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Posted by David on March 20, 2006, 4:03 pm
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Hi
Just wondering if I have a security problem. GRC reports that port 80
is open. Looking at my Norton Internet security firewall, Skype is
listening on port 80. Do I need to be concerned by this at all? Is
Skype compromising my security ? Can I close incoming port 80 and still
run Skype ? Any advice most welcome
David
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Posted by Sebastian Gottschalk on March 20, 2006, 4:19 pm
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David wrote:
> Hi
>
> Just wondering if I have a security problem.
Because of Skype, alway.
> GRC reports that port 80 is open.
Get a useable online portscan. I recommend
> Looking at my Norton Internet security firewall,
You have a BIG security problem.
> Skype is listening on port 80.
As configured. Your point being?
> Do I need to be concerned by this at all?
Yes, but I guess you won't get the point anyway.
> Is Skype compromising my security?
Sure, but not because of your argument.
> Can I close incoming port 80 and still run Skype?
Yes. Why are you asking?
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Posted by Sebastian Gottschalk on March 20, 2006, 4:20 pm
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> Just wondering if I have a security problem.
Because of Skype, always.
> GRC reports that port 80 is open.
Get a real online portscan. I recommend
<http://linux-sec.net/Audit/nmap.test.gwif.html> for gaining some
reliable and usable results.
> Looking at my Norton Internet security firewall,
You have a BIG security problem.
> Skype is listening on port 80.
As configured. Your point being?
> Do I need to be concerned by this at all?
Yes, but I guess you won't get the point anyway.
> Is Skype compromising my security?
Sure, but not because of your argument.
> Can I close incoming port 80 and still run Skype?
Yes. Why are you asking?
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Posted by Volker Birk on March 20, 2006, 4:28 pm
If you were Registered and logged in, you could reply and use other advanced thread options > Just wondering if I have a security problem. GRC reports that port 80
> is open.
http://grcsucks.com
> Looking at my Norton Internet security firewall, Skype is
> listening on port 80.
Better forget Norton InSecurity.
> Is
> Skype compromising my security ?
Yes:
ftp://ftp.iks-jena.de/pub/mitarb/lutz/hacking/Biondi:Skype-deciphered:Blackhat-EU-06.pdf
Yours,
VB.
--
At first there was the word. And the word was Content-type: text/plain
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Posted by Duane Arnold on March 20, 2006, 5:29 pm
If you were Registered and logged in, you could reply and use other advanced thread options
> Hi
>
> Just wondering if I have a security problem. GRC reports that port 80
> is open. Looking at my Norton Internet security firewall, Skype is
> listening on port 80. Do I need to be concerned by this at all? Is
> Skype compromising my security ? Can I close incoming port 80 and still
> run Skype ? Any advice most welcome
Apparently, this Skype is listening on port 80 and it has it open for
incoming.
To say that your machine is open to attack because port 80 is open, may
not be the case. If the machine has a Web server running and
listening on port 80 too, you might have some trouble I would think.
After all, something on the other end that is listening has to be
attackable that can be used to exploit the machine.
You got any reports on this Skype a VOIP solution being attacked over
the Internet?
At the very least, you should try to secure the O/S a little more if
you have an NT based O/S.
If you're not using Skype 24/7 365 then close it down and close the port
when you're not using it.
Duane :)
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