On 2009-06-24 Ken Pryor wrote:
> Hello all, I just joined the list and this is my first post to it. I
> am a networking noob and am not sure if this is something I should
> worry about or not. I just set up a Smoothwall Express firewall and
> later ran a Shields Up scan at grc.com It showed all ports as stealth
> except one, port 113, which it showed as closed. Shields Up gave my
> system a "failed" score based on that one port showing as closed. My
> question is, is this anything I need to worry about and, if so, how
> might I fix it?
There is no such thing as "stealth" in IP networks. That's braindead
marketing babble from people who failed to understand how TCP/IP works.
Not responding to SYN or ICMP packets does not magically make your host
invisible.
A port being reported as "closed" is perfectly fine, because the result
means that there's no service listening on that port. If anything, you
should be worried about ports that show up as "stealth".
And don't bother with "Shields Up". If you want to do a portscan, use
something like nmap.
Regards
Ansgar Wiechers
--
"The Mac OS X kernel should never panic because, when it does, it
seriously inconveniences the user."
--http://developer.apple.com/technotes/tn2004/tn2118.html
Securing Apache Web Server with thawte Digital Certificate
In this guide we examine the importance of Apache-SSL and who needs an SSL certificate. We look at how SSL works, how it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates.
> Hello all, I just joined the list and this is my first post to it. I
> am a networking noob and am not sure if this is something I should
> worry about or not. I just set up a Smoothwall Express firewall and
> later ran a Shields Up scan at grc.com It showed all ports as stealth
> except one, port 113, which it showed as closed. Shields Up gave my
> system a "failed" score based on that one port showing as closed. My
> question is, is this anything I need to worry about and, if so, how
> might I fix it?
There is no such thing as "stealth" in IP networks. That's braindead
marketing babble from people who failed to understand how TCP/IP works.
Not responding to SYN or ICMP packets does not magically make your host
invisible.
A port being reported as "closed" is perfectly fine, because the result
means that there's no service listening on that port. If anything, you
should be worried about ports that show up as "stealth".
And don't bother with "Shields Up". If you want to do a portscan, use
something like nmap.
Regards
Ansgar Wiechers
--
"The Mac OS X kernel should never panic because, when it does, it
seriously inconveniences the user."
--http://developer.apple.com/technotes/tn2004/tn2118.html
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Securing Apache Web Server with thawte Digital Certificate
In this guide we examine the importance of Apache-SSL and who needs an SSL certificate. We look at how SSL works, how it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates.
http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be442
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