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Improved firewall installation logic

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New logic makes way more sense:
- If either firewalld or iptables are present, use whatever we have
- If not, install firewalld in CentOS/Fedora and iptables in Debian/Ubuntu
This commit is contained in:
Nyr 2020-05-01 17:52:40 +02:00
parent eaa24c9b99
commit 6b94ff0912
1 changed files with 21 additions and 14 deletions
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35
wireguard-install.sh
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@ -225,12 +225,18 @@ if [[ ! -e /etc/wireguard/wg0.conf ]]; then
new_client_dns
echo
echo "We are ready to set up your WireGuard server now."
# DigitalOcean ships their CentOS and Fedora images without firewalld
# We don't want to silently enable a firewall, so we give a subtle warning
# If the user continues, firewalld will be installed and enabled during setup
if [[ "$os" == "centos" || "$os" == "fedora" ]] && ! systemctl is-active --quiet firewalld.service; then
echo
echo "firewalld, which is required to manage routing tables, will also be installed."
# Install a firewall in the rare case where one is not already available
if ! systemctl is-active --quiet firewalld.service && ! hash iptables 2>/dev/null; then
if [[ "$os" == "centos" || "$os" == "fedora" ]]; then
firewall="firewalld"
# We don't want to silently enable firewalld, so we give a subtle warning
# If the user continues, firewalld will be installed and enabled during setup
echo
echo "firewalld, which is required to manage routing tables, will also be installed."
elif [[ "$os" == "debian" || "$os" == "ubuntu" ]]; then
# iptables is way less invasive than firewalld so no warning is given
firewall="iptables"
fi
fi
echo
read -n1 -r -p "Press any key to continue..."
@ -238,7 +244,7 @@ if [[ ! -e /etc/wireguard/wg0.conf ]]; then
if [[ "$os" == "ubuntu" && "$os_version" -ge 2004 ]]; then
# Ubuntu 20.04 or higer
apt-get update
apt-get install -y wireguard qrencode
apt-get install -y wireguard qrencode $firewall
elif [[ "$os" == "ubuntu" && "$os_version" -eq 1804 ]]; then
# Ubuntu 18.04
# Repo is added manually so we don't depend on add-apt-repository.
@ -286,7 +292,7 @@ EOF
# the system has an outdated kernel, there is no guarantee that old headers were
# still downloadable and to provide suitable headers for future kernel updates.
apt-get install -y linux-headers-generic
apt-get install -y wireguard iptables qrencode
apt-get install -y wireguard qrencode $firewall
elif [[ "$os" == "debian" && "$os_version" -eq 10 ]]; then
# Debian 10
if ! grep -qs '^deb .* buster-backports main' /etc/apt/sources.list /etc/apt/sources.list.d/*.list; then
@ -304,24 +310,25 @@ EOF
# headers were still downloadable and to provide suitable headers for future
# kernel updates.
apt-get install -y linux-headers-"$architecture"
apt-get install -y wireguard iptables qrencode
apt-get install -y wireguard qrencode $firewall
elif [[ "$os" == "centos" && "$os_version" -eq 8 ]]; then
# CentOS 8
dnf install -y epel-release elrepo-release
dnf install -y kmod-wireguard wireguard-tools firewalld qrencode
dnf install -y kmod-wireguard wireguard-tools qrencode $firewall
mkdir -p /etc/wireguard/
systemctl enable --now firewalld.service
elif [[ "$os" == "centos" && "$os_version" -eq 7 ]]; then
# CentOS 7
yum install -y epel-release https://www.elrepo.org/elrepo-release-7.el7.elrepo.noarch.rpm
yum install -y yum-plugin-elrepo
yum install -y kmod-wireguard wireguard-tools firewalld qrencode
yum install -y kmod-wireguard wireguard-tools qrencode $firewall
mkdir -p /etc/wireguard/
systemctl enable --now firewalld.service
elif [[ "$os" == "fedora" ]]; then
# Fedora
dnf install -y wireguard-tools firewalld qrencode
dnf install -y wireguard-tools qrencode $firewall
mkdir -p /etc/wireguard/
fi
# If firewalld was just installed, enable it
if [[ "$firewall" == "firewalld" ]]; then
systemctl enable --now firewalld.service
fi
# Generate wg0.conf