Solved Transmission Port are closed. Is it my fault?

November 21, 2015 at 20:42:31
Specs: Windows 10
I have plugged my PC directly into my modem, completely bypassing the router. I have disabled any and all antivirus and firewall applications. I have contacted my ISP by phone and email and have confirmed that they are not blocking ports yet, when i check any port checker website, they ALL say the ports are still closed. Only 4 ports are open: 80, 135, 139, and 445. Is it something i'm doing wrong, could it be a problem with the port checkers? My IP is not private, I pay extra for a public one. Any ideas?

See More: Transmission Port are closed. Is it my fault?

Report •


✔ Best Answer
November 22, 2015 at 06:15:54
All ports should be closed except those in immediate use. Open ports are a way in to hackers, which is why you have a firewall. If your system is good, not only should the ports be closed but to the outside world they shouldn't even be visible. The latter is called "stealth" and there are various testers to verify this is the case, such as here:
https://www.grc.com/x/ne.dll?bh0bkyd2

Always pop back and let us know the outcome - thanks



#1
November 21, 2015 at 21:20:33
What ports you expect to be open???
Are you running any software that uses specific ports?

If no software is listening to a specified ports than the port is "closed"

The more ports you have open the higher the possibility you become a target for hacking. That is were a firewall comes in to inspect incoming and outgoing traffic for possible attacks.

The port you mention:
80 = HTTP
135 = DCE ENDPOINT could be a MS service like DHCP, DNS, WINS, ...
139 = NetBIOS session service
445 = MS active directory, SMB shares

more info: https://en.wikipedia.org/wiki/List_...

Now, what is your concern?


Report •

#2
November 21, 2015 at 21:31:29
So what is the point of port checkers if they don't check ports?

Report •

#3
November 21, 2015 at 23:13:50
As sluc has explained, port checkers can only check open ports - i.e. ports that services are listening on. What ports do you expect to be open?

Report •

Related Solutions

#4
November 22, 2015 at 06:15:54
✔ Best Answer
All ports should be closed except those in immediate use. Open ports are a way in to hackers, which is why you have a firewall. If your system is good, not only should the ports be closed but to the outside world they shouldn't even be visible. The latter is called "stealth" and there are various testers to verify this is the case, such as here:
https://www.grc.com/x/ne.dll?bh0bkyd2

Always pop back and let us know the outcome - thanks


Report •


Ask Question