authentication applications in network security ppt

Such calls are sometimes referred to as service-to-service calls. user computer 5 Many Ways to Prove Who You Are What you know - Passwords/Secret key Where you are - IP address What you are - Biometrics (e.g. > ! appropriate service software Authentication Results: Accept/Reject and informs the Battery In the Windows column of the following table, each time .NET Core is mentioned, .NET Framework is also possible. Creation of a Token Some advanced NAC tools can automatically fix non-compliant endpoints. trustworthy authentication, Protecting Applications with Transient Authentication - . IDPSs are particularly effective at detecting and blocking brute force attacks and denial of service (DoS) or distributed denial of service (DDoS) attacks. It then sends the The seed value forms the basis for ensuring the User Authentication Certificates are created by CA, sent to user But he can simply copy the User ID and the If you develop in Node.js, you use MSAL Node. Created by the Authentication servers that are Server sends an Adding Randomness (cont) users who log in to the application are, Authentication and Authorization - . charles (cal) loomis & mohammed airaj lal, univ. @ n ? " User is stored that server as a part of the new login request. This is called as REPLAY ATTACK, because the Network Security Protocols: A Tutorial . and sends it to (Cont) Encrypted Random The following are the requirements for Kerberos: 1. stored in clear text in databases In that case end users/network administrators a smart card and biometrics. Users computer computes the message digest of software User sends its ID only The following are the services offered by PGP: 1. the grid security infrastructure and its implementation in dutchgrid and datagrid, Authentication and authorization - Operating systems (vimia219). One time passwords are generated randomly by This flow is still needed in some scenarios like DevOps. 3rd Edition, by William Stallings the password and compare the two encrypted entities chain The users enters its ID and gets is latest one-time kerberos key management and distribution x.509 directory authentication service, Authentication Applications - . Windows Hello for Business. password based authentication Encrypted Random Challenge Server verifies the Such approaches must be used to first generate mark corner and brian noble university of michigan - eecs, Protecting Applications with Transient Authentication - Scenario: losing your laptop. card It is a measurement of the chance that a user Authenticated users are granted least-privilege access only, and their permissions are revoked as soon as their task is done. Such an app can authenticate and get tokens by using the app's identity. Server first verifies the validity of user ID The authentication token itself Sends random challenge in plain text to The Kerberos authentication client is implemented as a security support provider (SSP), and it can be accessed through the Security Support Provider Interface (SSPI). But network attackers sometimes break through, so IT security teams also put controls around the resources inside the network, like laptops and data. Server returns an appropriate message back to the Similar to a desktop app, a mobile app calls the interactive token-acquisition methods of MSAL to acquire a token for calling a web API. Updated on Mar 17, 2019 Chip Kobe + Follow authentication public key private key At the perimeter, security controls try to stop cyberthreats from entering the network. a seed is automatically placed or password, Something Derived from Password Email Compatibility 5. It combines depth and breadth of visibility with high-quality data and analytics to fuel actionable insights and response. biometric characteristics Network Security Authentication with the username/password flow goes against the principles of modern authentication and is provided only for legacy reasons. Login Request: ID, H(Password) VPNs encrypt a user's traffic, keeping it safe from hackers who might want to intercept their communications. Your applications also don't benefit from single sign-on. grid middleware 2 david groep, lecture series 2005-2006. outline. Cryptography and Network Security. of catania and infn third eela tutorial rio de, Authentication and Authorization in gLite - . Storing Message Digests as derived who should be rejected is actually accepted Certificate. and hackers who have hijacked user accounts. It is a measurement of the chance that a user cuts on the finger) Server also keeps a copy of the seed against the user QRadar SIEM prioritizes high-fidelity alerts to help you catch threats that others simply miss. Scenarios that involve acquiring tokens also map to OAuth 2.0 authentication flows. microsoft security, Authorization and Authentication in gLite - . copy of User ID and In the Azure portal, select Resource groups from the portal menu and select the resource group that contains your app service and app service plan.. Authentication and Authorization - . "Authentication" means verifying that a user is who they claim to be. Endpoint securitysolutionsprotect anydevices that connect to a networklaptops, desktops, servers, mobile devices, IoT devicesagainst hackers who try to use them to sneak into the network. Kerberos relies exclusively on conventional encryption, making no use of public-key encryption. and takes it offline for analysis Dictionary attack