What tool can help gather information about network connections to and from an affected system?

Netstat is a powerful command-line tool used to monitor network connections and troubleshoot network issues. It provides essential information about active connections, including both incoming and outgoing TCP/IP connections, their status, and the ports being used. When responding to an incident, understanding which devices are connected to an affected system and what data may be flowing to and from it is critical. By using Netstat, an incident handler can identify potential unauthorized connections or communications that may indicate the presence of a security breach or malware activity.

The other options do not provide the same functionality as Netstat. Net-gain is not a recognized standard tool in network management. Ndtstat does not exist as a commonly used tool within the networking context, and NetIDS, while related to intrusion detection systems, does not focus specifically on gathering current network connection information in the way that Netstat does.