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Use destination port from port forward rule in iptables commands

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Eduardo Silva 2025-03-13 10:14:50 -03:00
parent c574607173
commit c8aedc5437
1 changed files with 14 additions and 5 deletions
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19
firewall/tools.py
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@ -1,7 +1,8 @@
from firewall.models import FirewallRule, FirewallSettings, RedirectRule
from wireguard.models import Peer, PeerAllowedIP, WireGuardInstance
from django.utils import timezone
from firewall.models import FirewallRule, FirewallSettings, RedirectRule
from wireguard.models import PeerAllowedIP, WireGuardInstance
def get_peer_addresses(peers, include_networks):
addresses = []
@ -218,19 +219,27 @@ def generate_port_forward_firewall():
for redirect_rule in RedirectRule.objects.all().order_by('port'):
description = f" - {redirect_rule.description} " if redirect_rule.description else ""
rule_destination = redirect_rule.ip_address
try:
if redirect_rule.port_forward:
destination_port = int(redirect_rule.port_forward)
else:
destination_port = redirect_rule.port
except:
destination_port = redirect_rule.port
if redirect_rule.peer:
peer_allowed_ip_address = PeerAllowedIP.objects.filter(peer=redirect_rule.peer, config_file='server', netmask=32, priority=0).first()
if peer_allowed_ip_address:
rule_destination = peer_allowed_ip_address.allowed_ip
if rule_destination:
rule_text = f"# {redirect_rule.port}/{redirect_rule.protocol} - {redirect_rule.uuid} - Port Forward Rule set{description}\n"
rule_text += f"iptables -t nat -A WGWADM_PREROUTING -p {redirect_rule.protocol} -d wireguard-webadmin -i {wan_interface} --dport {redirect_rule.port} -j DNAT --to-dest {rule_destination}:{redirect_rule.port}\n"
rule_text += f"iptables -t nat -A WGWADM_PREROUTING -p {redirect_rule.protocol} -d wireguard-webadmin -i {wan_interface} --dport {redirect_rule.port} -j DNAT --to-dest {rule_destination}:{destination_port}\n"
if redirect_rule.masquerade_source:
rule_text += f"iptables -t nat -A WGWADM_POSTROUTING -p {redirect_rule.protocol} -d {rule_destination} -o wg+ --dport {redirect_rule.port} -j MASQUERADE\n"
rule_text += f"iptables -t nat -A WGWADM_POSTROUTING -p {redirect_rule.protocol} -d {rule_destination} -o wg+ --dport {destination_port} -j MASQUERADE\n"
if redirect_rule.add_forward_rule:
rule_text += f"iptables -t filter -A WGWADM_FORWARD -p {redirect_rule.protocol} -d {rule_destination} -i {wan_interface} -o wg+ --dport {redirect_rule.port} -j ACCEPT\n"
rule_text += f"iptables -t filter -A WGWADM_FORWARD -p {redirect_rule.protocol} -d {rule_destination} -i {wan_interface} -o wg+ --dport {destination_port} -j ACCEPT\n"
redirect_firewall += rule_text