Update application to use environment variables and force IPv4

Modify syslog_parser.py to load environment variables from .env file and force IPv4 connection to the database. Update replit.md to reflect recent fixes and workflow changes. Increment version in version.json.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 7a657272-55ba-4a79-9a2e-f1ed9bc7a528
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.env.example

@@ -1,5 +1,6 @@
 # Database PostgreSQL
-PGHOST=localhost
+# IMPORTANTE: Usa 127.0.0.1 invece di localhost per forzare IPv4 (evita problemi con ::1)
+PGHOST=127.0.0.1
 PGPORT=5432
 PGDATABASE=ids_database
 PGUSER=ids_user

.replit

@@ -14,6 +14,10 @@ run = ["npm", "run", "start"]
 localPort = 5000
 externalPort = 80
 
+[[ports]]
+localPort = 42789
+externalPort = 3000
+
 [env]
 PORT = "5000"
 

python_ml/syslog_parser.py

@@ -183,9 +183,13 @@ class SyslogParser:
 
 def main():
     """Main entry point"""
+    # Carica variabili d'ambiente da .env
+    load_dotenv("/opt/ids/.env")
+    
     # Configurazione database da environment
+    # IMPORTANTE: Usa 127.0.0.1 invece di localhost per forzare IPv4
     db_config = {
-        'host': os.getenv('PGHOST', 'localhost'),
+        'host': os.getenv('PGHOST', '127.0.0.1'),
         'port': os.getenv('PGPORT', '5432'),
         'database': os.getenv('PGDATABASE', 'ids_database'),
         'user': os.getenv('PGUSER', 'ids_user'),

replit.md

@@ -36,11 +36,29 @@ Sistema di rilevamento intrusioni per router MikroTik basato su Machine Learning
 
 ## Workflow
 
-1. **Log Collection**: Router → Syslog → PostgreSQL `network_logs`
+1. **Log Collection**: Router → Syslog (UDP:514) → RSyslog → syslog_parser.py → PostgreSQL `network_logs`
 2. **Training**: Python ML estrae 25 feature → Isolation Forest
 3. **Detection**: Analisi real-time → Scoring 0-100 → Classificazione
 4. **Auto-Block**: IP critico (>=80) → API REST → Tutti i router (parallelo)
 
+## Fix Recenti (Novembre 2025)
+
+### PostgreSQL Authentication Fix
+- **Problema**: Password authentication failed (SCRAM-SHA-256 vs MD5)
+- **Soluzione**: `deployment/fix_postgresql_auth.sh` configura SCRAM-SHA-256 in pg_hba.conf
+- **Password encryption**: ALTER SYSTEM SET password_encryption = 'scram-sha-256'
+- **Utente ricreato**: DROP + CREATE con formato SCRAM corretto
+
+### IPv4 Force Fix
+- **Problema**: syslog_parser si connetteva a ::1 (IPv6) invece di 127.0.0.1 (IPv4)
+- **Soluzione**: PGHOST=127.0.0.1 in .env (NON usare localhost)
+- **Parser**: load_dotenv() carica .env automaticamente
+
+### Git Ownership Fix
+- **Problema**: dubious ownership error in /opt/ids
+- **Soluzione**: `deployment/fix_git_ownership.sh` aggiunge safe.directory
+- **Update script**: `deployment/update_from_git.sh` ora esegue git come utente ids
+
 ## File Importanti
 
 ### Python ML Backend

version.json

@@ -1,7 +1,13 @@
 {
-  "version": "1.0.4",
-  "lastUpdate": "2025-11-17T16:05:06.972Z",
+  "version": "1.0.5",
+  "lastUpdate": "2025-11-17T16:47:34.637Z",
   "changelog": [
+    {
+      "version": "1.0.5",
+      "date": "2025-11-17",
+      "type": "patch",
+      "description": "Deployment automatico v1.0.5"
+    },
     {
       "version": "1.0.4",
       "date": "2025-11-17",