[Alug] Firewall testing

Hi all, I just got around to updating my firewall to use IPtables and was wondering how could I check that I havn't left any big hole in it? I know about online port-scanners but how do I know if they are reliable? (indeed you can ssh to my machine and http from the outside world but the online ones I just tried seemed to ignore this little fact) I short does anyone know a good online portscanner or is anyone willing to run NMAP or nessus against me? Thanks Adam -- This message is Copyleft - all rights reversed Adam