UDP fullblock

In the Urime Data Protocol, or UDP, a device can prevent all incoming and outgoing communications involving it and a specific device. Such technical action is called a fullblock because it fully blocks the transmission of data between points.   
==What does this mean?==
Let me give an example. The point cool.checkitout is attempting to establish a connection with com.user.xtakh.5454.
 call com.user.xtakh.5454
 calling com.user.xtakh.5454 with 8 bytes of data
 ID: cool.checkitout:0000000006
 Error connection could not be established, point not found.
 transmission failed. do not reattempt connection.
The device com.user.xtakh.5454 set up a blackhole firewall to block all incomng communications from cool.checkitout and to prevent it from communicating with cool.checkitout. Thus, when either tries to communicate with the other, it will receive a requested point not exist error message.