SSH n'est pas un shell Unix comme Bourne shell et shell C
SSH est un protocole qui permet de se connecter de façon sécurisée à un système Mac, Linux ou Windows.
Utilise le cryptage (Secure Shell).
Sécuriser une connexion
Shell is a protocol that provides authentication, encryption and data integrity to secure network communications. Implementations of Secure Shell offer the following capabilities: a secure command-shell, secure file transfer, and remote access to a variety of TCP/IP applications via a secure tunnel. Secure Shell client and server applications are widely available for most popular operating systems.
X.509 certificates are used to authenticate users in distributed systems. They contain a user's public key that is signed by a Certification Authority. Certificates are organized in hierarchies where each CA can validate certificates from other CAs. Version 3 certificates include extensions that provide additional information like usage constraints and policies.
SSH is a protocol for secure remote access and file transfer that replaces insecure protocols like telnet. It uses encryption and authentication to securely transmit data, remote shell access, port forwarding, and file transfers between a client and server. Reasons to use SSH include enabling secure communication channels, arbitrary port redirection, optional compression, and protecting against spoofing and routing attacks.
Overview of the TELNET protocol.
TELNET is a protocol providing platform independent, bi-directional byte-oriented communication between hosts (unlike rlogin which is Unix based).
Most often TELNET is used for remote login to hosts on the Internet.
TELNET is basically a TCP connection with interspersed TELNET control information.
TELNET may use option negotiation for providing additional services such as character echoing back to the sender.
TELNET does not provide any authentication and therefore should not be used in unsecure environments anymore. SSH (Secure SHell) should be used instead.
Secure Shell (SSH) is a cryptographic network protocol for operating network services securely over an unsecured network. This presentation is made as an assignment during our university course.
This document provides an overview of Kerberos, including:
- Kerberos is an authentication protocol that uses symmetric encryption and timestamps to allow nodes communicating over an insecure network to verify each other's identity securely.
- It works by having a client first authenticate with an authentication server to obtain a ticket-granting ticket, then uses that ticket to obtain additional tickets for access to other services.
- Kerberos addresses the need for secure authentication in distributed network environments where the workstations themselves cannot be fully trusted.
SSL is an acronym for Secure Sockets Layer. It is a protocol used for authenticating and encrypting web traffic. For web traffic to be authenticated means that your browser is able to verify the identity of the remote server.
Shell is a protocol that provides authentication, encryption and data integrity to secure network communications. Implementations of Secure Shell offer the following capabilities: a secure command-shell, secure file transfer, and remote access to a variety of TCP/IP applications via a secure tunnel. Secure Shell client and server applications are widely available for most popular operating systems.
X.509 certificates are used to authenticate users in distributed systems. They contain a user's public key that is signed by a Certification Authority. Certificates are organized in hierarchies where each CA can validate certificates from other CAs. Version 3 certificates include extensions that provide additional information like usage constraints and policies.
SSH is a protocol for secure remote access and file transfer that replaces insecure protocols like telnet. It uses encryption and authentication to securely transmit data, remote shell access, port forwarding, and file transfers between a client and server. Reasons to use SSH include enabling secure communication channels, arbitrary port redirection, optional compression, and protecting against spoofing and routing attacks.
Overview of the TELNET protocol.
TELNET is a protocol providing platform independent, bi-directional byte-oriented communication between hosts (unlike rlogin which is Unix based).
Most often TELNET is used for remote login to hosts on the Internet.
TELNET is basically a TCP connection with interspersed TELNET control information.
TELNET may use option negotiation for providing additional services such as character echoing back to the sender.
TELNET does not provide any authentication and therefore should not be used in unsecure environments anymore. SSH (Secure SHell) should be used instead.
Secure Shell (SSH) is a cryptographic network protocol for operating network services securely over an unsecured network. This presentation is made as an assignment during our university course.
This document provides an overview of Kerberos, including:
- Kerberos is an authentication protocol that uses symmetric encryption and timestamps to allow nodes communicating over an insecure network to verify each other's identity securely.
- It works by having a client first authenticate with an authentication server to obtain a ticket-granting ticket, then uses that ticket to obtain additional tickets for access to other services.
- Kerberos addresses the need for secure authentication in distributed network environments where the workstations themselves cannot be fully trusted.
