Hamid Salamat on LinkedIn: #hamid_salamat #tcpip #networking #protocols | 15 comments (2024)

#snsinstitutions #snsdesignthinkers #snsdesignthinking User datagram protocalUser Datagram Protocol (UDP) is a Transport Layer protocol. UDP is a part of the Internet Protocol suite, referred to as UDP/IP suite. Unlike TCP, it is an unreliable and connectionless protocol. So, there is no need to establish a connection prior to data transfer. The UDP helps to establish low-latency and loss-tolerating connections establish over the network.The UDP enables process to process communication.Source Port: Source Port is a 2 Byte long field used to identify the port number of the source.Destination Port: It is a 2 Byte long field, used to identify the port of the destined packet.Length: Length is the length of UDP including the header and the data. It is a 16-bits field.Checksum: Checksum is 2 Bytes long field.

Out of all the Network layers Transport Layer is my favorite with TCP and UDP #networkprotocols. Some of the notes from my class #computernetworking TCP(Transmission Control Protocol) is full-featured protocol as it provides reliability, flow control and ensures that all of the data arrives at the destinationUDP(User Datagram Protocol) is a conncetionless protocol as it does not provide reliability or flow controlThanks to my teacher Sergio Calderon always being so helpful and reliable to the class like TCP protocol🤝

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Lost in the web of protocols? Our Upskill session was all about learning how to navigate the web of protocols.🚀Key Insights:-The layers of common protocols – HTTP, TCP/IP, and beyond .-Demystify the symbiotic relationship between protocols and connectivity.-Acquire a nuanced understanding of optimising protocol usage.Be a problem-solver with Upskill!🌟#protocols #tkxelupskill #learntogrow #learntosucceed #upskillforfuture #upskill #tkxel

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Electrolink FM/DAB/TV Transmitter Pre-Auth MPFS Image Remote Code Execution: Electrolink FM/DAB/TV Transmitter allows access to an unprotected endpoint that allows an MPFS File System binary image upload without authentication. The MPFS2 file system module provides a light-weight read-only file system that can be stored in external EEPROM, external serial Flash, or internal Flash program memory. This file system serves as the basis for the HTTP2 web server module, but is also used by the SNMP module and is available to other applications that require basic read-only storage capabilities. This can be exploited to overwrite the flash program memory that holds the web server's main interfaces and execute arbitrary code.

🚦 TCP and UDP: Traffic Directors in the Digital World! 🌐Transport Layer (Layer 4).TCP (Transmission Control Protocol):Think of TCP as a meticulous postman. When your computer wants to send a message or data, TCP ensures it reaches the destination intact and in the correct order.It's like sending a letter and making sure the recipient gets all the pages and reads them in order.UDP (User Datagram Protocol):Now, UDP is more like a speedy courier. It delivers messages quickly but might not guarantee they arrive perfectly. It's great for things like live video streaming where a slight delay is okay.It's like sending postcards—quick and efficient, but not always ensuring every detail.🤝 Three-Way Handshake: The Digital Greeting! 🤝"Hey, You There?" (SYN): Your device says to the other, "Can we talk?" This is the SYN (Synchronize) message."Yeah, I'm Here!" (SYN+ACK): The other device responds, "Sure, let's talk!" This is SYN+ACK (Synchronize-Acknowledge)."Let's Chat!" (ACK): Your device confirms, "Great, let's start talking!" This is ACK (Acknowledge).It's like a polite digital handshake before a conversation begins. TCP uses this to establish a reliable connection, making sure both devices are ready to exchange information.In summary, TCP and UDP are like different types of mail services, and the Three-Way Handshake is the digital introduction before they start sharing information! 📬🌐

UDP (User Datagram Protocol) is known for being faster and more up-to-date, yet many systems still rely on TCP (Transmission Control Protocol) to download batches of information. Users will need to take a look at their specific IP needs to make an informed decision about which protocol is best for them.#communication #internet

User datagram protocol (UDP) is one of the communication protocols of the Internet protocol suite used to send messages to other hosts on an Internet Protocol network. Within an IP network, UDP does not require prior communication to set up communication channels or data paths. UDP, is a communication protocol used across the Internet for especially time-sensitive transmissions such as video playback or DNS lookups. Messages uses this protocol need to be verified it's working perfectly because it's not a yes or no protocol. #careerdemy Careerdemy Archibong Edet

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Network Services: The Router and NAT.A router inspects the contents of an IP datagram, decrement the TTL(Time To Live) by one, recalculate the Checksum and forward the rest of the data at the network layer without touching it.NAT(Network Address Translation), the router rewrites the source IP address.#networkinfrastructure #computernetworking #computerscience #osimodel #technicalsupport

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In my last few posts, I have talked about how TCP manages lost segments and retransmission using sequence numbers and acknowledge numbers. What if segments are received in correct order, but are corrupted. How does TCP know what segments are corrupt and need to be discarded?Checksum comes to rescue here. When TCP layer of sender wants to send a TCP segment, it calculates something called checksum using the same segment's headers and data and attaches it to the same segment as a header, then transmits it. At the receiver end, TCP uses same algorithm as the sender to recalculate the checksum again. Two checksums, one computed by the receiver, another sent by the sender as TCP header are compared. If they match, it proves that the segment sent is valid and not corrupted, if not, the receiver discards the segment without sending acknowledgement to the sender. Sender triggers a retransmission if acknowledgement is not received within a precalculated time and the segment is retransmitted. All these things make TCP a robust protocol and that the data is delivered in a reliable way.#computernetworks #computernetworking #computerscience #problemsolving #tcp #tcpip #http #learningeveryday

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NAT Virtual Interface.ip nat inside or ip nat outside = ip nat enable. "Ip nat enable" this command is used to enable NAT on an interface. This command automatic figures out whether the interface is inside or outside based on the source IP addresses of packets.From IOS version 12.3(14)T, Cisco has introduced a new feature called NAT Virtual Interface.NVI removes the requirements to configure an interface as either NAT inside or NAT outside.In this lab using NAT Overload:Use the command "ip nat source list {} interface {} overload" without specifying the inside or outside tag and enable the nat to the interfaces using the command "ip nat enable".To check NVI statistics and translations use these commands.show ip nat nvi translationsshow ip nat nvi statisticsNote:Nvi interface is used ONLY when the ‘ip nat enable’ is enabled.Stateful Network Address Translation (SNAT) is not supported.ip nat enable cannot translate local router traffic.

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