Stream of Knowledge

A port number is a unique identifier for specific processes or services on a networked server, crucial for directing incoming internet or network messages to the appropriate application. In the context of Transmission Control Protocol (TCP) and User Datagram Protocol (UDP), a port number is a 16-bit integer included in the message header. Key Port Numbers and Their Functions: 1. FTP - File Transfer Protocol Port Number: TCP 20, 21 Function: Facilitates the transfer of files between a client and a server. 2. SSH - Secure Shell Port Number: TCP 22 Function: Provides a secure login and command execution on remote machines. 3. Telnet Port Number: TCP 23 Function: Allows for unencrypted text-based communication for remote login services. 4. SMTP - Simple Mail Transfer Protocol Port Number: TCP 25 Function: Handles the routing of emails across networks. 5. DNS - Domain Name System Port Number: TCP/UDP 53 Function: Translates domain names to IP addresses for locating and identifying

protocols at each layer of OSI model The OSI (Open Systems Interconnection) reference model is a conceptual framework used to understand network interactions in seven distinct layers. Each layer has specific protocols that facilitate communication and data exchange. Let’s dive into the OSI model and explore the protocols that operate at each layer. Application layer It’s responsible for providing an interface for the user to interact with application services or network services. Ex- Web browser (HTTP), Telne Presentation layer It’s responsible for defining a standard format to the data. The major functions described at this layer are: - Encoding-Decoding Ex- AVI-(video), WAV-(voice), JPEG (graphite), ASCII (text) Encryption-Decryption Session layer It’s responsible for establishing, maintaining, and terminating the sessions. Session ID is used to identify a session or interaction. Ex- Remote procedural call, Apple talk session protocol. Transport Layer It provides data delivery me

  TROUBLESHOOTING BGP/MPLS ON CISCO AND JUNIPER DEVICES Mastering the Basics: Troubleshooting BGP/MPLS on Cisco and Juniper Devices Introduction: In the intricate world of networking, BGP (Border Gateway Protocol) and MPLS (Multi-Protocol Label Switching) are fundamental technologies that enable efficient, scalable, and robust communication across vast and diverse infrastructures. Understanding how to troubleshoot these protocols in Cisco and Juniper devices is essential for maintaining a smooth operational network. Today, we’ll dive into some practical tips to help you navigate common issues with these technologies. Understanding BGP/MPLS Basics: BGP : As the backbone of the internet, BGP makes routing decisions based on paths, network policies, or rule sets, which allows it to be very flexible and robust. However, it can also be complex and challenging to troubleshoot. MPLS : MPLS enhances the flow of traffic on a network by making data forwarding decisions based on short path labels

MPLS TROUBLESHOOTING TIPS FOR CISCO AND JUNIPER #mpls #cisco #juniper #troubleshooting #huawei #copy #tutorial Basic MPLS Troubleshooting Tips 1. Verifying MPLS Configuration: Cisco: Use  show mpls interfaces  to verify that MPLS is enabled on the correct interfaces. Check  show mpls ldp neighbor  to ensure that Label Distribution Protocol (LDP) neighbors are discovered, and that the session is up. Juniper: Use  show mpls interface  to check MPLS status on interfaces. Utilize  show mpls ldp session  to confirm LDP neighbor sessions. 2. Checking Label Switch Paths (LSP): Cisco: Use  show mpls ldp bindings  to display local and remote label bindings. show mpls forwarding-table  helps to inspect the labels being forwarded and their corresponding next-hops. Juniper: Use  show mpls lsp extensive  to get detailed information about the LSPs. show route table mpls.0  to view the label-switched routes. 3. Ensuring Proper Route Distribution: Cisco: Verify routing protocols are correctly redistri

 how to give IAM user full access in AWS console. follow below steps:   Login to console.aws.amazon.com using root user.   Search IAM on the search bar on the top as shown in figure 1.   Click on users in the left menu under access management as shown in figure 2. Steps to configure a user are shown in figure 0. Click on create user as shown in figure 3 after following figure 2 step. After following figure 3, follow figure 4 steps. Define the username, provide access to console, and select we want to create a IAM user. For the password we are using an auto generated password and enforcing that user must create a new password after first login as shown in figure 5. Set permissions as IAM full access as shown in figure 6.

Cyber Attack Countermeasures: Module 2 Quiz #cyber #quiz #course #era #answer #module 1 . Question 1 “Identification” in the process of authentication involves which of the following? 1 / 1  point Typing a password Keying in a passphrase Typing in User ID and password Typing in User ID None of the above Correct Correct! The definition of identification involves providing a user’s ID (identification). 2 . Question 2 Which of the following statements is true? 1 / 1  point Identifiers are secret Identifiers are not secret Identifiers are the secret part of authentication All of the above Correct Correct! Identifiers for users are generally not viewed by security experts as being secret. 3 . Question 3 Which of the following is not a good candidate for use as a proof factor in the authentication process? 1 / 1  point Making sure the User ID is correct Typing in a correct password Confirming location, regardless of the country you are in The movement of your hands when they type on a keybo