Can you please help with a short steem lession to understand (NSFW) , Network Security FireWall !!!??

in steem •  7 years ago 

When do I see it when it applies ?, is its automatic anti-spam detection
translation that always happen in my mind detailed below
N=Network
S=Security
F= Fire
W=Wall

especially the as it seems to associated with safety!!

steem help
7 years ago by

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