I apologize for my lack of knowledge.

Ok, but I have some doubts as far as how I would go about first blocking
all traffic "anywhere" from the servers lan except for the few ports
allowed.

For example, won't dns requests use random source ports when queries are
made? Something like (from lsof on the server), I have some named
entries like this:

named      1620     named   29u     IPv4  102898568                  TCP
server1.americasnet.com:32858->cpe-24-24-238-161.socal.res.rr.com:domain
(SYN_SENT)
named      1620     named   30u     IPv4  102906041                  TCP
server1.americasnet.com:57631->cpe-24-24-213-189.socal.res.rr.com:domain
(SYN_SENT)


If I REJECT all traffic, would random source ports like this be blocked,
or would opening up domain take care of that?


Another question, should the REJECT rule be at the end of the rules file
so that it picks up only after all the ACCEPT rules?





On Mon, 2008-09-08 at 19:43 -0700, Tom Eastep wrote:
> Ricardo Kleemann wrote:
> 
> > However I understand I need to also block outbound for those ports as
> > being sources as well. How would I go about doing that?
> 
> I have no idea what you are talking about. The rules that you posted looked 
> adequate to me (or at least as adequate as is possible in your case).
> 
> -Tom
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