SSL is an acronym for Secure Sockets Layer. It is a protocol used for authenticating and encrypting web traffic. For web traffic to be authenticated means that your browser is able to verify the identity of the remote server.
Key management and distribution are complex due to cryptographic, protocol, and management issues. Symmetric schemes require parties to share a secret key, while public key schemes require parties to acquire valid public keys. This document discusses several methods for distributing keys, including using symmetric encryption, public key encryption, public announcements, directories, authorities, and certificates signed by certificate authorities.
Telnet is an early network protocol that allows text-based access to remote systems but lacks security features. It works at the application layer and provides bidirectional interactive text communication through a virtual terminal connection. SSH was developed as a secure replacement for Telnet, supporting encryption, authentication, and integrity to prevent eavesdropping and spoofing. It uses public/private key cryptography to securely transmit data and authenticate systems. While still used occasionally, SSH is now generally preferred over Telnet for remote access due to its enhanced security.
This document provides an overview of Kerberos, an authentication protocol used to securely identify clients within a non-secure network. It discusses Kerberos' design which includes clients, a Key Distribution Center (KDC) consisting of an authentication and ticket granting server, and services. It also defines common Kerberos terms and describes how Kerberos works by having the KDC issue tickets to allow clients access to services. Key features of Kerberos include centralized credential management and reduced protocol weaknesses. A limitation is that compromising the KDC puts the entire infrastructure at risk.
Digital signatures provide authentication and integrity for electronic documents and transactions. They use public key cryptography where a document is encrypted with the sender's private key and decrypted by the recipient's public key. A digital certificate issued by a certificate authority binds the signer's identity to their public key and is verified using the CA's digital signature. Common uses of digital signatures include software updates, financial transactions, and legally binding documents.
This document discusses the Kerberos authentication protocol. It provides a high-level overview of Kerberos, including its history, terminology, working, environment, database, and administrator. Kerberos provides strong authentication for physically insecure networks using trusted third parties and time-stamped tickets. While it ensures passwords are not sent in the clear, Kerberos is vulnerable if users choose poor passwords and relies on all machines being designed for its authentication.
Digital signatures provide authentication of digital documents by using asymmetric cryptography algorithms like RSA. Digital signatures demonstrate that a message was created by a known sender and was not altered in transit. They are commonly used for software distribution, financial transactions, and anywhere unaltered authentication is important. Digital signatures work by using public and private keys to encrypt a hash of the message, validating the source and integrity of the signed document.
Telnet is a network protocol used to provide bidirectional interactive text communication over TCP. It allows connecting a client (with display and keyboard) to a remote command line interface. Telnet uses ASCII encoding and negotiates options to support advanced functions. While it provided remote access historically, security issues have led to decreased use for that purpose in favor of SSH.
HTTP is a client-server protocol that allows web browsers to request web pages from servers using requests and responses. Clients usually use GET or POST methods to request resources from servers using TCP port 80, and servers respond with status messages and the requested content. HTTPS is a secure version of HTTP that uses encryption via SSL and TCP port 443 to securely transmit sensitive information like usernames and passwords over insecure networks like the internet.
The document provides an overview of the responsibilities and functions of the Genie-PCIe data link layer. The data link layer is responsible for reliable transmission of transaction layer packets (TLPs) between the physical and transaction layers. It handles flow control initialization, sequencing, buffering, error detection and recovery for transmitted TLPs using ACK/NAK protocols and data link layer packets (DLLPs). The data link control state machine manages the link status and ensures proper initialization and maintenance of the link.
OpenID Connect is the newest iteration of the OpenID Internet authentication standard that’s been developed in coordination by Google, Facebook, Microsoft and others at the OpenID Foundation.
OpenID Connect performs many of the same tasks as OpenID 1 & 2, but does so in a way that is API-friendly, and usable by native and mobile applications.
OpenID 1 and 2 lend part of their name, but Connect is a complete re-write that is fundamentally better architected for the modern web in a few important ways.
Digital signatures provide authenticity, integrity, and non-repudiation for electronic documents. They use asymmetric cryptography with a private key for signing and public key for verification. The signer uses their private key to encrypt a hash of the message, creating a digital signature. The recipient can then decrypt the signature with the signer's public key to verify the message has not been altered. Hardware tokens like smart cards and USB tokens store private keys securely. The Controller of Certifying Authorities licenses and monitors Certifying Authorities in India that issue digital signature certificates.
