Hacker or Just a poser?

[no mods]

OKay well I was trying to get members to my site, Via AIM, and then I had these conversation, which kinda scared me, I dont know if he was just messing with me or not.



Nb567Od [5:40 P.M.]: http://gamingnubs.com/index.php
KurruptOwner [5:40 P.M.]: whos dis
Nb567Od [5:41 P.M.]: my site
KurruptOwner [5:54 P.M.]: oh
KurruptOwner [5:54 P.M.]: can i hack it
Nb567Od [5:54 P.M.]: um no please
KurruptOwner [5:54 P.M.]: y
Nb567Od [5:54 P.M.]: cause it my only site
KurruptOwner [5:54 P.M.]: are u part of mods4hire
Nb567Od [5:55 P.M.]: no thats my site, were not really about modding
KurruptOwner [5:55 P.M.]: do u need any help
Nb567Od [5:56 P.M.]: i just need members
KurruptOwner [5:56 P.M.]: wats ur name on it
Nb567Od [5:56 P.M.]: xx nub xx
KurruptOwner [5:56 P.M.]: oh
KurruptOwner [5:56 P.M.]: do u need 5 dollars
Nb567Od [5:57 P.M.]: um i guess
KurruptOwner [5:57 P.M.]: lo,
KurruptOwner [5:57 P.M.]: dam u have alot of bots
Nb567Od [5:57 P.M.]: haha
KurruptOwner [5:57 P.M.]: omg ogrizzle is ur moderator
KurruptOwner [5:57 P.M.]: im leaving
KurruptOwner [5:58 P.M.]: u shits so illegal lol
Nb567Od [5:58 P.M.]: no im payed
KurruptOwner [5:58 P.M.]: ok let me c here
KurruptOwner [5:58 P.M.]: ill look
KurruptOwner [5:59 P.M.]: if y have over 2 cracks in ur board then its illegal
Nb567Od [5:59 P.M.]: 2 cracks?
KurruptOwner [6:00 P.M.]: ur on my trusted list
KurruptOwner [6:00 P.M.]: ok
Nb567Od [6:00 P.M.]: ok
KurruptOwner [6:00 P.M.]: ill tell fisher not to hack u also and team l3thal
Nb567Od [6:00 P.M.]: thanks
KurruptOwner [6:00 P.M.]: np
KurruptOwner [6:00 P.M.]: u really need a firewall tho
KurruptOwner [6:01 P.M.]: u really need some help man
Nb567Od [6:01 P.M.]: how do i get a firewall?
KurruptOwner [6:02 P.M.]: add it



After reading this I have two questions.
1.) Is my site really that easy to hack, and if so how can I make it safier.

2.) Is there such thing as a firwall for my site, and how would I even install that.