To prevent irrelevant keys from being offered, you have to explicitly specify this in every host entry in the ~/.ssh/config (on the client machine) file by adding IdentitiesOnly like so:
Host www.somehost.com
IdentityFile ~/.ssh/key_for_somehost_rsa
SSH on multiple machines/servers using clusterssh simultaneously October 3rd, 2009 by WEBNESBAY This article provides you useful information to control multiple machines using single terminal using cluster ssh What is CLUSTER SSH? With ClusterSSH it is possible to make a SSH connection to multiple servers or machines to perform tasks from one single command window, without any scripting. The ‘cssh’ command lets you connect to any server specified as a command line argument, or to groups of servers (or cluster nodes) defined in a configuration file.
Cluster SSH opens terminal windows with connections to specified hosts and an administration console. Any text typed into the administration console is replicated to all other connected and active windows. This tool is intended for, but not limited to, cl
Einen Tunnel (mit SSH) zu bauen, bedeutet, daß man eine Terminalverbindung auf einen anderen Rechner herstellt und über diese Verbindung (die verschlüselt ist) wir zusätzlich ein weiterer Port geleitet.
Remote terminal application that allows roaming, supports intermittent connectivity, and provides intelligent local echo and line editing of user keystrokes.
Mosh is a replacement for SSH. It's more robust and responsive, especially over Wi-Fi, cellular, and long-distance links.
Mosh is free software, available for GNU/Linux, FreeBSD, and Mac OS X.
Features
* On Demand
o Can load keys when ssh is launched.
o Can load keys when the Apple Keychain is unlocked.
* Security
o Can unload keys on sleep (or after a period of sleep).
o Can unload keys when the screenssaver kicks in.
o Can unload keys when the Apple Keychain is locked.
o Can lock the Apple Keychain when the screensaver kicks in.
o Can ask for confirmation when keys are accessed (useful for agent forwarding).
* Display
o Icon can be displayed in the statusbar, dock, or both.
* Integration
o Apple Keychain
+ Can store SSH key passphrases in the Apple Keychain.
+ Can lock/unlock the Apple Keychain from a menu item.
o Global Environment
+ Can add the necessary variables to the global environment, so you can use SSHKeychain with Project Builder, etc.
o SSH Tools
+ Works seamless with the commandline tools (adding keys from the commandline also updates the UI).
+ Can generate new keypairs from the UI.
* Networking
o Tunneling
+ Local ports can be forwarded over a ssh connection from the tunnel menu.
+ Tunnels can be launched when your keys are loaded.
+ The tunnel menu indicates the status of your tunnels.
+ Tunnels are automatically closed when the system goes to sleep.
+ Multiple ports can be forwarded over one ssh connection.
o Can handle agent requests through Agent Forwarding.
ate-limit all incoming SSH connections to 8 in a one minute window. Normal users will have no trouble logging in, but the brute force attacks will be dropped, limiting the number of possible account combinations from unlimited, to 8.
To access BNL QCDOC computing resources (including copying files to/from QCDOC servers) you must use the QCDOC ssh gateways. One way (2-hop) to transfer files is to first copy them into the gateways and then transfer them to the appropriate QCDOC file sys
E. Clouet. Acta Materialia, 54 (13):
3543 - 3552(2006)Selected Papers from the Meeting "Micromechanics and Microstructure Evolution: Modeling, Simulation and Experiments" held in Madrid/Spain, 11-16 September 2005.