This will make the server send the clients a “null packet” every 120 seconds and not disconnect them until the client have been inactive for 720 intervals (120 seconds * 720 = 86400 seconds = 24 hours). You can do this by updating /etc/ssh/sshconfig (applying the setting to every. This is done via the ServerAliveInterval option for the SSH client. If you’re a server admin, you can add the following to your SSH daemon config in /etc/ssh/sshd_config on your servers to prevent the clients to time out – so they don’t have to modify their local SSH config: ClientAliveInterval 120 If you don't have administrative access to the server, you can configure your SSH client to send the alive message to the server instead to achieve the same result. This will send a “null packet” every 120 seconds on your SSH connections to keep them alive. If you’re on Mac or Linux, you can edit your local SSH config file in ~/.ssh/config and add the following line: ServerAliveInterval 120 To do that, you setup the SSH server to send the “null packets”, and you’ll prevent a timeout on all the SSH connections every client makes to the server.įortunately, the setups are not exclusive, so you may setup both your client and all your servers and everything will run smoothly. If your clients (customers, users, kids) are fed up with the SSH timeout, you can either instruct them on how to configure their SSH clients – like pointing them to this article – or you can configure the server itself to avoid SSH session timeout. If you are annoyed with your own SSH sessions timing out when you’re connected to servers, this is what you want to do. If you setup your SSH client to send the “null packets”, you’ll prevent an SSH timeout on all the SSH connections you make from your computer. It doesn’t matter if the packet is sent from the client or the server, as long as there is some communication going on between the two. Here’s how to keep your SSH sessions alive and prevent the SSH timeout:īy sending a “null packet” between the client and the server at a specified interval that is smaller than the timeout value, we can avoid SSH timeout. SSH client: Putty on Windows 10 64 bit.SSH timeout due to inactivity is annoying.Raspberry connected to my Wifi network (2.4 GHz) using the onboard wifi.Retropie installed on the microSD (using the retrosmc script).OSMC latest vesion (image OSMC_TGT_rbp2_).Logitech KT400 wireless keyboard (connected via its USB dongle).2 TB HDD directly connected to the onboard USB.microSD Samsung Evo plus 128GB (genuine).Raspberry pi 3 B+ with original 2.5 A power supply.Ah, when I try to reconnect using Putty, I’m getting the image below:Īfter a long time (minutes!!) sometimes I can log in, sometimes I can’t. So I think the problem maybe a ssh server on the Raspberry (or putty) misconfiguration, but I wasn’t able to rule it out. After three consecutive failures, the SSH client will exit. This setting will establish a keep-alive signal sent every 15 seconds through the secure tunnel. The lockups seems to happen at random, but the network connection is active: for example, I can open a cmd shell on my laptop and ping -t the Raspberry with no packet loss and, furthermore, I can browse/read/write files on the /home/osmc directory using Windows SMB without errors. Add the following to your local /.ssh/config (create if it doesnt exist): ServerAliveInterval 15 ServerAliveCount 3. I’m experiencing some ssh lockups / freeze when using Putty to connect to my Raspberry pi 3 B+. This tells you the version of Plink youre using, and gives you a brief summary of how to use Plink: Z:sysosd>plink Plink: command-line connection utility Release 0.70 Usage: plink options userhost command ('host' can also be a PuTTY saved session name) Options: -V print version information and exit -pgpfp print PGP key fingerprints and.
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