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Configuring IPSec Site to Site VPN in FTD using FMC
You'll learn how to configure IPSec Site to Site VPN on FTD using FMC Firepower Threat Defense. Linkedin: https://www.linkedin.com/in/nandakumar80/
Symmetric Key and Public Key Encryption
Modern day encryption is performed in two different ways. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. Using the same key or using a pair of keys called the public and private keys. This video looks at how these systems work and how they can be used together to perform encryption. Download the PDF handout http://itfreetraining.com/Handouts/Ce... Encryption Types Encryption is the process of scrambling data so it cannot be read without a decryption key. Encryption prevents data being read by a 3rd party if it is intercepted by a 3rd party. The two encryption methods that are used today are symmetric and public key encryption. Symmetric Key Symmetric key encryption uses the same key to encrypt data as decrypt data. This is generally quite fast when compared with public key encryption. In order to protect the data, the key needs to be secured. If a 3rd party was able to gain access to the key, they could decrypt any data that was encrypt with that data. For this reason, a secure channel is required to transfer the key if you need to transfer data between two points. For example, if you encrypted data on a CD and mail it to another party, the key must also be transferred to the second party so that they can decrypt the data. This is often done using e-mail or the telephone. In a lot of cases, sending the data using one method and the key using another method is enough to protect the data as an attacker would need to get both in order to decrypt the data. Public Key Encryption This method of encryption uses two keys. One key is used to encrypt data and the other key is used to decrypt data. The advantage of this is that the public key can be downloaded by anyone. Anyone with the public key can encrypt data that can only be decrypted using a private key. This means the public key does not need to be secured. The private key does need to be keep in a safe place. The advantage of using such a system is the private key is not required by the other party to perform encryption. Since the private key does not need to be transferred to the second party there is no risk of the private key being intercepted by a 3rd party. Public Key encryption is slower when compared with symmetric key so it is not always suitable for every application. The math used is complex but to put it simply it uses the modulus or remainder operator. For example, if you wanted to solve X mod 5 = 2, the possible solutions would be 2, 7, 12 and so on. The private key provides additional information which allows the problem to be solved easily. The math is more complex and uses much larger numbers than this but basically public and private key encryption rely on the modulus operator to work. Combing The Two There are two reasons you want to combine the two. The first is that often communication will be broken into two steps. Key exchange and data exchange. For key exchange, to protect the key used in data exchange it is often encrypted using public key encryption. Although slower than symmetric key encryption, this method ensures the key cannot accessed by a 3rd party while being transferred. Since the key has been transferred using a secure channel, a symmetric key can be used for data exchange. In some cases, data exchange may be done using public key encryption. If this is the case, often the data exchange will be done using a small key size to reduce the processing time. The second reason that both may be used is when a symmetric key is used and the key needs to be provided to multiple users. For example, if you are using encryption file system (EFS) this allows multiple users to access the same file, which includes recovery users. In order to make this possible, multiple copies of the same key are stored in the file and protected from being read by encrypting it with the public key of each user that requires access. References "Public-key cryptography" http://en.wikipedia.org/wiki/Public-k... "Encryption" http://en.wikipedia.org/wiki/Encryption
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Mikrotik How to create Graph Monitoring Traffic
Mikrotik How to create Graph Monitoring Traffic
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The Cryptographic Protocol - what are the techniques of cryptography?
Want to learn more about Cryptocurrency and the Cryptographic Protocols? Watch the video below to see how simple & effective, Bitcoin trading can really be https://goo.gl/q8kdDV .... A protocol is a set of rules. It describes the proper protocol for certain actions and behaviors. David Johnston, the Governor General of Canada, broke protocol when he touched Queen Elizabeth II on the steps of Canada House on Trafalgar Square in London. The Queen was 91 years old at the time and the Governor General touched her arm to protect her from falling on the steps. It is protocol to not touch a member of Britain’s royal family. methods. Specific topics include: 1. Overview of communications channels used in power systems. 2. Review of cryptographic protocols and how they work. 3. How cryptography can impact monitoring, control, and protection communications. 4. Differences between substation communications systems and corporate The confidentiality and integrity protections offered by cryptographic protocols such as SSL/TLS can protect communications from malicious eavesdropping and tampering. Authenticity protections provide assurance that users are actually communicating with the systems as intended. For example, are you sending your Often cryptographic algorithms and protocols are necessary to keep a system secure, particularly when communicating through an untrusted network such as the Internet. Where possible, use cryptographic techniques to authenticate information and keep the information private (but don't assume that simple encryption SUMMARY. This project will focus on research in cryptology at an advanced international level. Project topics will be analysis and construction of symmetric and asymmetric cryptographic algorithms and protocols. In particular we will use our knowledge involving deep techniques from coding theory on cryptological. What is a cryptographic protocol? A cryptographic protocol is a protocol executed by several distant agents through a network where the messages or part of the messages are produced using cryptographic functions (encryption, hashing, etc.). Cryptographic protocols are used for various purpose between the agents:. May 7, 2006 - This is regarded as offensive because of the malicious payload normally embedded in the virus, and because of the use of anti-anti-virus techniques For instance, on networks some layer 2 protocols are based on crypto (WEP, WPA/TKIP, and others), as are some upper layer protocols (IPSec, SSH, SSL, primitives such as commutative encryption. We give a list of some relevant al- gebraic properties of cryptographic operators, and for each of them, we provide examples of protocols or attacks using these properties. We also give an overview of the existing methods in formal approaches for analyzing cryptographic proto-. Using cryptographic techniques, it may be possible to allow intermediate results in a distributed algorithm to be certified independently of who provides them, reducing themes of complexity theory, e.g., interactive provability, average vs. worst-case complexity, and the inherent communication costs of multiparty protocols. Web is an electronic protocol which allows people to communicate mail, information, and commerce through a digital medium. This new method of information exchange has caused a tremendous need for information security. A thorough understanding of cryptography and encryption will help people develop better ways to etc. The analysis techniques discussed in this survey assume per- fect cryptography. This means that cryptographic primitives are considered as black boxes satisfying certain properties, as described in section 2.1. below. This assumption by it- self does not ensure security of the protocols. Even if all cryptographic primitives The Cryptographic Protocol what are the techniques of cryptography types of cryptographic algorithms cryptography methods types of cryptography cryptography examples cryptography algorithms applications of cryptography cryptography basics cryptography computer science #TheCryptographicProtocolwhatarethetechniquesofcryptography #typesofcryptographicalgorithms #cryptographymethods #typesofcryptography #cryptographyexamples #cryptographyalgorithms #applicationsofcryptography #cryptographybasics #cryptographycomputerscience Visit our YouTube channel for more videos on Bitcoin and Cryptocurrency https://www.youtube.com/channel/UCTxqXgVxEGQUIFY_MdRz5ww Also watch: https://www.youtube.com/watch?v=kH6u_CsQddE https://www.youtube.com/watch?v=W4LlCYVP65A This presentation contains images that were used under a Creative Commons License. Click here to see the full list of images and attributions: https://app.contentsamurai.com/cc/107949
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Lecture - 34 Basic Cryptographic Concepts Part : III
Lecture Series on Internet Technologies by Prof.I.Sengupta, Department of Computer Science & Engineering ,IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
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RSA/Cisco AnyConnect Setup
A screencast on how to use the RSA keyfob with the Cisco AnyConnect VPN client.

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