Please help me, i have a question about DSL internet connection ?

[kissbaby3]

my internet connection works just fine, i was snooping around on my Linux pc and decided to look at my internet "connection information" and where it says security , it says "none", ha ha , i have been using it this way for several months now , everything seems fine. here is a screen shot of what i am talking about, i blacked out some stuff, tho . so is this ok ?, should i be worried ?. please help, lol.  i want to say thanks to every one.