commit 8bd19bd82604cee98a975e209f10714b7f1be0a2
Author: alexandrev-tibco <alexandre.vazquez@cloud.com>
Date:   Wed May 7 13:22:13 2025 +0200

    Init

diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..abaa98f
Binary files /dev/null and b/.DS_Store differ
diff --git a/apply.sh b/apply.sh
new file mode 100644
index 0000000..ef92608
--- /dev/null
+++ b/apply.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+
+INTERFACES=("vmbr0" "vmbr1" "eno1" "enp1s0")
+
+echo "==> Aplicando arp_filter..."
+for iface in "${INTERFACES[@]}"; do
+  if [ -f "/proc/sys/net/ipv4/conf/$iface/arp_filter" ]; then
+    echo 1 > "/proc/sys/net/ipv4/conf/$iface/arp_filter"
+  fi
+done
+
+echo 1 > /proc/sys/net/ipv4/conf/all/arp_filter
+echo 1 > /proc/sys/net/ipv4/conf/default/arp_filter
+
+SYSCTL_FILE="/etc/sysctl.conf"
+for iface in "${INTERFACES[@]}" all default; do
+  grep -q "net.ipv4.conf.$iface.arp_filter" "$SYSCTL_FILE" ||     echo "net.ipv4.conf.$iface.arp_filter = 1" >> "$SYSCTL_FILE"
+done
+
+sysctl -p
+echo "==> Configuración de arp_filter aplicada correctamente."
diff --git a/check-arp-integrity.sh b/check-arp-integrity.sh
new file mode 100644
index 0000000..31d266c
--- /dev/null
+++ b/check-arp-integrity.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+
+IP_LOCAL="192.168.1.100"
+MAC_ESPERADA="e8:6a:64:8e:7e:2a"
+INTERFAZ_SALIDA="vmbr0"
+LOG_FILE="/var/log/arp-monitor.log"
+REPO_FIX_SCRIPT="$(dirname "$0")/apply.sh"
+
+RESPUESTA=$(arping -c 3 -I "$INTERFAZ_SALIDA" "$IP_LOCAL" 2>/dev/null | grep reply | head -n1)
+MAC_RESPUESTA=$(echo "$RESPUESTA" | awk -F" " '{print $5}' | tr '[:upper:]' '[:lower:]')
+FECHA=$(date '+%Y-%m-%d %H:%M:%S')
+
+if [[ -z "$MAC_RESPUESTA" ]]; then
+  echo "$FECHA - ERROR: No se recibió respuesta ARP de $IP_LOCAL" >> "$LOG_FILE"
+elif [[ "$MAC_RESPUESTA" != "$MAC_ESPERADA" ]]; then
+  echo "$FECHA - ALERTA: MAC inesperada para $IP_LOCAL. Esperada: $MAC_ESPERADA, Recibida: $MAC_RESPUESTA" >> "$LOG_FILE"
+  echo "$FECHA - Reaplicando configuración arp_filter" >> "$LOG_FILE"
+  bash "$REPO_FIX_SCRIPT" >> "$LOG_FILE" 2>&1
+else
+  echo "$FECHA - OK: ARP verificado correctamente para $IP_LOCAL (MAC $MAC_RESPUESTA)" >> "$LOG_FILE"
+fi
diff --git a/setup.sh b/setup.sh
new file mode 100644
index 0000000..4f0ac4c
--- /dev/null
+++ b/setup.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+
+REPO_URL="http://gitea:3000/baphemot/proxmox-node-config.git"
+CLONE_DIR="/opt/proxmox-node-config"
+MARKER_FILE="$CLONE_DIR/.apply-done"
+
+if [ ! -d "$CLONE_DIR/.git" ]; then
+  echo "==> Clonando repo desde $REPO_URL..."
+  git clone "$REPO_URL" "$CLONE_DIR"
+else
+  echo "==> Actualizando repo..."
+  git -C "$CLONE_DIR" pull
+fi
+
+cd "$CLONE_DIR" || exit 1
+
+if [ ! -f "$MARKER_FILE" ]; then
+  echo "==> Ejecutando apply.sh por primera vez..."
+  bash "$CLONE_DIR/apply.sh"
+  touch "$MARKER_FILE"
+else
+  echo "==> apply.sh ya fue ejecutado previamente, se omite."
+fi
+
+install_unit() {
+  local service_name=$1
+  local timer_name=$2
+
+  if ! systemctl list-timers | grep -q "$timer_name"; then
+    echo "==> Instalando $timer_name..."
+    cp "$CLONE_DIR/systemd/$service_name" /etc/systemd/system/
+    cp "$CLONE_DIR/systemd/$timer_name" /etc/systemd/system/
+    systemctl daemon-reexec
+    systemctl daemon-reload
+    systemctl enable --now "$timer_name"
+  else
+    echo "==> $timer_name ya está instalado."
+  fi
+}
+
+install_unit apply.service apply.timer
+install_unit arp-monitor.service arp-monitor.timer
+
+echo "==> Instalación y configuración completa."
diff --git a/systemd/apply.service b/systemd/apply.service
new file mode 100644
index 0000000..4c1ee0f
--- /dev/null
+++ b/systemd/apply.service
@@ -0,0 +1,6 @@
+[Unit]
+Description=Apply ARP Filter Fix to Network Interfaces
+
+[Service]
+Type=oneshot
+ExecStart=/opt/proxmox-node-config/apply.sh
diff --git a/systemd/apply.timer b/systemd/apply.timer
new file mode 100644
index 0000000..ae3a522
--- /dev/null
+++ b/systemd/apply.timer
@@ -0,0 +1,10 @@
+[Unit]
+Description=Run apply.sh every 15 minutes
+
+[Timer]
+OnBootSec=5min
+OnUnitActiveSec=15min
+Persistent=true
+
+[Install]
+WantedBy=timers.target
diff --git a/systemd/arp-monitor.service b/systemd/arp-monitor.service
new file mode 100644
index 0000000..0d8ed47
--- /dev/null
+++ b/systemd/arp-monitor.service
@@ -0,0 +1,6 @@
+[Unit]
+Description=Check ARP Table Integrity
+
+[Service]
+Type=oneshot
+ExecStart=/opt/proxmox-node-config/check-arp-integrity.sh
diff --git a/systemd/arp-monitor.timer b/systemd/arp-monitor.timer
new file mode 100644
index 0000000..8768d40
--- /dev/null
+++ b/systemd/arp-monitor.timer
@@ -0,0 +1,10 @@
+[Unit]
+Description=Run ARP monitor every 10 minutes
+
+[Timer]
+OnBootSec=3min
+OnUnitActiveSec=10min
+Persistent=true
+
+[Install]
+WantedBy=timers.target