FaridAghili/ssh-tunnel.md

## ssh-tunnel.md

      
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              ssh-tunnel.md
            
          
    Updates

apt update
apt upgrade -y
apt autoremove -y
apt autoclean -y

Enable BBR

nano /etc/sysctl.conf

Add following lines to the end of file, save and exit:

net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr

Run following command:

sysctl -p

Firewall

ufw allow 22/tcp
ufw allow 443/tcp
ufw enable

Change SSH port

nano /etc/ssh/sshd_config

Find and change #Port 22 to Port 443, save and exit.
Restart SSH service

systemctl restart sshd
exit

SSH to server

ssh -p 443 {ip_address}

Then
ufw delete allow 22/tcp

Add user

adduser username --shell=/bin/false

Delete user

deluser user