SSH
Client config
ssh_config(5) Mac OS X Manual Page
Tasks
Debugging
sshd -ddd
ssh user@host -vvv
Use RSA key authentication
ssh-keygen -t rsa
ssh-copy-id user@host
Disable password login
vim /etc/ssh/sshd_config
systemctl reload sshd
Show fignerprint
ssh-keygen -E md5 -lf ~/.ssh/id_rsa.pub
Agent forwarding
ssh-add host-b.pem
ssh -A host-a
ssh host-b
Generate public key from private key
ssh-keygen -y -f ~/.ssh/id_rsa > ~/.ssh/id_rsa.pub
Key management
Tools
- emre/storm: Manage your SSH like a boss.
- Shuttle | A simple SSH shortcut menu for OS X
- Gate One ✈ Web Terminal Emulator and SSH Client | Liftoff Software
Issues
Disable DNS in case of slow login
vim /etc/ssh/sshd_config
UseDNS no
Ubuntu encrypted home directory
Put authorized_keys out of home SSH/OpenSSH/Keys - Community Help Wiki