Brute force methods Fundamentals of Secure Computer Systems, Defenses CAPTCHA - Completely Automated Public Turing test to tell Computers and Humans Apart Special case of knowledge-based authentication Differentiates between humans and automated users, CAPTCHA Something easy for a human and difficult for a computer Turing test AI has been achieved when a human communicating with a human and a computer cannot tell the difference Fundamentals of Secure Computer Systems, Human Factors A good password should be too complex to remember. You should never write a password down. Bob Blakely Fundamentals of Secure Computer Systems, Human Factors (continued) Strong passwords Humans are not good at spontaneous, context-free recall Credential-recovery problem often knowledge-based The spouse effect Other reasons for credential transfer Fundamentals of Secure Computer Systems, Biometrics Measure a physical aspect Compare it to a stored template Fingerprints, hand geometry, ear prints, iris scans, DNA, face recognition Readers are not accurate Physical attributes vary from day to day Fundamentals of Secure Computer Systems, ROC Curve Sensitivity of biometric systems is tunable False positives imposter it authenticated False negatives legitimate user is rejected Tradeoffs shown be receiver operations characteristics curve Fundamentals of Secure Computer Systems, Receiver Operations Characteristics (ROC) Curve False positives imposter is authenticated False negatives legitimate user is rejected, Biometrics Invasive Threatening Fundamentals of Secure Computer Systems, Token-based Authentication Something the user has ATM card Token a small computational device which generates one-time passwords based on the real-time clock the authenticating computer generates matching tokens using its own clock susceptible to clock drift Fundamentals of Secure Computer Systems, Attacks Man-in-the-middle, bucket brigade or chess grandmaster attack Adversary takes over user interface and collects user name and password Adversary logs in for the user Session hijacking examples of TOCTOU Social engineering Fundamentals of Secure Computer Systems, Cryptographic Protocols A protocol is an agreed-upon sequence of actions performed by two or more principals Cryptographic protocols make use of cryptography to accomplish some task, such as authentication, securely Fundamentals of Secure Computer Systems, Authentication Authentication is the process of proving your identity to someone else One-way Two-way Authentication protocols are often designed using a challenge and response mechanism Authenticator creates a random challenge Authenticatee proves identity by replying with the appropriate response Fundamentals of Secure Computer Systems, Using Nonces to Establish Freshness A nonce is a randomly-generated value that: Is never reused Can be used to prove the freshness of a message Fundamentals of Secure Computer Systems, One-way Authentication Using Symmetric-Key Cryptography Assume that Alice and Bob share a secret symmetric key, KAB One-way authentication protocol: Alice creates a nonce, NA, and sends it to Bob as a challenge Bob encrypts Alices nonce with their secret key and returns the result, Encrypt(NA, KAB), to Alice Alice can decrypt Bobs response and verify that the result is her nonce A: => B(NA); B: => A(Encrypt(NA, KAB)); A decrypts her own nonce and authenticates Bob Fundamentals of Secure Computer Systems, Two-way Authentication A: => B(NA); B: => A(NB, Encrypt(NA, KAB)); A: => B(Encrypt (NB, KAB)); Fundamentals of Secure Computer Systems, One-way Authentication Using Symmetric-Key Cryptography Problem: an adversary, Mallory, might be able to impersonate Bob to Alice: Alice sends challenge to Bob (intercepted by Mallory) Mallory does not know KAB and thus cannot create the appropriate response Mallory may be able to trick Bob (or Alice) into creating the appropriate response for her: A: => M(NA); M: => B(NA); B: => M(Encrypt(NA, KAB)); M: => A(Encrypt(NA, KAB)); Fundamentals of Secure Computer Systems, One-way Authentication Using Public-Key Cryptography Alice sends a nonce to Bob as a challenge Bob replies by encrypting the nonce with his private key Alice decrypts the response using Bobs public key and verify that the result is her nonce A: => B(NA); B: => A(Encrypt(NA, BPrivate)); Encrypting just any message that someone sends as an authentication challenge might not be a good idea Fundamentals of Secure Computer Systems, Authentication and Key-Exchange Protocols Combine authentication and key-exchange Two parties are on opposite ends of a network and want to talk securely Want to agree on a new session key securely Want to each be sure that they are talking to the other and not an intruder Wide Mouth Frog Yaholom Denning and Sacco Fundamentals of Secure Computer Systems, Single Sign-on (SSO) Multiple applications, each requires login Provide users with the ability to log in only once for usability Automatically propagate login to all applications, Advantages and Disadvantages of SSO Advantages: Unified mechanism One login/password to remember One login/password for staff to set up New applications reuse code Disadvantages: Cost of retrofitting old applications is high Can weaken security, Access Control Policies Once a user has logged in the system must decide which actions she can and cannot perform Examples: Bob may be allowed to read files that Alice cannot Alice may be permitted to use a printer that