Hi ; GRC ShieldsUP!..curious..Never really tried it out though I am using a firewall. I just forego it. Hoping to understand it better/further, I decided to ask your opinions on this..leaktest. There are a lot of questions here I hope I won't bore you guys here. A lot are very basic to you gurus but I'd really like to learn more..(this is new to me..thank you). Here goes: What is a leaktest? Is there only one type or there are others?(I saw Comodo leaktest/Matousec's but you have to download it to your pc..unlike GRC's which is online...) Why is there a need for it (leaktest)? Is there a second opinion testing or a second opinion leaktest? What's the difference with Comodo leaktest and GRCShieldsUP! I also looked at Matousec's and found out they have also a leaktest but you have to download it unlike GRC's....Is this(Matousec's) for only grading firewalls they rate at their site or can I use that privately here at home? Is it safe to use that one that you can download like Matousec's/Comodo? I'm afraid my system will go whack if I use it/them... Can you give me some inputs and approaches on how to use those leaktest that can be downloaded? What's the best approach to pass a leaktest? If you don't avail of the leaktest, what maybe be additional secure ways to be safe online? Thanks in advance for any inputs!