Name

Destination Port

Synopsis

Identifies the message’s destination, as referenced by the 16-bit UDP port number in use by the application on the destination system.

Size

Sixteen bits.

Notes

This field identifies the port number used by the destination application.

Capture Sample

In the capture shown in Figure 6.5, the Destination Port field contains the hexadecimal value of 00 45, which equals decimal 69, the well-known port number for TFTP servers.

The Destination Port field
Figure 6.5. The Destination Port field
See Also

Source Port

UDP Ports

Get Internet Core Protocols: The Definitive Guide now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.