Run a node on a VPS

• Check the provider allows sustained bandwidth (initial sync + serving peers)
• SSD/NVMe, not network HDD; disk is the usual bottleneck
• 2+ vCPU, 4–8 GB RAM
• Full node: plan ~300 GB+ and growth; pruned: roughly a third

sudo adduser admin && sudo usermod -aG sudo admin
# copy your SSH key, then in /etc/ssh/sshd_config:
#   PasswordAuthentication no
#   PermitRootLogin no
sudo systemctl restart ssh
sudo ufw default deny incoming && sudo ufw allow OpenSSH && sudo ufw allow 18080/tcp && sudo ufw enable
sudo apt install unattended-upgrades

Follow the Ubuntu guide (download, verify, systemd). On small disks add prune-blockchain=1 before the first start: pruning an existing database later needs extra space.

Your VPS provider can see the server's traffic and disk. Using it as your wallet's node is still better than a random public node (you control the software), but your wallet connection to it should go over SSH tunnel, TLS or Tor.

# From your computer: forward the VPS's local RPC through SSH
ssh -N -L 18081:127.0.0.1:18081 admin@your-vps
# then point your wallet to 127.0.0.1:18081