SSH

Remote Port Forwarding

• https://help.ubuntu.com/community/SSH/OpenSSH/PortForwarding#Remote_Port_Forwarding
• Add GatewayPorts=yes to /etc/ssh/sshd_config for bind to 0.0.0.0
• ssh -R 3000:localhost:3000 root@test.cz

Cluster SSH

• http://sourceforge.net/projects/clusterssh

Mosh

• http://mosh.mit.edu
• http://www.root.cz/clanky/mosh-trochu-jine-ssh

sudo apt-get install python-software-properties
sudo add-apt-repository ppa:keithw/mosh
sudo apt-get update
sudo apt-get install mosh

Parallel SSH

• https://github.com/jcmcken/parallel-ssh
• https://github.com/ndenev/mpssh
• http://archive09.linux.com/feature/151340
• http://www.root.cz/clanky/parallel-ssh-jeden-prikaz-vladne-vsem

Run a local script on several servers

pssh -h serverlist -i -I < info.sh

Check acpid

parallel-ssh -A -i -h devices-linux -l root -O StrictHostKeyChecking=no 'ps aux | grep acpid'

Check time

parallel-ssh -A -i -h devices-linux -l root -O StrictHostKeyChecking=no 'zdump /etc/localtime'

Proxy tunnel

ssh -D 8080 user@server -p 443

Security

Ed25519 vs RSA vs DSA

• http://chneukirchen.org/blog/archive/2014/02/the-road-to-openssh-bliss-ed25519-and-the-identitypersist-patch.html
• http://security.stackexchange.com/a/46781

sshpass

• http://www.cyberciti.biz/faq/noninteractive-shell-script-ssh-password-provider

Other

• https://github.com/portly/pssh