So I installed Firestarter last night and went through the wizard to set it up, but it doesn't seem to be doing much of anything. I ran a firewall test at http://scan.sygatetech.com/ and basically, all of my ports except for a couple were closed but not blocked.

How can I beef this up? I figure if sygatetech's little website probe can find so many potential holes a good hacker or cracker worth his or her salt would have a field day.

I checked Firestarter's site but basically what it told me to do is what I have done, and that doesn't seem to do much:

Ran the wizard.
Selected IP assigned by DHCP.
Disabled public access to all services (I don't run any kind of LAN or servers).
Enabled TOS filtering on the Client apps, server apps, and X Windows system packets, using reliability mode.
Enabled ICMP packet filtering on all the options offered to me.

That's it. According to firestarter's site, my firewall should be set up. Yet, I still get the same results from sygatetech's probe. Any pointers?
-david

The only difference I have is have Disbale TOS filtering on the Client Apps, but every other one is the same (well, I connect via dialup) and I am completely stealthed. I used the same site to verify I had mine set up correctly.

Regular Scan...

Trying to find out your computer name...
Unable to determine your computer name!
Trying to find out what services you are running...
Unable to detect any running services!

Stealth Scan...all blocked.

I guess another difference is I am on Redhat 8.0. I did this with
firestarter running AND exited, to verify persistence, and the
results were the same.

I guess an obvious thing, is the selection of your internet connection device set to eth0 and not ppp, etc.

RO