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Juan Miguel Cano October 12, 2023

Class 7

Readings: Network Connectivity

Below, you will find some reading materials and videos that support today’s topic and the upcoming lecture. Reading

SSH Protocol

1. What is the Secure Shell (SSH) Protocol?

The SSH Protocol is a secure remote login and file transfer method offering strong authentication, encryption, and data integrity. It is used for secure access, file transfers, and remote command execution.

2. What are the typical uses of the SSH protocol?

• Providing secure access for users and automated processes. • Interactive and automated file transfers. • Issuing remote commands. • Managing network infrastructure and critical system components.

3. How does the SSH protocol work?

The SSH protocol works in a client-server model. The client initiates a connection using public key cryptography to verify the server's identity. Symmetric solid encryption and hashing algorithms secure data exchange between the client and server, ensuring privacy and integrity.

4. How is the data kept safe when transmitted between the SSH client and server?

• Data is kept safe during transmission in SSH through:

  1. Strong Encryption: SSH uses symmetric solid encryption algorithms like AES.
  2. Data Integrity: Standard hash algorithms like SHA-2 ensure data is not tampered with.
  3. Secure Key Exchange: Public key cryptography verifies the server's identity and securely exchanges keys.
  4. Encrypted Channel: All data transferred over the connection is encrypted, preventing eavesdropping.

5. What is SFTP?

SFTP stands for "SSH File Transfer Protocol." It is a secure file transfer protocol that runs over SSH. SFTP provides a secure way to transfer files between computers, ensuring data encryption and integrity. It is a safer alternative to traditional FTP for secure file transfers.

What is RDP? And how to use it?

• RDP (Remote Desktop Protocol) is a Microsoft-developed protocol for remote computer access. To use it: o Enable RDP on the host computer. o Find the host computer's IP address or hostname. o Use an RDP client on your computer to connect. o Enter host details and connect. o Interact with the host computer remotely.

1. What is Windows Remote Desktop Connection?

Windows Remote Desktop Connection is a built-in feature in Microsoft Windows that allows users to connect to a remote Windows-based computer over a network connection. It enables remote access and control of a remote computer as if you were physically in front of it. This feature is commonly used for remote administration, technical support, or accessing your computer from a different location.

2. What is RDP?

RDP (Remote Desktop Protocol) is a Microsoft-developed protocol for remote computer access

3. What is the RDP port number?

The default port number for RDP (Remote Desktop Protocol) is 3389. This port is used for RDP connections on Windows-based computers. However, it is essential to note that changing the default RDP port to a non-standard port is often recommended for security reasons to help protect against unauthorized access and security threats.

Resources Used:

https://www.ssh.com/ssh/protocol/

https://www.comparitech.com/net-admin/what-is-rdp/

Lab: https://docs.google.com/document/d/13LmuhP1GhtvK2DzMYJ5BWOOcwsfJvzkDFvJsj4YGVko/edit?usp=sharing