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@LucaBazzea
Last active January 13, 2026 17:12
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Debian server configuration and hardening script
# Packages remove
apt purge \
ed nano \
x11-common xauth libx11-* gdm3 lightdm \
apache2 \
exim4 postfix sendmail \
perl python2 python3-minimal ruby \
snapd \
cloud-init \
avahi-daemon \
cups \
ModemManager
# Update
apt update
apt upgrade -y
# Clean up
apt autoremove --purge
apt clean
apt autoclean
# Packages install
apt install -y \
ca-certificates \
ufw \
curl \
python3 \
fastfetch \
wget
# Firewall
ufw limit ssh
ufw allow http
ufw allow https
ufw enable
ufw status verbose
# Docker
apt purge docker.io docker-compose docker-doc podman-docker containerd runc
install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc
chmod a+r /etc/apt/keyrings/docker.asc
tee /etc/apt/sources.list.d/docker.sources <<EOF
Types: deb
URIs: https://download.docker.com/linux/debian
Suites: $(. /etc/os-release && echo "$VERSION_CODENAME")
Components: stable
Signed-By: /etc/apt/keyrings/docker.asc
EOF
apt update
apt install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
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