standards such as Bluetooth and Wi-Fi, and due to the growth of "smart" devices, including smartphones, televisions, and the various devices that constitute the "Internet of things". Owing to its complexity, both in terms of politics and technology, cybersecurity is also one of the major challenges in the contemporary world. The April 1967 session organized by Willis Ware at the Spring Joint Computer Conference, and the later publication of the Ware Report, were foundational moments in the history of the field of computer security. Ware's work straddled the intersection of material, cultural, political, and social concerns.A 1977 NIST publication introduced the "CIA triad" of Confidentiality, Integrity, and Availability as a clear and simple way to describe key security goals. While still relevant, many more elaborate frameworks have since been proposed. A vulnerability is a weakness in design, implementation, operation, or internal control. Most of the vulnerabilities that have been discovered are documented in the Common Vulnerabilities and Exposures

two applications communicating the data

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Switches use routing table which does allow to brandband your connection requests how hubs do. It protects you from sniffing programs.

You didn't indicate what kind of security you are looking for. Once you identify the area of computer security you can search via a search engine for those companies that supply it.

1) To hide evidence of an attacker's presence

2) To hide a back door into the system

In 1991, John McCumber created a model framework for establishing and evaluating information security (information assurance) programs, now known as The McCumber Cube. This security model is depicted as a three dimensional Rubik's Cube-like grid.

The concept of this model is that, in developing information assurance systems, organizations must consider the interconnectedness of all the different factors that impact them. To devise a robust information assurance program, one must consider not only the security goals of the program (see below), but also how these goals relate specifically to the various states in which information can reside in a system and the full range of available security safeguards that must be considered in the design. The McCumber model helps one to remember to consider all important design aspects without becoming too focused on any one in particular (i.e., relying exclusively on technical controls at the expense of requisite policies and end-user training).

I would like to offer some like that talk about McCumber Cube.

firs one:http://www.youtube.com/watch?v=f5RfboG31Os

second one:http://en.wikipedia.org/wiki/McCumber_cube

third one:http://books.google.co.uk/books?id=JpsntJT1dkQC&lpg=PA200&dq=McCumber%20Cube&pg=PP1#v=onepage&q=&f=false

It's represented in HEX format.

the disadvantage of truecrypt

It is when a environment is set so that passwords can potentially be viewed by administrators... theoretically so that users can have passwords retrieved, etc. However, this effectively means that the password is stored in plain text somewhere.

CHAP is one authentication protocol that needs reversible encryption enabled.

Asymmetric encryption employs the use of public/private key pairs.

It depends on the access technique used for the door lock - if it is a cipher lock then you need the unlock code or the magnetic card. For preset locks, you need a key.

For biometric locks, you need the appropriate biometric answer, a retinal scan, fingerprint, or palm print, etc. to unlock the door.

Conventional encryption ciphers rely on a single key for both encryption and decryption. Modern protocols will use a private key for encryption and a different public key for decryption. These two keys are mathematically related in a fashion that allows them to encrypt/decrypt the same data successfully.

IPV6 stands for internet protocol version 6. IPV6 address if of 128 bits and also have IPsec inbuilt .

Each computer on a peer-to-peer network is responsible for managing its own resources .

A peer-to-peer network is one in which two or more PCs share files and access to devices such as printers without requiring a separate server computer or server software.