RST (TCP-RST) is a flag in the TCP header. It indicates that the sender terminates the session. When the ACK flag isn't set contemporaneous, the termination happens due to an error.
Questions tagged [rst]
32 questions
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Why do I see an IP packet with size 2960, way above the MTU setting of 1500 on the interface and it gets through?
I am analyzing traffic between a client and a Linux webserver running on a HP blade server, the client sometimes gets stuck waiting for more data when the webserver has closed the connection.
The webserver runs apache2 that for some reason choses to…

ernelli
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Kernel send RST when data receive on another interface
I'm facing an issue when my server receive data from another interface than he use to join another server.
I have one server (10.55.0.5). This server have multiple NIC and I cannot be sure that response will come on same interface everytime (due to…

JDR
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Client sends TCP ACK FIN right after successful TLS Handshake
I have a problem with one of my virtualhost.
My config:
a reverse proxy with Centos 7 + apache 2.4 and a backend with Microsoft IIS 6.0.
When I do a curl from the proxy to the virtualhost (curl -k https://blabla.com/) I get a proxy error:

Julien Nyczak
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TCP RST in when inititating AMQP handshake [rabbitmq-c]
I'm running rabbitmq-c v0.8.0 on an OpenWRT (ar71xx), in a device acting as a client in a LAN.
The same system seems to behave differently behind different routers.
The problems I'm seeing are (this is part of my code):
_socket =…

Pipetus
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1 answer
RST ACK with Reset cause
We have a device that connects over Wired LAN (Ethernet) to our cloud servers.
At certain customer locations, when the device tries to send data, we are getting RST ACK from the customer server to our cloud server with a reset cause.
I am not able…

Hardik Sanghavi
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Should I defrag RAID Array with SSD caching(Intel SRT)?
I have an SSD in system and a RAID 0 array with SSD caching turned on(Intel SRT or Intel Smart Response Tech.).
Should i defrag it?
Also have a problems with windows defragmentator. It detects my raid array as SSD and was not able to defrag it. So…

Ruslan F.
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1 answer
TCP RST Reset Every 5 Minutes on Windows 2003 sp2
Recently I had a web developer come to me and ask why he was receiving connection errors in his app that was accessing a sql database.
So, I went through my normal trouble shooting steps to isolate or reproduce the issue. I discovered that if I…
Dan
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Intel RST Raid 5 with 6 HDDs incredible slow
maybe someone can help.
Since I upgrade our Raid5 from 4 to 6 HDDs the write-performance is VERY poor.
Read is more than 700 MB/s but write is less than 30 MB/s
Cache-Modus is Write-Back
System specifications:
Asrock H370M-ITX/ac
32 GB RAM DDR4
WD…

dj wurst
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RST packet and server behavior
If a client send one RST packet to a server, how will the server react?
Client ----RST----> Server
Does the server close the connexion immediatly or does it wait for another packet to be received?
A)
Client ----RST----> Server
Client <---RST---- …

JoeJoe
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Who is injecting TCP RST packets?
I work for a very large organisation and I am having issues with a device injecting RST packets to cut off a connection from one of my servers to another. I suspect it is some sort of anti-virus because I'm transferring an e-mail with an unusual…

mjaggard
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TCP [RST,ACK] ignored
I have a Windows 2008 server and an application that connects over Internet to it.
From time to time I see that I receive a TCP [RST, ACK] that is ignored by my application.
Using TCPViewer I still can see that connection still up.
I did different…

Adrian R
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1 answer
What packet to ignore to not have ssh terminated on brief connectivity loss?
It seems like sometimes there are some connectivity problems around the edge of our network to certain other networks, and my ssh sessions with some remote servers, which themselves have no connectivity issues, drop.
Remotely, the sessions still…

cnst
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Is it possible to change disk in RAID0 array of Intel Rapid Storage Tehnology?
My BIOS started to report red line with error for one of 2 drives in RAID0 array during boot.
But file system appears to be working without any visible problems, so I was able to make system image and necessary backups.
I want to purchase same size…

alpav
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Understanding TCP RST Network Capture
I only really need help understand the following image, but I will give the background for context.
We have an app that is configured to use a proxy on port 8080 and requires Internet access. At random times throughout the day, the app fails to…

Mucker
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TCP session refused immediately after accepting it
Host_A tries to send some data to Host_B over TCP. Host_B is listening on port 4712. Host_A is a remote PC connected on a dedicated WAN. Host_B is a local embedded device based on embOS OS, connected to the WAN throuth a pair of redundant (HSRP)…

robocat
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