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Update wireguard-install.sh #565

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66 changes: 63 additions & 3 deletions wireguard-install.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -540,6 +540,62 @@ function uninstallWg() {
fi
}

function fixIptablesRules() {
echo ""
echo "Fixing iptables rules for WireGuard..."
echo ""

# Check if WireGuard is running
if [[ ${OS} == 'alpine' ]]; then
rc-service --quiet "wg-quick.${SERVER_WG_NIC}" status
else
systemctl is-active --quiet "wg-quick@${SERVER_WG_NIC}"
fi
WG_RUNNING=$?

if [[ ${WG_RUNNING} -ne 0 ]]; then
echo -e "${RED}WireGuard is not running. Please start WireGuard first.${NC}"
echo -e "${ORANGE}You can start it with: systemctl start wg-quick@${SERVER_WG_NIC}${NC}"
return 1
fi

# Clear existing iptables rules for WireGuard
echo "Clearing existing iptables rules..."
iptables -D INPUT -p udp --dport ${SERVER_PORT} -j ACCEPT 2>/dev/null
iptables -D FORWARD -i ${SERVER_PUB_NIC} -o ${SERVER_WG_NIC} -j ACCEPT 2>/dev/null
iptables -D FORWARD -i ${SERVER_WG_NIC} -j ACCEPT 2>/dev/null
iptables -t nat -D POSTROUTING -o ${SERVER_PUB_NIC} -j MASQUERADE 2>/dev/null
ip6tables -D FORWARD -i ${SERVER_WG_NIC} -j ACCEPT 2>/dev/null
ip6tables -t nat -D POSTROUTING -o ${SERVER_PUB_NIC} -j MASQUERADE 2>/dev/null

# Add new iptables rules
echo "Adding new iptables rules..."
iptables -I INPUT -p udp --dport ${SERVER_PORT} -j ACCEPT
iptables -I FORWARD -i ${SERVER_PUB_NIC} -o ${SERVER_WG_NIC} -j ACCEPT
iptables -I FORWARD -i ${SERVER_WG_NIC} -j ACCEPT
iptables -t nat -A POSTROUTING -o ${SERVER_PUB_NIC} -j MASQUERADE
ip6tables -I FORWARD -i ${SERVER_WG_NIC} -j ACCEPT
ip6tables -t nat -A POSTROUTING -o ${SERVER_PUB_NIC} -j MASQUERADE

# Save iptables rules if iptables-persistent is available
if command -v iptables-save &>/dev/null; then
if [[ -d /etc/iptables ]]; then
iptables-save > /etc/iptables/rules.v4
ip6tables-save > /etc/iptables/rules.v6
echo -e "${GREEN}Iptables rules saved to /etc/iptables/rules.v4 and /etc/iptables/rules.v6${NC}"
elif command -v netfilter-persistent &>/dev/null; then
netfilter-persistent save
echo -e "${GREEN}Iptables rules saved using netfilter-persistent${NC}"
else
echo -e "${ORANGE}Note: iptables rules are not persistent. They will be lost on reboot.${NC}"
echo -e "${ORANGE}Consider installing iptables-persistent: apt-get install iptables-persistent${NC}"
fi
fi

echo -e "${GREEN}Iptables rules have been fixed successfully!${NC}"
echo -e "${GREEN}WireGuard should now work properly with the correct routing rules.${NC}"
}

function manageMenu() {
echo "Welcome to WireGuard-install!"
echo "The git repository is available at: https://github.com/angristan/wireguard-install"
Expand All @@ -551,9 +607,10 @@ function manageMenu() {
echo " 2) List all users"
echo " 3) Revoke existing user"
echo " 4) Uninstall WireGuard"
echo " 5) Exit"
until [[ ${MENU_OPTION} =~ ^[1-5]$ ]]; do
read -rp "Select an option [1-5]: " MENU_OPTION
echo " 5) Fix iptables rules"
echo " 6) Exit"
until [[ ${MENU_OPTION} =~ ^[1-6]$ ]]; do
read -rp "Select an option [1-6]: " MENU_OPTION
done
case "${MENU_OPTION}" in
1)
Expand All @@ -569,6 +626,9 @@ function manageMenu() {
uninstallWg
;;
5)
fixIptablesRules
;;
6)
exit 0
;;
esac
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