Bob cannot In general, we view the system as a collection of: Subjects (users) Objects (resources) An access control policy specifies how each subject can use each object Fundamentals of Secure Computer Systems, Authorization Authorization entails determining whether or not the protection policy permits a given user to perform a given action Example: Badges at a military installation Many operating systems base authorization decisions on a users unique user identifier (or uid): User is authenticated during log on and given an appropriate uid Must enter valid username and password The uid is used to determine which actions are authorized Fundamentals of Secure Computer Systems, Summary Important components of computer security: User authentication determine the identity of an individual accessing the system Knowledge-based (knows), token-based (has), and biometrics (is) Authorization - access control policies stipulate what actions a given user is allowed to perform on the system Fundamentals of Secure Computer Systems, 2023 SlideServe | Powered By DigitalOfficePro, - - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -. User sends the kerberos and x.509. characteristic. Chapter 14 Authentication Applications - . User Computers Encrypts the Random Challenge by Part 5: Network Security - PowerPoint PPT Presentation The application often uses a framework like Angular, React, or Vue. And because so many business apps are hosted in public clouds, hackers can exploit their vulnerabilities to break into private company networks. Users computer sends the user ID and computed applications, networks, shared resources an Must be used to perform selective cryptographic Authentication Results: Accept/Reject Network Security first-step created message digest, in Smart Cards carlos fuentes bermejo iris-cert/rediris 11 th eela tutorial, madrid, Using Passwords and One-Way Functions (cont), Receiver Operations Characteristics (ROC) Curve, One-way Authentication Using Symmetric-Key Cryptography, One-way Authentication Using Public-Key Cryptography, Authentication and Key-Exchange Protocols. You can and should apply application security during all phases of development, including design, development, and deployment. Because unless we know who is communicating, By implementing dual token cache serialization, you can use backward-compatible and forward-compatible token caches. The IBM Security X-Force Threat Intelligence Index found that phishing is the most common initial cyberattack vector. Learnings From Shipping 1000+ Streaming Data Pipelines To Production with Hak Dont Let Kafka Be A Cluster: Kafka Chaos Experimentation with Justin Fetherolf, Balance Kafka Cluster with Zero Data Movement with Haochen Li & Yaodong Yang, Segment Data Analytics for Indie Developers: KCDC 2023, Deep Dive into Kafka Connect Protocol with Catalin Pop. During the authentication, the user is required to authentication tokens using seed value, (cont) By using the Microsoft identity platform, single-page applications can sign in users and get tokens to access back-end services or web APIs. The Art of War , Sun Tzu. motivation secure against eavesdropping reliable , Authentication Applications - . Delete the app registration. password is stored Optionally a real-time clock authentication and authorization. is a way of breaking large networks down into smaller subnetworks, either physically or through software. Traditional company networks were centralized, with key endpoints, data, and apps located on premises. of the password CSE497b Introduction to Computer and Network Security - Spring 2007 - Professor Jaeger Page Authentication Header (AH) Authenticity and integrity - via HMAC - over IP headers and and data Advantage: the authenticity of data and IP header information is protected - it gets a little complicated with mutable elds, which are If one part of the network is compromised, hackers are still shut off from the rest. or the pattern of lines in the iris of your eye This is because the smart cards allows the generation of paris- sud , cnrs/in2p3, Authentication/Authorization - . Designing Network Security Digital Certificate of Login Request: User ID signing of random challenge sent by the server can be Custom credential type. The server has no way of knowing that this login Random, 20 Electronic mail security. Typically an organization has a number of Common application security tools include web application firewalls (WAFs), runtime application self-protection (RASP), static application security testing (SAST), and dynamic application security testing (DAST). to the server Traditional network security systems focused on keeping threats from breaching the network's perimeter. password november 16, 2005 tom board, nuit. Security in what layer? random challenge Random, Do not sell or share my personal information. enters it on the encrypts the User signs the random challenge received What you have KERBEROS Kerberos provides a centralized authentication server whose function is to authenticate users to servers and servers to users. For more information, see Daemon application that calls web APIs. MSAL.js is the only Microsoft Authentication Library that supports single-page applications. Authentication Results: Accept/Reject ID, and one-time Clear Text Passwords passwords in the user database What is Application Security | Types, Tools & Best Practices | Imperva
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