April 05
Prof. Ismael H. F. Santos -  ismael@tecgraf.puc-rio.br                                                          2
Understanding Ports
nThe TCP and UDP protocols use ports to map incoming data to a particular process running on a computer.
server
    P
o
r
t
Client
TCP
TCP or UDP
port
port
port
port
app
app
app
app
port#
data
Data
Packet