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Firewall

ufw

ubuntu 20.04

ufw default allow outgoing
ufw default deny incoming
ufw allow ssh
ufw allow http
ufw enable

Para desabilitar

ufw disable

desabilitar ipv6 em /etc/default/ufw

uteis

ufw allow from ip/masc to any <porta> comment “comentário”

ufw status numbered

ufw delete NRO

Config da rede manual

https://linuxhint.com/setup_static_ip_address_ubuntu/

desativar subiquity

cat /etc/cloud/cloud.cfg.d/subiquity-disable-cloudinit-networking.cfg

network: {config: disabled}

editar /etc/netplan/00-installer-config.yaml

network:
  ethernets:
    ens160:
      addresses: [10.233.25.26/16]
      nameservers:
        addresses: [10.233.0.4, 143.107.182.2]

rodar com netplan try