This document discusses techniques for analyzing malware network signatures and developing effective network countermeasures. It describes using firewalls, proxies, and intrusion detection systems to filter malicious traffic. Deep packet inspection can detect malware beacons hidden in layers like HTTP user-agents. The document advises passively monitoring real infected networks to understand malware without tipping off attackers. It also provides methods for safely investigating attackers online anonymously. Analyzing how malware generates domain names and URLs can reveal signatures to detect similar strains. The goal is to create general signatures that still work if the malware evolves while avoiding false positives.
The document provides an overview of SSH (Secure Shell), including what it is, its history and architecture, how to install and configure it, use public-key authentication and agent forwarding, and set up port forwarding tunnels. SSH allows securely executing commands, transferring files, and accessing systems behind firewalls.
Kerberos is a network authentication protocol that was developed at MIT in the 1980s to allow nodes communicating over an insecure network to verify each other's identity. It uses tickets and session keys to allow clients and servers to communicate over a non-secure network and establish the identity of the users and servers. The Kerberos authentication process involves three main exchanges between the client, authentication server (KDC), and target server to authenticate users and allow access to services.
SSH is a protocol for secure remote access to a machine over untrusted networks.
SSH is a replacement for telnet, rsh, rlogin and can replace ftp.
Uses Encryption.
SSH is not a shell like Unix Bourne shell and C shell (wildcard expansion and command interpreter)
This document provides an overview of digital signatures, including what they are, why they are used, how the technology works, and some challenges. A digital signature is a hash of a message encrypted with a private key, allowing the authenticity and integrity of electronic documents and messages to be verified using the corresponding public key. Digital signatures provide authentication, integrity, and non-repudiation for electronic communications and help enable the internet as a secure medium for transactions, though key security and certification costs present challenges. The document also reviews digital signature algorithms, applications, and drawbacks.
Wireshark is a free and open-source packet analyzer that allows users to capture and analyze network traffic. It can be used to troubleshoot network problems, analyze network security issues, and debug protocol implementations. Wireshark has both a graphical user interface and command line interface and supports filtering, sorting, and color-coding packets to help users analyze network traffic.
Digital signatures use asymmetric cryptography to authenticate digital messages. They allow a recipient to verify the identity of the sender and confirm the message has not been altered. A digital signature scheme involves key generation, signing, and verification algorithms. Digital signatures provide authentication, integrity, and non-repudiation and are commonly used for software distribution, financial transactions, and other cases requiring detection of forgery or tampering. They offer advantages over traditional ink signatures like inability to forge or erase the signature.
Key management and distribution are complex due to cryptographic, protocol, and management issues. Symmetric schemes require parties to share a secret key, while public key schemes require parties to acquire valid public keys. This document discusses several methods for distributing keys, including using symmetric encryption, public key encryption, public announcements, directories, authorities, and certificates signed by certificate authorities.
Telnet is an early network protocol that allows text-based access to remote systems but lacks security features. It works at the application layer and provides bidirectional interactive text communication through a virtual terminal connection. SSH was developed as a secure replacement for Telnet, supporting encryption, authentication, and integrity to prevent eavesdropping and spoofing. It uses public/private key cryptography to securely transmit data and authenticate systems. While still used occasionally, SSH is now generally preferred over Telnet for remote access due to its enhanced security.
This document provides an overview of Kerberos, an authentication protocol used to securely identify clients within a non-secure network. It discusses Kerberos' design which includes clients, a Key Distribution Center (KDC) consisting of an authentication and ticket granting server, and services. It also defines common Kerberos terms and describes how Kerberos works by having the KDC issue tickets to allow clients access to services. Key features of Kerberos include centralized credential management and reduced protocol weaknesses. A limitation is that compromising the KDC puts the entire infrastructure at risk.
Digital signatures provide authentication and integrity for electronic documents and transactions. They use public key cryptography where a document is encrypted with the sender's private key and decrypted by the recipient's public key. A digital certificate issued by a certificate authority binds the signer's identity to their public key and is verified using the CA's digital signature. Common uses of digital signatures include software updates, financial transactions, and legally binding documents.
