Because UDP packets are also significantly high in volume, you can also define a UDP filter the same way you do a TCP filter. To work with UDP filters, select the Filters.../UDP... option. You can opt to display all UDP packets, no UDP packets, and define a custom UDP filter. Other than the first two options, the others are almost identical to the custom TCP filter options. Custom UDP filters can be defined, edited, and deleted as TCP filters. See the section on TCP Filters in this chapter.