SSH stands for Secure Shell. It is a protocol used in execution of secure remote login and associated programs. By using SSH we can securely move files from one location to another either on secure network or insecure network such as Internet.
Functionality of SSH is quietly similar in comparison to telnet and rlogin. For connecting to a remote machine running over a SSH server we use SSH to access our applications and data. Some primary advantages of using SSH are as follows:
1. We can authenticate the remote machine by using SSH which cannot be possible by telnet and rlogin.
2. We can use encryption method for securing the passwords by using SSH.
3. We can also send and receive the data in the encrypted form by using SSH.
Some disadvantages of using SSH are as follows:
1. By using encryption and decryption method, it consumes a lot of computing and time that elapses in it.
2. SSH can create a false alarm situation in case of legitimate reinstallation of remote system and the installer is not aware for using the exact authentication keys for the host.
3. SSH is vulnerable to the man in the middle attack by unauthenticated users.
SSL stands for Secure Sockets Layer. This protocol provides a secure channel between two machines located at different locations. It is used for the protection of transit data and also recognising the communication machine. Basically SSL provides security for web based applications like internet banking. For providing end-to-end secure service over TCP, we use SSL.
SSL is basically divided into two layers of protocol. Bottom layer is SSL record protocol which is used by HTTP protocol. SSL record protocol provides confidentiality (by using encryption) and message integrity (by using message authentication ...
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...te the commands across any type of network, while SSL is used for securely transmitting the critical information such as credit card or net banking transactions. SSH is more concerned about Network Tunneling whereas SSL concerns security certificates.
Conclusion: As SSH and SSL are entirely different protocols and used for different purposes. It is very difficult to say which one is best among one another. If we compare SSH to Telnet, it is easy to say that SSH is much better than the telnet because SSH uses encryption and decryption feature for the security prospects.
Likewise comparison between HTTPS (SSL via HTTP) and simply HTTP is feasible. In this case HTTPS uses secure socket layer protocol to access secured webpages with necessary security certificates. On the other hand we use HTTP to simply browse webpages which are often vulnerable to any kind of threats.
RPC: Remote Procedural Call allows a client to invoke services by making a local procedure call, instead of accessing remote services by message passing (sending and receiving messages).
Telepsychiatry has been used for many years and is highly regarded as an area where the use of telemedicine has been successful. It has been defined as “The delivery of healthcare and the exchange of healthcare information for purposes of providing psychiatric services across distances” (Woo...
Telenursing is the application of information and telecommunications technology to offer the nursing or healthcare services to the patients. The most advanced field of telehealth is in household telenursing healthcare. Telenursing devices like computers, telephones and videophones enable nurses to increase successfully the patient numbers seen daily while reducing the entire workload (Arnaert & Delesie, 2001). Nurses are capable of doing this without having to leave the doctor’s office or hospital hence saving a considerable amount of
Asymmetric Key Encryption methods are DSA, Diffie Hellman, RSA, Elliptic Curve and DSA. Asymmetric Encryption
Telemedicine is a new comer to the field of medicine and it is the treatment of patients by means of telecommunications technology. Telemedicine is carried out in a variety of ways whether it is by smart phone, wireless tools or other forms of telecommunications. Examples of telemedicine include: 1) transmission of medical images 2) care services at the home of the patient 3) Diagnosis at distance 4) education and training of patients. The diversity of practices in what is known as telemedicine raises many questions and one of those questions, which is extremely important, relate to the safety of the practice and the risks involved.
The next item is to utilize a secured socket layer (SSL) to increase security by encoding data at the sent point and decrypting it at the receiving end plus adding a layer of corporate firewalls (Lee, 2003). The next method utilizes a Virtual Private Network or VPN to transport packets but utilizes its own software to encrypt and decrypt at the sending and receiving transmission platforms (Gartee, 2011). Therefore a VPN limits the data packets to those individuals who have been identified to access the information and the system is maintain within the information department of the facility. In addition, a VPN verifies the identity of the person signing on by ensuring those only with access should be able to view the data. Another benefit of a VPN is that it is not limited to WebPages and may be utilized to secure data being transmitted in other application software (Lee, 2002). The Health Insurance Portability and Accountability ACT of 1996 (HIPAA) and the Health Information Technology for Economic and Clinical Health (HITECH mandates the appropriate administrative, technical and physical safeguards be utilized to protect
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
Data encryption refers to the process of transforming electronic information into a scrambled form that can only be read by someone who knows how to translate the code. In nowadays business world, it’s the easiest and most practical way to secure the information that we stored and processed, and it’s significant for our sensitive information. For example, as electronic commerce is popular now, the vendors and retailers must protect the customers’ personal information from hackers or competitors. They also have many business files or contracts that need to be strictly protected. Without data encryption, these important information may fall into wrong hands and be misused by others. Besides, data encryption may be used to secure sensitive information that exists on company networks, or create digital signatures, and help to authorize in business. No one should underestimate the importance of encryption. A little mistake in encryption may make sensitive information revealing, or even result in illegal and criminal accuse.
Telnet is a program that connects a PC to the server or router on the network. The default port for telnet is 23. SNMP is a p...
...tal part of lives just like privacy. Using cryptology provides mechanisms through a digital signature. This signature is inserted using a key (that only the writer of the email possesses) whilst a timestamp binds itself to the document. This type of cryptography is used to control access of security installations or pay-per-view television channels.
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.
Encryption converts a message in such as way that its contents are hidden from unauthorized readers. It is intended to keep messages and information as a secret. Plaintext, also known as clear text, is the plain or original message, which is has not yet been encrypted. Once the message is encrypted it is then called a cipher text. This process is obviously referred as encryption. The exact opposite process is called decryption. Encryption is the most successful way to attain data security. To read an encrypted file, you must have access to a secret key or password that enables you to decrypt it. Data encryption is a means of scrambling the data so that is can only be read by the person holding the key, a password of some sort. Without the key, the cipher cannot be broken and the data remains secure. Using the key, the cipher is decrypted and the data is returned to its original value or state. Each time one desires to encrypt data, a key from the 72,000,000,000,000,000 possible key variations, is randomly produced, and used to encrypt the data. The same key must be made known to the receiver if they ar...
The length of the key for the encryption can vary from being very short to extremely long, and the length of the message being encrypted. 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.
In this era when the Internet provides essential communication between tens of millions of people and is being increasingly used as a tool for security becomes a tremendously important issue to deal with, So it is important to deal with it. There are many aspects to security and many applications, ranging from secure commerce and payments to private communications and protecting passwords. One essential aspect for secure communications is that of cryptography. But it is important to note that while cryptography is necessary for secure communications, it is not by itself sufficient. Cryptography is the science of writing in secret code and is an ancient art; In the old age people use to send encoded message which can be understand by the receiver only who know the symbolic and relative meaning of that encoded message .The first documented use of cryptography in writing dates back to circa 1900 B.C. Egyptian scribe used non-standard hieroglyphs in an inscription. After writing was invented cryptography appeared spontaneously with applications ranging from diplomatic missives to war-time battle plans. It is no surprise, then, that new forms of cryptography came soon after the widespread development of computer communications. In telecommunications and data cryptography is necessary when communicating in any untrusted medium, which includes any network, particularly the Internet [1].Within the context of any application-to-application communication, there are some security requirements, including:
With the help of telehealth and telenursing, overall healthcare costs can be reduced, especially for those patients