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ids.alfacom.it/deployment/rsyslog
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marco370 495e845a79 Update log format to include timestamps and filter incoming connections 
Correct the rsyslog template to include timestamps in logs, ensuring compatibility with the Python parser. This change also refactors the log filtering to capture only incoming connections, significantly reducing log volume.

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2025-11-22 08:54:21 +00:00
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99-mikrotik.conf Update log format to include timestamps and filter incoming connections 2025-11-22 08:54:21 +00:00
README.md Set up system to receive and store MikroTik logs 2025-11-21 17:26:52 +00:00

README.md

RSyslog Configuration - IDS MikroTik

Overview

Configurazione RSyslog per ricevere log dai router MikroTik via UDP:514 e salvarli in file dedicato senza duplicare in /var/log/messages.

File

  • 99-mikrotik.conf: Configurazione rsyslog
    • Template custom MikroTikRawFormat (salva log raw)
    • Ruleset dedicato mikrotik con STOP (evita duplicati)
    • Input UDP:514 per log MikroTik
    • Permessi automatici: utente ids, gruppo ids

Installazione Automatica

cd /opt/ids
sudo ./deployment/setup_rsyslog.sh

Lo script:

  1. Rimuove vecchie configurazioni conflittuali
  2. Installa 99-mikrotik.conf in /etc/rsyslog.d/
  3. Crea directory /var/log/mikrotik/ con permessi corretti
  4. Verifica sintassi rsyslog
  5. Configura firewall (UDP:514)
  6. Riavvia rsyslog

Verifica Funzionamento

# Verifica rsyslog in ascolto su UDP:514
netstat -ulnp | grep 514

# Monitora log in arrivo
tail -f /var/log/mikrotik/raw.log

# Verifica permessi
ls -lh /var/log/mikrotik/raw.log
# Output atteso: -rw-r--r-- ids ids

Configurazione Router MikroTik

Configura i router per inviare log al server:

/system logging action
add name=remote-ids target=remote remote=<IP_SERVER> remote-port=514

/system logging
add action=remote-ids topics=firewall

Troubleshooting

Errore: Template già impostato

error: omfile: default template already set via module global parameter

Soluzione: Lo script rimuove automaticamente vecchie configurazioni conflittuali.

Log duplicati in /var/log/messages

La configurazione usa stop nel ruleset per evitare propagazione.

Permessi negati

# Verifica/ripara permessi
sudo chown -R ids:ids /var/log/mikrotik/
sudo chmod 755 /var/log/mikrotik/
sudo chmod 644 /var/log/mikrotik/raw.log

Firewall blocca UDP:514

sudo firewall-cmd --permanent --add-port=514/udp --zone=public
sudo firewall-cmd --reload

File Log

  • Path: /var/log/mikrotik/raw.log
  • Owner: ids:ids
  • Permissions: 0644
  • Format: Raw syslog message (no timestamp/hostname prefix)

Note Tecniche

  • Sintassi moderna: rsyslog v8+ con template(), ruleset(), action()
  • No legacy syntax: Evita conflitti con $ActionFileDefaultTemplate
  • Ruleset dedicato: Isolamento completo per log MikroTik
  • STOP directive: Previene duplicazione in altri file log