SSH Connections

Installing OPEN SSH

Install openssh

• sudo pacman -S openssh
• systemctl enable sshd

To start the sshd

• systemctl start sshd

• Better configure before starting

Configuring

Open the configurations file

• sudo vim /etc/ssh/sshd_config
• Remove the # on necessary configurations lines.
• Simple Setup:

Port
AddressFamily
ListenAddress

Security using rsa keys

Increasing the security is very important so... Create the keypair for the CLIENT

• ssh-keygen -t rsa -b 2048

This will create 2 keys the private and the public (.pub) in your profile .ssh/id_rsa In the SERVER create the .ssh folder in the profile that you want to login and create this new file

• vim .ssh/authorized_keys

And paste everthing in .pub key to this file

ssh-rsa AAAAB3NzaC1...

Edit some configurations to disable other types of login

• sudo vim /etc/ssh/sshd_config

Uncomment and Change

HostKey /etc/ssh/ssh_host_rsa_key
PermitRootLogin no
MaxAuthTries 2
HostbasedAuthentication no
IgnoreUserKnownHosts yes
IgnoreRhosts yes
PasswordAuthentication no
PermitEmptyPasswords no

Remote Desktop (Xorg)

• sudo pacman -S xorg
• touch ~/.Xauthority
• chmod 600 ~/.Xauthority
• sudo vim /etc/ssh/sshd_config ``Uncoment and Change`

AllowTcpForwarding yes
X11Forwarding yes
X11DisplayOffset 10
X11UseLocalhost yes