Linux: SSH

Config file

sudo nano /etc/ssh/sshd_config

Welcome message

Two files must be edited:
/etc/motd (message of the day)
/etc/ssh/sshd_config: Change the setting PrintLastLog to "no", this will disable the "Last login" message.

Convert rsa to ppk

puttygen keyname -o keyname.ppk

Avoid broken pipe

2 options:
1:
create file: /home/user/.ssh/ssh_config with the following content:

HashKnownHosts yes
GSSAPIAuthentication yes
GSSAPIDelegateCredentials no
ServerAliveInterval 120

2:

echo 60 > /proc/sys/net/ipv4/tcp_keepalive_time