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Questions tagged [multiplexing]

19 questions
14
votes
1 answer

Adding port forwardings programmatically on a ControlMaster SSH session

I just found out about the ControlMaster/ControlPath feature of OpenSSH, which allows you to use a single SSH connection to run multiple terminals. As I often use SSH to use port forwarding to get encrypted and authenticated VNC sessions I instantly…
aef
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3 answers

Is there any way to use session multiplexing (Control Master) from windows?

On our Repository server adding a ControlMaster to the ssd/config file (creates socket?) resulted in a 50x transfer speed increase from roughly 2.5 seconds averaged to 0.05 seconds average. The transfer speed is between the repository system and…
Joshua Enfield
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7
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3 answers

NetBackup Multiplexing for Oracle RMAN Backups

My question is... what multiplexing factor in NetBackup is recommended / do you use for Oracle RMAN backups over 1Gb/s management network to LTO3? JB Background: With enterprise backup tools like NetBackup, there is the concept of Multiplexing which…
Jonathan Bourke
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6
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1 answer

socat forwarding to multiple addresses

I have a single incoming video stream, and I'd like to set up multiple processes to handle it, each running at its own address. After some reading it seems socat is one way to do this socat TCP4-LISTEN:1934,fork,reuseaddr TCP4:someaddress:1935…
Shukri Adams
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6
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1 answer

Removing port forwardings programmatically on a ControlMaster SSH session

Quite a while ago I got an answer telling me how to add a port-forwarding on a running SSH ControlMaster process. To know that helps a lot, but I'm still missing a way to remove such a port forwarding after I don't need that anymore. As far as I…
aef
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4
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4 answers

Recommendations on good terminal multiplexer

Please recommend me a good terminal multiplexer. I'm new to sys admin work and need a good way to mange multiple boxes. Edit: Just be clear, I'm looking for something like PuTTy that can send commands to multiple boxes at once. Usage example: …
user39256
3
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1 answer

sshd_config limit / disable multiplexing

Background: ssh (client) allows the re-use of active connections via multiplexing ControlPaths ... Host * ControlMaster auto ControlPath /home/username/.ssh/%r@%h:%p the TL;DR is the first connection will authenticate like any other, subsequent…
Oneiroi
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Can I make ssh tell me which control file it would use for multiplexing?

I am using the following options in my ~/.ssh/config in order to enable connection multiplexing: ControlMaster auto ControlPath ~/.ssh/control/master-%r@%h:%p However, this has the annoying problem that the first shell to connect to a particular…
Ryan C. Thompson
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2
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2 answers

OpenSSH multiplexed connection unexpectedly closed

I have following configuration in .ssh config: Host * GSSAPIAuthentication no Compression yes ForwardAgent yes ForwardX11 no Protocol 2 StrictHostKeyChecking no …
user13185
2
votes
2 answers

ATM, why asynchronous?

i'm studing for a multimedia networks exams and i don't understand why ATM is asynchronous. i know that it is asyncrhonous if used with SONET but this makes no sense..
nkint
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1
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1 answer

Enabling SSH multiplexing for a series of commands, then closing it

I'm trying to create multiplexed ssh connections for a series of commands that run in succession, then after the series of commands is finished, close the multiplex session. According to the documentation, the first connection should start the…
Justin
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Funnelling http traffic

I have a situation where a large batch of servers (X), on demand, need to request data from a smaller set of web servers (Y). The worst case scenario is if all servers in X decide to fetch different requests to one server in Y. That would be X…
spencer p
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pssh with ssh ProxyJump with multiplexing session re-use

I have a list of nodes, that are accessible only through a bastion server. On these nodes, I would like to execute commands in parallel. So, I had been trying to use ssh -J flag or, respectively, the ssh_config ProxyJump option in combination with…
THX
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0
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1 answer

Chromecast mDNS burst slowing down PCs

Starting a few weeks ago, at seemingly random intervals, 3 of 5 PCs will lag at the same time for a few seconds to the extent where mouse and keyboard input is delayed and VoIP calls are dropped. After ruling out a few potential root causes, I…
mythofechelon
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4 answers

How is frequency multiplexing implemented?

How is frequency multiplexing implemented? I understand that in time division multiplexing the feed of each channel just uses its own time interval for sending out data over the same medium. But how can you mix different frequencies into a single…
Absolute0
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