I've heard that Nessus scan times can be inconsistent. Can anyone explain what that means in practical terms?
Founder
Scan times depend on your network and configuration. Nessus scan duration varies based on several factors, including network size, number of enabled plugins, and configuration complexity. Scanning a large network with many devices takes longer than scanning a smaller subset with limited checks. Peak usage hours can increase scan times due to network congestion. Hardware capabilities, system resources, and network speed also affect scanning performance. Limited system resources lead to slower processing times. Nessus works well for organizations with dedicated infrastructure and resources for vulnerability scanning. If you need fast scans without impacting network performance, you may need fine-tuning. A trade-off exists: enabling more checks provides broader coverage but increases scan times, which may conflict with your need for quick assessments. Run smaller, targeted scans during busy hours and schedule comprehensive scans when network activity is lower. This approach reduces user impact while maintaining security visibility.