Security Troubleshooting Guide 🛡️

Common Security Issues 🔍

• Authentication Failures

  • Check user credentials 🔐
  • Verify MFA settings ⚙️
  • Review login activity 📊

• Network Vulnerabilities

  • Scan for open ports 🧭
  • Update firewall rules 🛡️
  • Monitor traffic logs 📁

• Permission Errors

  • Audit access controls 🔑
  • Adjust user roles 📌
  • Check ACL configurations 📜

Troubleshooting Steps 🛠️

1. Isolate the issue

   • Use tools like tcpdump or Wireshark 📶
   • Check system logs with journalctl or Event Viewer 📖

2. Test connectivity

   • Ping target systems 📡
   • Traceroute to identify bottlenecks 🔄

3. Validate configurations

   • Review SSH settings for vulnerabilities 🔌
   • Ensure TLS/SSL protocols are up-to-date 🔒

Recommended Tools 🧰

• Vulnerability Scanners
  Nessus 🔎
  OpenVAS 🧪

• Monitoring Solutions
  Zabbix 📈
  Prometheus 📊

Best Practices 📌

• Regularly update software 🔄
• Enable 2FA for all accounts ⚙️
• Backup critical data 🧱