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Check existing iptables rules.v4

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billz
2020-03-25 22:59:51 +00:00
parent f92ec4ebda
commit 37adaf2cd0
1 changed files with 21 additions and 5 deletions
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26
installers/common.sh
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@@ -20,6 +20,7 @@ readonly raspap_user="www-data"
readonly raspap_sudoers="/etc/sudoers.d/090_raspap"
readonly raspap_dnsmasq="/etc/dnsmasq.d/090_raspap.conf"
readonly raspap_sysctl="/etc/sysctl.d/90_raspap.conf"
readonly rulesv4="/etc/iptables/rules.v4"
webroot_dir="/var/www/html"
git_source_url="https://github.com/$repo" # $repo from install.raspap.com
@@ -310,11 +311,26 @@ function _configure_networking() {
sudo sysctl -p $raspap_sysctl || _install_error "Unable to execute sysctl"
sudo /etc/init.d/procps restart || _install_error "Unable to execute procps"
echo "Creating IP tables rules"
sudo iptables -t nat -A POSTROUTING -j MASQUERADE || _install_error "Unable to execute iptables"
sudo iptables -t nat -A POSTROUTING -s 192.168.50.0/24 ! -d 192.168.50.0/24 -j MASQUERADE || _install_error "Unable to execute iptables"
echo "Persisting IP tables rules to /etc/iptables/rules.v4"
sudo iptables-save | sudo tee /etc/iptables/rules.v4 > /dev/null || _install_error "Unable to execute iptables-save"
echo "Checking iptables rules"
rules=(
"-A POSTROUTING -j MASQUERADE"
"-A POSTROUTING -s 192.168.50.0/24 ! -d 192.168.50.0/24 -j MASQUERADE"
)
for rule in "${rules[@]}"; do
if grep -- "$rule" $rulesv4 > /dev/null; then
echo "Rule already exits: ${rule}"
else
rule=$(sed -e 's/^\(-A POSTROUTING\)/-t nat \1/' <<< $rule)
echo "Adding rule: ${rule}"
sudo iptables $rule || _install_error "Unable to execute iptables"
added=true
fi
done
# Persist rules if added
if [ "$added" = true ]; then
echo "Persisting IP tables rules"
sudo iptables-save | sudo tee $rulesv4 > /dev/null || _install_error "Unable to execute iptables-save"
fi
# Prompt to install RaspAP daemon
echo -n "Enable RaspAP control service (Recommended)? [Y/n]: "