Steve Gibson has some good resources available for the average user at his webs site. (For those of y’all who may not be familiar with the name, Gibson’s the guy who developed the venerable–and still useful, especially in its newest iteration–SpinRite.) One of the useful lil tools he offers at his site is Shields Up! While the tool only tests the first 1056 ports on your computer, it’s nevertheless a useful measure of your firewalling.
Between my ISP’s watchful eye, my “hardware” SPI firewall in my router and Windows 7’s built in firewall, that installation on this computer results in a very respectable showing on Gibson’s tool.
Not surprisingly, the results are the same when browsing in a Linux Mint or Puppy Linux or PCBSD session hosted on the same machine–as long as I remember to configure Puppy’s firewall (the others are configured and turned on by default in modes that effect the same results on this test as Win7’s firewall; Puppy’s firewall must be turned on–once; after that it “remembers” its settings like the rest).
Other security scans can be found at Audit My PC and PCFlank, among a wide range of places. Each scanner has its own set of strengths and weaknesses, so multiple scans with different tools would probably yield a “best mix” of information.
DO check links to scanner tools out with something like AVG’s Linkscanner or McAffee’s less trusted (by me) Site Advisor, especially if your browser of choice doesn’t have a reliable tool to warn you about suspicious sites.
NOTE: None of the port scanning tools I know of will definitively demonstrate that you are really secure, but they can give you a good idea of common areas of weakness. If you then also have well-rated (by reliable, known sources such as WestCoast Labs), up-to-date anti-malware software, and keep it up to date and turned on, AND you practice usual and customary safe computing, you should be fairly safe.
But note well: break any link in the chain, and you WILL become infected with malware. The weakest link? Simple, safe computing practices, like being careful where you travel on the web, NEVER installing software you’ve not “manually” scanned with a reliable, up-to-date anti-malware, avoiding CLICKing on links in emails and NEVER opening attachments unless you
1. Know absolutely, exactly, beyond any shadow of doubt what it is you are opening and
2. Have nevertheless manually scanned it with a reliable, up-to-date anti-malware BEFORE even considering opening the thing
Seriously. I don’t care if Great Aunt Sadie would never send you a virus, trojan or worm. DO NOT OPEN THAT ATTACHMENT FROM HER! Especially not from her. *heh*
Continue reading “Shields Up!”
