Figure 1.2
The above image shows that you have an option to manually configure the port
ranges and the type of ports you which to block as well. This is called the "User
Define Service". The user can select either the TCP or UDP protocol. Then you
must enter the exact port ranges you which to filter. In this section, you are also
given the option to set up the particular "Schedule" of when you want this filter to
take effect.
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