What is a TCP connection timeout? (2024)

A TCP timeout in Operations systems or firmware refers to the time a system waits for a response to be acknowledged before the connection is terminated. The TCP keepalive timeout prevents broken connections from being left open indefinitely and protect our system from TCP SYN attack or TCP session overflow.TCP timeout automatically adjust base on TTL of connection.

TCP operates like a conversation between computers. It initiates communication, breaks data into segments, performs sequencing and error checking. Through acknowledgment and retransmission mechanisms, it ensures the secure transfer of data, guaranteeing a robust and orderly communication between the involved devices.

A TCP connection timeout basically occurs when a TCP connection is failed to be established within a pre specified time. The time to stop sending connection establishment packets depends on the environment cloud on premise, LAN, WAN etc.

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TCP connection timeout occurs when two devices attempt to establish a connection, but the acknowledgment of the connection request isn't received within a certain timeframe. Imagine it as a virtual handshake – if one device extends its hand to shake, but the other doesn't respond within the expected time, the initiating device assumes something went wrong and decides to give up on the connection. This timeout is crucial for network efficiency, preventing resources from being indefinitely tied up in unsuccessful connection attempts. It's like waiting for a reply to a message – if it takes too long, you might assume something went wrong and move on.

Au delà d'une connexion TCP, pour moi, le temps d'ouverture d'une session (HTTP) est proportionnel :A la capacité d'usurpation d'identité type man in the middle. Cela laisse le temps de...A la capacité de raréfaction des ressources type déni de service

Translated

TCP connections occur at the Transport layer (Layer 4) of the OSI model. Configuration of TCP connection timeout can vary depending on if they are on-premises based L2/L3 network devices or stateful firewalls. TCP keep alive is a mechanism defined in RFC 1122 that can keep idle connections alive. The actual connection time-outs can range from 350 seconds on AWS cloud based network appliances such as NAT Gateways, GWLB, NLB, VPC Endpoints to about 7200 seconds (2 hours) on Linux based OS. For example, AWS networking and security best practices recommend deployment of virtual appliance in VPC, PrivateLink to avoid internet exposure. Traditional methods such as access control, encryption, monitoring and feedback loop to reduce attack vectors.

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Remember: TCP/IP is never invented to make secure connection. The protocol is adopted to the world, but also, through it's way to flow and behaves one of the most vulnerable protocols. But we can not go back unfortunately.

Here you are, reading a Linked-in AI collaborative essay on TCP connection timeouts.What went wrong in your life?I'm not saying that TCP isn't worth talking about. I'm saying that this is the wrong place for you to be looking for information about timeouts, windows, and the delay-bandwidth product. (Yes, they are all related.)These essays are not written by experts. Well, they might be, but there's no guarantee. L-I doesn't review these for accuracy. They don't even run a spelllling checker over them. This is the wrong place to be looking for the answer.Linked-In is good for two things: networking prior to a new job (or new hire), and talking about business ethics. Ethics turns out to be the subtext of nearly all discussions here.