securing a box

[Slyoldfox most-wanted com]

I just set up RH 5.2 on my PC and since I'll have cable soon I'll
keep the PC on 24/24. So i'll need to secure the box so it doesn't
gets hacked... what are the basic files I have to secure... or what
can I install to secure the box in some way.
I would like to give access to some of my m8s tho ...
So I can't completely lock the incoming traffic ..
Please help me out of this ... otherwise i'll have to go back to
Windows and I don't want that :PPPPPP

[mod: Please summarize in about a week OK? -- REW]

tanx Slyoldfox
Slynet Pandora be


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