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Thread ID: 67949 2006-04-11 05:57:00 PORTS: Should they be "closed" or "stealthed" symiggy (7597) Press F1
Post ID Timestamp Content User
445687 2006-04-11 05:57:00 I was wondering if anyone could kindly explain what is really meant by the ports being closed as opposed to stealthed .

At the "Shields Up!" web site, on checking my common ports I received the message that the scan had "failed" since one of my ports was closed but not stealthed .

The port referred to was number 0 .

On previous occasions when I have logged onto this site I have not had this response IE all my ports were stealthed on other occasions .

I use a D-Link router to connect to the internet and on discussing this issue with the D-Link help desk, the technician informed me that this was of no consequence .

My question is: Is this of any security significance and if so, how do I change my settings to "stealth" the port? :confused:

Many thanks .
symiggy (7597)
445688 2006-04-11 06:10:00 People get "excited" about stealthing ports over closed ports. Stealthed ports just simply drop the traffic without giving a response, whereas closed ports reply with "nothing to see here fool".

For a sample flame war over it all read this (www.dslreports.com)

Port 0 is reserved I believe, but maybe they are refering to ICMP (a.k.a. ping) here...
gibler (49)
445689 2006-04-11 06:12:00 stealth is a bit better but not by much .

think of a door . . . . . .
open is a open door, hackers can get in
closed is a closed door and the hackers cant get in .
stealth is a door that is hidden in such a way the the hackers dont know about it at all .



an open port will let another computer connect .
a closed port will say NO to a connection
a stealth port will not respond at all as if there was no computer at the other end .
robsonde (120)
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