[Courses] [Security] Firewalls: Ipchains syntax and implementation

[Malcolm-Rannirl]

My dumb questions for the day. :)

> > > One machine goes on 10.1.1.0, and becomes the gateway for everything
> > > else in the company.

> >         Er -- surely you mean 10.1.1.1?  10.1.1.0 is the IP that
> >represents the entire /24 netblock.

I was actually meaning to ask someone about this. Why is the .0 address 
special? (We have a server at work that's at 10.128.0.0, which I'm guessing 
from the above is a bad thing).

It also never quite understood the "/n" part of a.b.c.d/n. It's probably 
fairly simple, but I've not seen an explanation.


Thanks.