how to tell which tcp ports are open?
[Deleted User]
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Using something like dos command 'netstat' is it possible to get a definative answer on what tcp ports are open to the world?
Alos how do i 'ping' myself to test if that is reponding (i dont want it to)?
Mike
Alos how do i 'ping' myself to test if that is reponding (i dont want it to)?
Mike
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Online ping test.
Another one you can try is PC Flank.
thanks ...
but why does your online port scanner say all ports are stealther and Nortons says i have ports open???
Mike
If so then the online port tests will only be seeing what ports that has open (usually only forwarded ports) where as Norton is reporting what the PC has open and could be accessed by someone on your LAN.
Norton is reporting on your PC, from your PC's point of view. It's much more reliable to use an online port scanner to see which ports are open to the Internet (because the online port scanner is scanning from the Internet - Norton is not).
no router... but i have one, a wirless one, is it better to use it then?
Mike
Actually it was Nortons website based scanner, so why the discrepancy I wonder??
Mike
Just out of curiosity, which ports did the two scans disagree on?
the scan site someone mentioned on here said all ports are stealthed.
with norton they are just closed apart from:
ICMP Ping
22 SSH TCP connections to this port might indicate a search for SSH, which has a few exploitable features. SSH is a secure replacement for Telnet. The most common uses of SSH are to securely login and copy files from a server
80 HTTP (Hypertext Transfer Protocol). HTTP is used to transfer Web pages over the Internet. Port 80 should be open only if you're running a Web server.
...which are open!
That despite the firewall being turned up full, all windows updates to date, and all security software up to date!
So how so different??
Mike
when i first used dnsstuff i was using a specific proxy (cardiff?) and the dns site said it was unable to function as the server concerned was infected with malware!
Maybe ntl's servers are affected and thus affecting us??
Mike
If your passing this ok then your firewall is operating correctly.
Thanks for the explanation!
But.... the reason for asking this was my computer being hijacked by trojan horses a while ago. I presumed i was doing something wrong, or that Norton was. Now Im confused and dont know how they got on my machine!
Still, touch wood, I did a format and reinstall and all seems well at the moment....
Mike
Running programs that you downloaded over P2P
Clicking on "Yes I would like to get something free" pop-ups on dodgy web sites
Running a "funny" program attached to an email from a buddy
No amount of fire wall or port blocking will stop a program that you have just told your computer to run.
i agree! lololol
..but if only i had actually done that i wouldnt have minded!
it even defeated my IT mate..
Mike
Spyware Blaster
Spyware Guard
IE Spyad
Some scanners to use if you think you already got them..
Ad-Aware SE
Spybot Search & Destroy
and some Anti-Trojan Software..
Ewido Anti-Spyware
a-squared