Telecommunications Denial of Service (TDOS) Protection

Telecommunications Denial of Service (TDOS) attacks pose a significant threat to communication infrastructures, aiming to disrupt services by overwhelming systems with excessive traffic. Effective TDOS protection is essential to ensure uninterrupted service and maintain the integrity of your telecommunications systems.

Features Overview

Our TDOS protection policies offer robust mechanisms to detect and mitigate denial of service attacks in real-time. Key features include:

• Rate Limiting per Policy: Configure specific rate limits to control the number of calls within a defined time window, preventing overloads.
• Attack Behavior Detection: Identify and block malicious actors exhibiting aggressive calling patterns without recording individual numbers.
• Temporary Blocking Mechanism: Automatically block offending numbers for a short duration, reducing the risk of prolonged disruptions.
• Customizable Thresholds: Set call thresholds, time windows, and expiration times to adapt to changing traffic patterns and threat levels.

Feature Requirements

• Call Telemetry Server Appliance 0.8.4 or later
• Call Telemetry Advanced or Demo License
• Cisco Callmanager 8.5 Integration Recommended
• CURRI or XCC Integration with Call Telemetry

TDOS Detection and Blocking Process

Implementing TDOS protection involves setting up call policies that monitor call traffic and enforce rate limits based on defined parameters. Here's how to configure and manage TDOS protection:

Configuring Rate Limits

1. Enable TDOS Protection:

   • Ensure that DOS Attack Protection is enabled on your Call Telemetry policy.

2. Access TDOS Protection Settings:

   • Navigate to Settings > TDOS Protection in your Call Telemetry dashboard.

3. Set Call Thresholds:

   • Define the maximum number of calls (e.g., 50 calls) allowed within a specific time window (e.g., 30 seconds).

4. Determine Expiration Time:

   • Specify the duration (e.g., 5 minutes) for which offending numbers will be temporarily blocked.

5. Save Changes:

   • Save the configuration to activate the TDOS protection on the policy.

Managing Blocked Numbers

• View Blocked Numbers:
  • Click "Active TDOS Offenders" to Monitor the list of blocked numbers in the TDOS Protection settings.

Benefits of TDOS Protection

• Enhanced Security:

  • Protects your telecommunications infrastructure from disruptive TDOS attacks.

• Real-Time Detection:

  • Identifies and mitigates threats as they occur, ensuring minimal service disruption.

• Scalability:

  • Easily adjust policies to accommodate varying traffic loads and threat intensities.