This document discusses the Kerberos authentication protocol. It provides a high-level overview of Kerberos, including its history, terminology, working, environment, database, and administrator. Kerberos provides strong authentication for physically insecure networks using trusted third parties and time-stamped tickets. While it ensures passwords are not sent in the clear, Kerberos is vulnerable if users choose poor passwords and relies on all machines being designed for its authentication.
Digital signatures provide authentication of digital documents by using asymmetric cryptography algorithms like RSA. Digital signatures demonstrate that a message was created by a known sender and was not altered in transit. They are commonly used for software distribution, financial transactions, and anywhere unaltered authentication is important. Digital signatures work by using public and private keys to encrypt a hash of the message, validating the source and integrity of the signed document.
Telnet is a network protocol used to provide bidirectional interactive text communication over TCP. It allows connecting a client (with display and keyboard) to a remote command line interface. Telnet uses ASCII encoding and negotiates options to support advanced functions. While it provided remote access historically, security issues have led to decreased use for that purpose in favor of SSH.
HTTP is a client-server protocol that allows web browsers to request web pages from servers using requests and responses. Clients usually use GET or POST methods to request resources from servers using TCP port 80, and servers respond with status messages and the requested content. HTTPS is a secure version of HTTP that uses encryption via SSL and TCP port 443 to securely transmit sensitive information like usernames and passwords over insecure networks like the internet.
The document provides an overview of the responsibilities and functions of the Genie-PCIe data link layer. The data link layer is responsible for reliable transmission of transaction layer packets (TLPs) between the physical and transaction layers. It handles flow control initialization, sequencing, buffering, error detection and recovery for transmitted TLPs using ACK/NAK protocols and data link layer packets (DLLPs). The data link control state machine manages the link status and ensures proper initialization and maintenance of the link.
OpenID Connect is the newest iteration of the OpenID Internet authentication standard that’s been developed in coordination by Google, Facebook, Microsoft and others at the OpenID Foundation.
OpenID Connect performs many of the same tasks as OpenID 1 & 2, but does so in a way that is API-friendly, and usable by native and mobile applications.
OpenID 1 and 2 lend part of their name, but Connect is a complete re-write that is fundamentally better architected for the modern web in a few important ways.
Digital signatures provide authenticity, integrity, and non-repudiation for electronic documents. They use asymmetric cryptography with a private key for signing and public key for verification. The signer uses their private key to encrypt a hash of the message, creating a digital signature. The recipient can then decrypt the signature with the signer's public key to verify the message has not been altered. Hardware tokens like smart cards and USB tokens store private keys securely. The Controller of Certifying Authorities licenses and monitors Certifying Authorities in India that issue digital signature certificates.
This document discusses techniques for analyzing malware network signatures and developing effective network countermeasures. It describes using firewalls, proxies, and intrusion detection systems to filter malicious traffic. Deep packet inspection can detect malware beacons hidden in layers like HTTP user-agents. The document advises passively monitoring real infected networks to understand malware without tipping off attackers. It also provides methods for safely investigating attackers online anonymously. Analyzing how malware generates domain names and URLs can reveal signatures to detect similar strains. The goal is to create general signatures that still work if the malware evolves while avoiding false positives.
The document provides an overview of SSH (Secure Shell), including what it is, its history and architecture, how to install and configure it, use public-key authentication and agent forwarding, and set up port forwarding tunnels. SSH allows securely executing commands, transferring files, and accessing systems behind firewalls.
Kerberos is a network authentication protocol that was developed at MIT in the 1980s to allow nodes communicating over an insecure network to verify each other's identity. It uses tickets and session keys to allow clients and servers to communicate over a non-secure network and establish the identity of the users and servers. The Kerberos authentication process involves three main exchanges between the client, authentication server (KDC), and target server to authenticate users and allow access to services.
SSH is a protocol for secure remote access to a machine over untrusted networks.
SSH is a replacement for telnet, rsh, rlogin and can replace ftp.
Uses Encryption.
SSH is not a shell like Unix Bourne shell and C shell (wildcard expansion and command interpreter)
This document provides an overview of digital signatures, including what they are, why they are used, how the technology works, and some challenges. A digital signature is a hash of a message encrypted with a private key, allowing the authenticity and integrity of electronic documents and messages to be verified using the corresponding public key. Digital signatures provide authentication, integrity, and non-repudiation for electronic communications and help enable the internet as a secure medium for transactions, though key security and certification costs present challenges. The document also reviews digital signature algorithms, applications, and drawbacks.
