Questions tagged [tcp]
For questions about Transmission Control Protocol (TCP), a transport protocol used to encapsulate data across a network for reliable communication.
10
questions with no upvoted or accepted answers
2
votes
1
answer
366
views
How can I configure a Cisco router 4300 to allow internal server ip:80 to be accessed on public ip:4500
I have an internal web server on port 80. I need help commands maybe to configure port forwarding to access the server on my private network from a public IP
Current running config
interface ...
0
votes
0
answers
31
views
TCP blocked until the acknowledgment received
I am currently facing an issue in my application where the TCP messages seem to be blocked until an acknowledgment received. Specifically, the subsequent messages wait for the acknowledgment of the ...
0
votes
1
answer
34
views
Why is this RST during handshake
Hi,
We are suffering from very rare case, where the server send unexpected RST during 3 way handshake. There are two things i don't understand.
(1) 238 is a PUSH and ACK sequence, while 240 is a pure ...
- 1
0
votes
1
answer
31
views
Advice needed. Connecting to a web server on a private network; STUN/TURN, WebRTC or something else?
The problem:
The company I work for offers a hardware solution that is managed from a web interface that runs on a local network on a dedicated machine that we built.
Because of low-level constraints, ...
- 1
0
votes
0
answers
31
views
Can TCP seq number increment after sending a FIN?
I have an embedded device connecting to a server (on AWS Application ELB if that matters). Both the server and the client are instructed to close the connection after one request. I noticed that the ...
- 1
0
votes
0
answers
42
views
Why would TCP ever allow a SYN for a connection in the TIME-WAIT state?
RFC 1122 says this:
When a connection is closed actively, it MUST linger in
TIME-WAIT state for a time 2xMSL (Maximum Segment Lifetime).
However, it MAY accept a new SYN from ...
- 31
0
votes
0
answers
34
views
How is window retraction a "general" problem when segment length is less than the window scale factor?
In the RFC 7323 there is an example about window retraction:
https://datatracker.ietf.org/doc/html/rfc7323#appendix-F
The text also says this:
This is a general problem and can happen any time the ...
- 31
0
votes
0
answers
31
views
Tail Loss Probing Timer of TCP
I've been wrapping my head around how TLP timer works that helps in faster loss recovery especially when packets are lost at end of transmission thus saving RTO(Retransmit Time Out) time. In normal ...
- 13
0
votes
0
answers
87
views
Can SMALL TCP segments slow the TCP transfer rate?
Hello everybody and thanks for reading me,
I have a datacenter switch connected to 10 25G servers and running some sort of storage application (nsdperf), the problem is that we are seeing a very slow ...
0
votes
1
answer
389
views
Is it valid to send consecutive tcp packets having overlapping data?
Assuming:
TCP Window Size of client: 2000 bytes
MSS (maximum segment size) of client: 1500 bytes
Now server want to send 3000 bytes to client B1..B3000. Server sends:
Packet-1: Contains B1..B1500 ...
- 101