Re: Best free firewall software

zzy <anon@xxxxxxxxxxx> wrote:
There are a bunch of internet port scanner services that can test you
from the outside. They'll tell you if you have any ports open.
Can you recommend a couple? I mentioned grc.com a couple of days ago and
got only a long list of diatribes against the site and its author, but
no suggestions for alternates.

Just use nmap in your LAN and/or netstat locally. By concept it is not
possible to do this job in a good way from remote, because there may be
temporary filtering "on the way" while testing, and a remote scanner has
no chance to detect this.

Yours,
VB.
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