Wireshark is a free and open-source packet analyzer that allows users to capture and analyze network traffic. It can be used to troubleshoot network problems, analyze network security issues, and debug protocol implementations. Wireshark has both a graphical user interface and command line interface and supports filtering, sorting, and color-coding packets to help users analyze network traffic.
Digital signatures use asymmetric cryptography to authenticate digital messages. They allow a recipient to verify the identity of the sender and confirm the message has not been altered. A digital signature scheme involves key generation, signing, and verification algorithms. Digital signatures provide authentication, integrity, and non-repudiation and are commonly used for software distribution, financial transactions, and other cases requiring detection of forgery or tampering. They offer advantages over traditional ink signatures like inability to forge or erase the signature.
This document certifies that Dan'n Scotty Delissaint has successfully completed the requirements for Cisco Certified Network Associate Routing and Switching certification. The certification is valid through December 30, 2018 and can be verified online using the provided certificate number and verification code. The certification was issued and signed by Chuck Robbins, CEO of Cisco Systems.
Lo que el corazon quiere la mente se lo muestraLUZ M.
Este resumen presenta las ideas principales de una entrevista al Dr. Mario Alonso Puig sobre cómo los pensamientos influyen en el cuerpo y el cerebro. El Dr. Puig explica que los pensamientos positivos pueden mejorar el funcionamiento del cerebro mientras que los negativos lo dañan. Además, señala que es posible cambiar el cerebro entrenando la mente a través de la respiración, las palabras y la aceptación.
Este documento presenta cuatro escenarios para el diseño, operación y rentabilidad de una planta de biodigestión anaerobia para una granja de cerdos ibéricos de 7,500 cabezas. Los escenarios incluyen: almacenamiento de purines en fosos o balsas, y codigestión con subproductos de biodiésel. La planta produciría biogás para generar energía eléctrica, con tiempos de amortización de 2.5-30 años dependiendo del escenario.
Este documento propone un modelo de instrucción para desarrollar el liderazgo en estudiantes de quinto grado a través del uso de herramientas de la web 2.0. El objetivo es que los estudiantes demuestren sus habilidades para pensar, actuar y servir a la sociedad. Se implementarán actividades individuales y grupales en las que los estudiantes investiguen sobre el liderazgo, creen presentaciones y cartillas, y compartan sus trabajos en línea. El modelo aplica un enfoque constructivista globalizado y busca evaluar las competencias
Este documento describe la clasificación y propiedades de los triángulos. Explica que los triángulos se pueden clasificar según sus lados y ángulos, y que la suma de los ángulos interiores de cualquier triángulo es 180 grados. También indica que un triángulo rectángulo tiene la mitad de la suma de ángulos de un rectángulo, que es 180 grados.
El documento habla sobre los Entornos Personales de Aprendizaje (PLE). Explica que los PLE ayudan a los estudiantes a tomar control de su propio aprendizaje a través del uso de las TIC. Surgen de la necesidad de que las personas puedan seguir aprendiendo de manera autónoma a lo largo de su vida y gracias al rápido desarrollo de la tecnología. Los PLE se fundamentan en que cada persona aprende de manera diferente y a su propio ritmo. Consisten en que los estudiantes fijen sus propi
El documento habla sobre la comunicación y tecnología de las redes en la década de 1980. Menciona que la tecnología de las redes ha avanzado rápidamente, permitiendo mayores velocidades y almacenamiento. También destaca que la tecnología es una herramienta poderosa que puede usarse para propagar conocimiento y mejorar la educación.
Event Based Network Monitoring System with FloodLight SDN Controller and Open...Ali Ben Messaoud
L’objectif de ce projet consiste à superviser un réseau en se basant sur les évènements en utilisant le Software-Defined Networking et Floodlight, un contrôlleur OpenFlow en Java.
Cloud Computing is a general term used to describe a new class of network based computing that takes place over the Internet,
a collection/group of integrated and networked hardware, software and Internet infrastructure.
provides hardware, software and networking services to clients.
These platforms (networked hardware) hide the complexity to provide a very simple service.
Cloud Computing is a general term used to describe a new class of network based computing that takes place over the Internet,
a collection/group of integrated and networked hardware, software and Internet infrastructure.
provides hardware, software and networking services to clients.
These platforms (networked hardware) hide the complexity to provide a very simple service.
