I did the usual:

./configure
make
su -c "make install"

but get an error after make and make install. Here is the end of it where I think the error is, I don't think you wanna see the whole output.

/usr/lib/gcc-lib/i486-slackware-linux/3.2.3/../../../../i486-slackware-linux/bin/ld: cannot find -lssl
collect2: ld returned 1 exit status
make[2]: *** [firestarter] Error 1
make[2]: Leaving directory `/home/tj/dl/firestarter-0.9.2/src'
make[1]: *** [install-recursive] Error 1
make[1]: Leaving directory `/home/tj/dl/firestarter-0.9.2/src'
make: *** [install-recursive] Error 1

Anyone got any idea what's wrong?

if you don't get any error while configuration and making then problem is in installation or you have to configure and make as root then make install as root in root konsole not su -c make install,because su -c won't work in this case I think.

I actually didn't do: su -c "make install" but just typed that for simplicity, I realy just sued and run the command...

Anyway, I tried running everything, even ./configure, as root. Still no luck getting the same error msg. Anyone else had trouble installing this application?

no problem here but you could try and download an iptables script instead
http://www.linuxguruz.com/iptables/

If I can't get this working, I'll probably use somebody elses script, or more than likely write my own rules. I planned on writing my own eventually but just wanted to get it setup quick and easy for now...

Are you using the 0.9.2 version? That's the latest.

yeah thats the one I have but I don't use it anymore it has a tendency of "locking up" my DSL connection when it get disconnected (receiving phone call)