Network Insight - Service Ports

In the Service Ports step, specify the following:

• State: Use the switch to Enable or Disable TCP scanning for service ports.

• TCP Scan Technique: Select the TCP technique you want to use for the discovery. The default is SYN.

  • SYN: Choose this to quickly perform scans on thousands of TCP ports per system, never completing connections across any well-known port. SYN packets are sent and the poller waits for a response while continuing to scan other ports. A SYN/ACK response indicates the protocol port is listening while an RST indicates it is not listening. The SYN option presents less impact on the network.

  • CONNECT: Choose this to scan IPv6 networks. Unlike the SYN option, complete connections are attempted on the scanned system and each successive TCP protocol port being scanned.

 In the Service Ports section, click Add and specify the following in the table:

• SERVICE: From the drop-down list, choose the service you want to scan. Alternatively, you can also enter a value.

• PORT: Enter the port for the service. Once a service is selected, the value for PORT is automatically populated. To configure a different value for PORT, toggle Override and specify a different value.

• PROTOCOL: From the drop-down list, choose TCP or UDP.