Système permettant de gérer les modifications d’un ensemble de données.
Il agit sur une arborescence de fichiers afin de conserver toutes les versions des fichiers, ainsi que les différences entre les fichiers.
Un groupe de développeurs autour d'un même développement se servira de l'outil pour stocker toute évolution du code source.
Formation M2i - Onboarding réussi - les clés pour intégrer efficacement vos n...M2i Formation
Améliorez l'intégration de vos nouveaux collaborateurs grâce à notre formation flash sur l'onboarding. Découvrez des stratégies éprouvées et des outils pratiques pour transformer l'intégration en une expérience fluide et efficace, et faire de chaque nouvelle recrue un atout pour vos équipes.
Les points abordés lors de la formation :
- Les fondamentaux d'un onboarding réussi
- Les outils et stratégies pour un onboarding efficace
- L'engagement et la culture d'entreprise
- L'onboarding continu et l'amélioration continue
Formation offerte animée à distance avec notre expert Eric Collin
Conseils pour Les Jeunes | Conseils de La Vie| Conseil de La JeunesseOscar Smith
Besoin des conseils pour les Jeunes ? Le document suivant est plein des conseils de la Vie ! C’est vraiment un document conseil de la jeunesse que tout jeune devrait consulter.
Voir version video:
➡https://youtu.be/7ED4uTW0x1I
Sur la chaine:👇
👉https://youtube.com/@kbgestiondeprojets
Aimeriez-vous donc…
-réussir quand on est jeune ?
-avoir de meilleurs conseils pour réussir jeune ?
- qu’on vous offre des conseils de la vie ?
Ce document est une ressource qui met en évidence deux obstacles qui empêchent les jeunes de mener une vie épanouie : l'inaction et le pessimisme.
1) Découvrez comment l'inaction, c'est-à-dire le fait de ne pas agir ou d'agir alors qu'on le devrait ou qu'on est censé le faire, est un obstacle à une vie épanouie ;
> Comment l'inaction affecte-t-elle l'avenir du jeune ? Que devraient plutôt faire les jeunes pour se racheter et récupérer ce qui leur appartient ? A découvrir dans le document ;
2) Le pessimisme, c'est douter de tout ! Les jeunes doutent que la génération plus âgée ne soit jamais orientée vers la bonne volonté. Les jeunes se sentent toujours mal à l'aise face à la ruse et la volonté politique de la génération plus âgée ! Cet état de doute extrême empêche les jeunes de découvrir les opportunités offertes par les politiques et les dispositifs en faveur de la jeunesse. Voulez-vous en savoir plus sur ces opportunités que la plupart des jeunes ne découvrent pas à cause de leur pessimisme ? Consultez cette ressource gratuite et profitez-en !
En rapport avec les " conseils pour les jeunes, " cette ressource peut aussi aider les internautes cherchant :
➡les conseils pratiques pour les jeunes
➡conseils pour réussir
➡jeune investisseur conseil
➡comment investir son argent quand on est jeune
➡conseils d'écriture jeunes auteurs
➡conseils pour les jeunes auteurs
➡comment aller vers les jeunes
➡conseil des jeunes citoyens
➡les conseils municipaux des jeunes
➡conseils municipaux des jeunes
➡conseil des jeunes en mairie
➡qui sont les jeunes
➡projet pour les jeunes
➡conseil des jeunes paris
➡infos pour les jeunes
➡conseils pour les jeunes
➡Quels sont les bienfaits de la jeunesse ?
➡Quels sont les 3 qualités de la jeunesse ?
➡Comment gérer les problèmes des adolescents ?
➡les conseils de jeunes
➡guide de conseils de jeunes
Impact des Critères Environnementaux, Sociaux et de Gouvernance (ESG) sur les...mrelmejri
J'ai réalisé ce projet pour obtenir mon diplôme en licence en sciences de gestion, spécialité management, à l'ISCAE Manouba. Au cours de mon stage chez Attijari Bank, j'ai été particulièrement intéressé par l'impact des critères Environnementaux, Sociaux et de Gouvernance (ESG) sur les décisions d'investissement dans le secteur bancaire. Cette étude explore comment ces critères influencent les stratégies et les choix d'investissement des banques.
