Clyde Wilson wrote:
When I run "shieldsup" at grc.com it says my firewall sucks. I would like to plug obvious leaks in my home system...
I for one would not trust "Shields Up". Firstly I believe it is targeted at MS OS's and secondly I wouldn't even trust it for that as it only scans a few (well known) ports (IIRC). I don't think much of S. Gibson either but that is another story. Why use a badly designed tool which gives false results when the people who are trying to get into your computer use only the best?
You would be better off using a number of scans from a variety of sources, perhaps using nmap as others have suggested. One site I use is: http://www.linux-sec.net/Audit/nmap.test.gwif.html it allows you to use nmap with *user* *defined* *options* (see nmap manpage on google). There are many online scans if you google: "nmap online" or some such similar thing.
HTH, Brett