Essay on Network Security

Networking is part of our everyday lives now. Weather is us using our phones, computer, using GPS for directions, watching 3D movies and TV’s or in our work environments. Network Security has become search a big issue since our day to day live started to be more involve with us. These problems involve in all type of shapes and forms where some of these issues are cyber attacks, physical attacks, or abuse of policies. People are really exposed due to the amount of internet activities we have going on in most of our networks. There are two fundamentally different when it comes to networking, the data networks and the synchronous network comprised of switches. With that being said there are also

This type of network is designed to provides a secure, encrypted tunnel in which to transmit the data between the remote user and the company network” (Beal). VPN uses encryption to provide data confidentiality. Virtual Private Networks makes use of encryption and special protocols to provide extra security.

These are the problems that Transport Layer Security (TLS) aims to solve, building on the Secure Socket Layer (SSL) protocol originally created by a team at Netscape for secure transactions on early websites (although similar to SSL, TLS is different enough for them to not work together). TLS will create a “tunnel” that is an established connection between source and destination, through which all packet data AND packet headers are encrypted. However, before TLS gets involved, Dubh’s source machine must first establish a reliable transport protocol with which to communicate with the destination. In this case, we will (safely) assume that we are using Transmission Control Protocol (TCP) to establish this connection:

How do you secure something that is changing faster than you can fix it? The Internet has had security problems since its earliest days as a pure research project. Today, after several years and orders of magnitude of growth, is still has security problems. It is being used for a purpose for which it was never intended: commerce. It is somewhat ironic that the early Internet was design as a prototype for a high-availability command and control network that could resist outages resulting from enemy actions, yet it cannot resist college undergraduates. The problem is that the attackers are on, and make up apart of, the network they are attacking. Designing a system that is capable of resisting attack from within,

Internet security are such a big thing because many things are based off the internet. As in most of the storage is done off of cloud storage, so you don’t need lots of storage in your computer. Which makes internets unsafe because anyone could hack into your account and take your information. Like your bank account and your personal accounts that could really hurt you I the long run. Or someone could put a scam on a common website that most people go on. And could hack everyone’s computer that has the scams. Another way of spamming is by hacking into someone else email and sending them spam that looks like legitimate with a subject or message. Fooled sender email addresses, logos, trademarks, and the wording used in the message will often add to the trick.

Encryption: encryption is carried out on the sender side, hence transferred plain text into the cipher text and forwarded over the network.

Therefore, in order to prevent exposure of confidential information, VPNs generally allow only verified remote access and make use of encryption techniques. VPNs provide security by the use of tunneling protocols and through security procedures such as encryption. The VPN security model give confidentiality such that even if the network traffic is sniffed at the packet, an attacker would only see encrypted data, sender authentication to prevent unauthorized users from accessing the VPN and message integrity to detect any occurence of manipulating with transmitted messages

The Wide Area Network (WAN) will interconnect the workplaces by means of Virtual Private Network (VPN) and leased line connections. The VPN connections will be utilized by actualizing Security Socket Layer (SSL) innovations. Utilizing SSL innovations, ABC Company will have the capacity to give the best adaptability to the remote client's in the U.S. Furthermore, there will be no loss of system performance. The VPN will utilize a public network and build up a secure tunnel connection with the inner system. The activity that goes through the passage is encrypted to ensure all information

As each year passes, there never comes a time that the Internet continues to spread its influence to further parts of the world. The internet gives benefits to anyone who uses the global-reaching technology. People are now able to connect to other individuals who they otherwise would not have met and share vast amounts of information in only a few seconds. However, some people with malicious intent uses that technology to harm or even destroy the rest of the population’s lives. In such a situation, communities with access to the Internet raise questions on how one should effectively use internet security to protect their members on the internet. Yet, much information, private or otherwise, are accessible with the right investigative techniques. Home addresses, credit card numbers, private relationships, organizational affiliations, and medical histories are just some of the many kinds of information that people can easily access with enough knowledge in techniques in hacking and simple secondary research. In addition to a large amount of indifference toward protecting private digital property, another obstacle for internet security is the excessive sharing of personal information among various digital platforms such as Facebook and Twitter. Encouragement to share information for self-promotion and for criminal cases makes internet privacy even more difficult to attain.

In the previous five years, cybersecurity has turned into the most looked for after calling around the world. More than 90 percent of respondents to an overview directed by the Ponemon Institute (2011) detailed being a casualty to cyberattacks amid the most recent year, costing all things considered more than $2 million for each association. This number keeps on ascending as the two programmers and security devices progress. As indicated by PwC, roughly 33% of all U.S. organizations are as of now utilizing digital protection (Lindros and Tittel, 2016).

Technology is great in so many ways. It has provided us with more communication access, access to knowledge at our finger tips, and so much more. Technology has overall made life easier, but maybe too easy, and has made things a lot less private. This results in us having to be extra careful with security on the internet. Internet security is important to protect our privacy, protect us from fraud, and from viruses that could destroy a piece of our technology. Internet privacy and security may be different but share a responsibility, but it is up to us to take personal responsibility to protect ourselves on the internet. We should pick unique, carful passwords, and never share this sensitive information, and encrypt our data when online.

Tyson & Crawford (2015) describe the function of a VPN (virtual private network) as connecting remote sites or users together via a public network like the Internet. An SSL (Secure Socket Layer) VPN, is created by using the SSL protocol, a cryptographic protocol (Jabbar, 2015). When using a VPN, data that is to be exchanged is encrypted and then it moves through a virtual tunnel so that it cannot be seen by the public (Tyson & Crawford, 2015). The tunnel effect is achieved by using encapsulation, which means that each packet is encapsulated within another packet before it is sent across the Internet, thus providing protection from the public network. Jabbar (2015) explains that the security level of an SSL VPN is more “invulnerable to breach” than a VPN created with other protocols like PPTP or L2TP/IPSec as it adds the use of “X 509 certificates to facilitate data encryption,” thus adding another level of security. Another difference with an SSL VPN is that it does not require client software; it can be accessed with just a web browser and no specific operating system is required (Jabbar,

Network security has changed significantly over the past years. There is more and more data to monitor and analyze in order to detect the activity of your data and systems. Securing a network has many variables. Password authentication, network access, patches, anti-virus protection, intrusion detection, firewall and network monitoring tools are just a few of the things you can do to protect yourself.

Denial of service (DoS)- This type of attack occurs when a hacker overloads a server or network device with numerous IMCP (Internet Control Message Protocol) ping requests, such that it is unable to respond to valid requests. By updating to the latest service pack and applying security patches, you can minimize the threat of DoS attacks by reducing the vulnerabilities in the TCP/IP network protocol. Although disabling ICMP can remove valuable troubleshooting tools, it can effectively remove the possibility of DoS attacks. Also, any firewall or security software should be configured to recognize and block these attempts if possible.

The two TCP/IP transport layer protocols (TCP and UDP), are very crucial for the smooth operation of network services for both the computer applications and application layer protocols such as HTTP, FTP, SMTP and Telnet. These two transport layer protocols TCP and UDP execute these services via the employment of IP. They use IP in the efficient routing of packets to their respective destination networks (Steinke,2001).The TCP is further noted by Steinke (2001) to be responsible for the provision of a reliable and yet connection-oriented byte-stream packet delivery while its counterpart UDP is noted to be responsible for the provision of a connectionless but rather unreliable packet delivery. In this paper we explain the work of the two TCP/IP transport layer protocols (TCP and UDP). In addition, describe how TCP and UDP manage key functions such as reliability, port addressing, and segmentation.