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Add firewall rules for iptables on linux #2078

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merged 2 commits into from
Apr 22, 2024
Merged

Add firewall rules for iptables on linux #2078

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1370dff
Add firewall rules for iptables
Meister1593 Apr 18, 2024
f0887c5
Changed rule to accept by zero other rules
Meister1593 Apr 18, 2024
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42 changes: 38 additions & 4 deletions alvr/xtask/firewall/alvr_fw_config.sh
100644 → 100755
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Original file line number Diff line number Diff line change
Expand Up @@ -14,18 +14,18 @@ firewalld_cfg() {
if [ "${1}" == 'add' ]; then
# If running or permanent alvr service is missing, add it
if ! firewall-cmd --zone="${zone}" --list-services | grep 'alvr' >/dev/null 2>&1; then
firewall-cmd --zone="${zone}" --add-service='alvr'
firewall-cmd --zone="${zone}" --add-service='alvr'
fi
if ! firewall-cmd --zone="${zone}" --list-services --permanent | grep 'alvr' >/dev/null 2>&1; then
firewall-cmd --zone="${zone}" --add-service='alvr' --permanent
firewall-cmd --zone="${zone}" --add-service='alvr' --permanent
fi
elif [ "${1}" == 'remove' ]; then
# If running or persistent alvr service exists, remove it
if firewall-cmd --zone="${zone}" --list-services | grep 'alvr' >/dev/null 2>&1; then
firewall-cmd --zone="${zone}" --remove-service='alvr'
firewall-cmd --zone="${zone}" --remove-service='alvr'
fi
if firewall-cmd --zone="${zone}" --list-services --permanent | grep 'alvr' >/dev/null 2>&1; then
firewall-cmd --zone="${zone}" --remove-service='alvr' --permanent
firewall-cmd --zone="${zone}" --remove-service='alvr' --permanent
fi
else
exit 2
Expand Down Expand Up @@ -55,6 +55,38 @@ ufw_cfg() {
fi
}

iptables_cfg() {
first_port_match_count=$(iptables -S | grep -c '9943')
second_port_match_count=$(iptables -S | grep -c '9944')
if [ "${1}" == 'add' ]; then
if [ "$first_port_match_count" == "0" ] || [ "$second_port_match_count" == "0" ]; then
iptables -I OUTPUT -p tcp --sport 9943 -j ACCEPT
iptables -I INPUT -p tcp --dport 9943 -j ACCEPT
iptables -I OUTPUT -p udp --sport 9943 -j ACCEPT
iptables -I INPUT -p udp --dport 9943 -j ACCEPT
iptables -I OUTPUT -p tcp --sport 9944 -j ACCEPT
iptables -I INPUT -p tcp --dport 9944 -j ACCEPT
iptables -I OUTPUT -p udp --sport 9944 -j ACCEPT
iptables -I INPUT -p udp --dport 9944 -j ACCEPT
iptables-save >/etc/iptables/rules.v4
fi
elif [ "${1}" == 'remove' ]; then
if [ "$first_port_match_count" == "4" ] || [ "$second_port_match_count" == "4" ]; then
iptables -D OUTPUT -p tcp --sport 9943 -j ACCEPT
iptables -D INPUT -p tcp --dport 9943 -j ACCEPT
iptables -D OUTPUT -p udp --sport 9943 -j ACCEPT
iptables -D INPUT -p udp --dport 9943 -j ACCEPT
iptables -D OUTPUT -p tcp --sport 9944 -j ACCEPT
iptables -D INPUT -p tcp --dport 9944 -j ACCEPT
iptables -D OUTPUT -p udp --sport 9944 -j ACCEPT
iptables -D INPUT -p udp --dport 9944 -j ACCEPT
iptables-save >/etc/iptables/rules.v4
fi
else
exit 2
fi
}

main() {
# If we're not root use pkexec for GUI prompt
if [ "${USER}" == 'root' ]; then
Expand All @@ -64,6 +96,8 @@ main() {
# Check if ufw exists and is running
elif which ufw >/dev/null 2>&1 && ! ufw status | grep 'Status: inactive' >/dev/null 2>&1; then
ufw_cfg "${1,,}"
elif which iptables >/dev/null 2>&1; then
iptables_cfg "${1,,}"
else
exit 99
fi
Expand Down
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