Cycle de Formation Théâtrale 2024 / 2025Billy DEYLORD
Pour la Saison 2024 / 2025, l'association « Le Bateau Ivre » propose un Cycle de formation théâtrale pour particuliers amateurs et professionnels des arts de la scène enfants, adolescents et adultes à l'Espace Saint-Jean de Melun (77). 108 heures de formation, d’octobre 2024 à juin 2025, à travers trois cours hebdomadaires (« Pierrot ou la science de la Scène », « Montage de spectacles », « Le Mime et son Répertoire ») et un stage annuel « Tournez dans un film de cinéma muet ».
Newsletter SPW Agriculture en province du Luxembourg du 12-06-24BenotGeorges3
Les informations et évènements agricoles en province du Luxembourg et en Wallonie susceptibles de vous intéresser et diffusés par le SPW Agriculture, Direction de la Recherche et du Développement, Service extérieur de Libramont.
Le fichier :
Les newsletters : https://agriculture.wallonie.be/home/recherche-developpement/acteurs-du-developpement-et-de-la-vulgarisation/les-services-exterieurs-de-la-direction-de-la-recherche-et-du-developpement/newsletters-des-services-exterieurs-de-la-vulgarisation/newsletters-du-se-de-libramont.html
Bonne lecture et bienvenue aux activités proposées.
#Agriculture #Wallonie #Newsletter #Recherche #Développement #Vulgarisation #Evènement #Information #Formation #Innovation #Législation #PAC #SPW #ServicepublicdeWallonie
2. Plan
Histoire de SSH
Qu'est ce que SSH?
SSH vs les autres
Les fonctions de SSH
Les avantages de SSH
Les programmes de SSH
Méthodes d'authentification
Les services offerts
Fonctionnement de SSH
3. Terminologie
Il faut distinguer :
● SSH : le protocole de communication
● ssh : le programme client permettant de se
connecter au serveur
● sshd : le serveur (ssh daemon)
4. Histoire de SSH?
● Créé par Ylönen Tatu en Juillet 1995, un
étudiant de l'Université de technologie
d'Helsinki
● Il était open source initialement jusqu'à
1999.
● OpenSSH (existe dans tous les
distributions Linux) a été crée en 1999
comme un fork de la dernière version
open source du code SSH.
5. Qu'est ce que SSH?
● SSH n'est pas un shell Unix comme
Bourne shell et shell C
● SSH est un protocole qui permet de se
connecter de façon sécurisée à un
système Mac, Linux ou Windows.
● Utilise le cryptage (Secure Shell).
○ Sécuriser une connexion
6. Qu'est-ce qui ne va pas avec
telnet et tout autres protocoles?
● Envoyer toutes les données en texte clair.
● Un hôte entre emetteur et recepteur peut
voir tout le traffic(man in the middle)
7. Fonctions de SSH
● Vient pour remplacer rsh, rlogin, telnet...
● Éviter la circulation en clair sur le réseau
de tout type de données.
● Sécuriser l'exécution des commandes à
distance et le transfert de données.
● Compresser le trafic
● Port Forwarding.
● Tunneling.
8. Les avantages de SSH
SSH permet de garantir :
● La confidentialité : le chiffrement des
paquets permet de garantir celle-ci.
● L'intégrité : SSH permet de garantir que les
paquets circulant d'un hôte vers un autre ne
sont pas altérés.
● L'authentification : chaque connexion SSH
vérifie l'identité du serveur puis celle du
client.
9. Principaux programmes de SSH
● ssh est le client
● sshd est le serveur
● Session
● Si sshd ne fonctionne pas vous ne serez
pas en mesure de se connecter.
10. Méthodes d'authentifications SSH
● On distingue trois méthodes :
○ Mot de passe
○ Couple clés Public/Private
■ Cryptage asymetrique
○ Par hôte
12. Authentification par pair de clés
Cette méthode utilise ce qu'on appelle une « pair de clés », c'est-
à-dire un code qui vous identifie sans avoir à taper de mot de
passe.
14. Les services offerts par SSH
● Secure Command Shell
○ lister, editer le contenu des répertoires
○ créer des comptes d'utilisateur
○ changer les permissions et droits d'accès.
● Port Forwarding
○ Associer à un port dans notre machine un autre port
● Tunneling
○ Un tunnel représente une connexion
traversant plusieurs interfaces de manière
transparente pour le client et le serveur.
● Secure File Transfer (SFTP)