<s>
In	O
computer	B-Architecture
networking	I-Architecture
,	O
north-south	B-General_Concept
traffic	I-General_Concept
is	O
network	O
traffic	O
flowing	O
into	O
and	O
out	O
of	O
a	O
data	B-Operating_System
center	I-Operating_System
.	O
</s>
<s>
Based	O
on	O
the	O
most	O
commonly	O
deployed	O
network	B-Architecture
topology	I-Architecture
of	O
systems	O
within	O
a	O
data	B-Operating_System
center	I-Operating_System
,	O
north-south	B-General_Concept
traffic	I-General_Concept
typically	O
indicates	O
data	O
flow	O
that	O
either	O
enters	O
or	O
leaves	O
the	O
data	B-Operating_System
center	I-Operating_System
from/to	O
a	O
system	O
physically	O
residing	O
outside	O
the	O
data	B-Operating_System
center	I-Operating_System
,	O
such	O
as	O
user	O
to	O
server	O
.	O
</s>
<s>
Southbound	O
traffic	O
is	O
data	O
entering	O
the	O
data	B-Operating_System
center	I-Operating_System
(	O
through	O
a	O
firewall	B-Application
and/or	O
other	O
networking	O
infrastructure	O
)	O
.	O
</s>
<s>
Data	O
exiting	O
the	O
data	B-Operating_System
center	I-Operating_System
is	O
northbound	O
traffic	O
,	O
commonly	O
routed	O
through	O
a	O
firewall	B-Application
to	O
Internet	O
space	O
.	O
</s>
<s>
The	O
other	O
direction	O
of	O
traffic	O
flow	O
is	O
east-west	B-General_Concept
traffic	I-General_Concept
which	O
typically	O
indicates	O
data	O
flow	O
within	O
a	O
data	B-Operating_System
center	I-Operating_System
.	O
</s>
