Network Security
4th Block
With the upraise of Internet use around the world from businesses, private computers and networks there are bound to be people out there trying to get easy money. Hackers and viruses and just human error all represent a potential threat to your networks and sometimes more personal stuff like credit card numbers and social security numbers. This is where the Network Security industry comes into play; it protects your network from viruses, worms, Trojan Horses, spy ware, adware, hackers, denial of service attacks and Identity theft. Network security is one of the best things you could own, you could be arrested for something you didn’t even do, all because you didn’t get security and someone stole your identity and bought some illegal substances or services off the internet from a cop set up.
Network Security consists of multiple layers of security. If one fails, there are many back up firewalls to help. There are many key components that all have an key role in keeping your network a safe place to work or surf the web, those components are Anti –virus, anti-spy-ware, firewall, IPS, and VPNs.
Network security starts with authenticating or simply a password. Some networks also require a two -factor authentication like an ATM card or finger print. After your authenticated the fire wall enforces access polices such as what services you’re allowed to use. Though it’s effective for keeping out unauthorized, it sometimes over looks worms and Trojans.
The benefits of having security are your privacy is assured, and collaboration is encouraged. If you’re a business owner your business partners will fill more secure sharing ...
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...reate a secure environment for the exchange of data between network devices. It is a form of authentication and encryption. A key is generated and used for encryption and a certificate is generated and used to verify authentication.
Symmetric key encryption or secret key cryptography uses a key that only the sender and receiver know. Both the sender and receiver use the same code or encryption to encrypt and decipher the messages. The term symmetric is used because the same key is used to encode and decode the data sent.
Asymmetric key encryption uses to keys, a private and public one. Typically the originator of the encryption system owns the private key.
Certificate Authority contains the security list of users authorized to access the private key owner’s messages using a public key. The CA sends the requested information in the form of a digital certificate.
Encryption is a strategy for changing data on a computer in a manner that it gets to be distinctly incomprehensible regardless of the possibility that somebody can access a PC with individual information on it.
What is encryption? Encryption is a technological technique that protects and secures the transfer of plain text information between two sources through the use of the internet. This is done by rearranging the text using a mathematical algorithm that renovates the message into an indecipherable form, which can only be unlocked and translated with a use of a key. The strength of the encryption key is measured by its length, which is determined by the number of bits and by the type of encryption program.
CA – Certificate Authority - is an entity that issues digital certificates. A digital certificate certifies the ownership of a public key by the named subject of the certificate.
Backing up data, avoiding a single point of failure, and making sure data is only put where it needs to be are a few extra precautions to keeping your network secure [8].
Asymmetric Encryption is used to protect the data while in movement. Asymmetric Encryption is also known as Public Key Encryption. It uses two related keys, a public key and a private key which is not shared with anyone. This pair of keys are developed by mathematical methods which can be solved in one direction. So anyone can encode a data using the public key but only the user with a private key can decode that specific data. The length of Asymmetric Key Encryption is normally 1024 or 2048 bits. However, in Asymmetric framework the keys with smaller than 2048bits are considered as not safe to use.
There are many terms which have been introduced by the field of encryption. Each of these terms are need to understand this discussion. Plaintext is the original document to be transmitted or stored on a computer system. Ciphertext is the encrypted document. ...
Encryption refers to the translation of data into secret serial characters. It is the most successful medium to achieve security of data. To access an encrypted file or data, a user must have the secret key or password to allow the entry to the data for decryption. Encrypted data is called cipher text whereas an unencrypted data is referred to as plain text.
Lv, X., Li, H., Wang, B. (2012) Virtual private key generator based escrow-free certificateless public key cryptosystem for mobile ad hoc networks ISSN: 19390114
Network Security is the protection of the computer’s network though out the entire infrastructure. It can protect very important information and computer files to help prevent theft, spyware, malware, viruses, and more. Depending on if you have a public or private network, can determine what type of security settings you need for your network. All people are different on what they want to have secured or not, but most people do not know how to prevent people or things from getting in their network. “You must have a general understanding of security terminology and specifications as it relates to configuring hardware and software systems.”(Roberts, Richard M. 599). That quote states that by knowing and understanding security terms and specifics, you can
Computer science is a vast field that includes nearly everything relating to computers. Everyday there is information transmitted all over the Internet. Pictures are uploaded, transactions are made on thousands of online retail websites, and banking transactions take place everyday on the Internet. All of these transactions have created a need for secure communications. People wish to keep things like banking, medical, and political information from the eyes of unwelcome parties. This has created a need for cryptography. Cryptography is the science or study of the techniques of secret writing, especially code and cipher systems, and is used by everyone from the average citizen to the government and military.
In today’s society technology is used for everything. With the invention of computers and the internet this open doors to the cyber world. Today you can do almost anything without having to leave your home. The internet gives us the opportunity of shopping online, ordering food online, working from home and video chatting with friends and family across the world. Everyone has a computer and internet access in their homes. While the internet is really convenient it also opens doors for cybercrimes, loss of privacy and the need for computer security.
...M and the US National Security Agency. It was previously the most dominant type of encryption, but it is now being taken over by AES (Advanced Encryption Standard). Since data encryption standard, only took on a 56-bit symmetric key encryption, AES uses three key sizes, 128, 192, and 256 bits. When personal computer users want to encrypt email or other documents, they go to Phillip Zimmerman?s "Pretty Good Privacy" software. This software allows you to digitally sign a message, which verifies to the recipient that you are the sender and that no interfering is involved.
The protection of data being transferred between ATMs and the bank, and the use of cell phones is the most common everyday encounter with encryption. To encrypt and decrypt information a cipher is used. In a cipher there is a set of well-defined steps that can be followed to encrypt and decrypt messages. The use of a cipher relies greatly on the use of an encryption key. The key may contain any auxiliary information added to the cipher to produce certain
To combat those threats and ensure that e-business transactions are not compromised, security technology must play a major role in today's networks. Why Networks Must Be Secured? Attacks: -. Without proper protection, any part of any network can be susceptible to attacks or unauthorized activity. Routers, switches, and hosts can all be violated by professional hackers, company competitors.
...vantage of the overall network design and implement usable subnets with virtual local area networks. Use encryption and encapsulation to secure communications of public segments to enable extranets and cross-Internet company traffic. Use items such as intrusion detection systems and firewalls to keep unauthorized users out and monitor activity. Taken together, these pieces can make a secure network that is efficient, manageable, and effective.