Search found 3 matches

by Charles L. Cotton
Wed Mar 18, 2020 10:03 pm
Forum: Technical Tips, Questions & Discussions (Computers & Internet)
Topic: Need help opening ports
Replies: 8
Views: 24093

Re: Need help opening ports

RottenApple wrote: Wed Mar 18, 2020 6:17 pm
Charles L. Cotton wrote: Wed Mar 18, 2020 2:29 pm Well, the problem is solved, but this is interesting. If I run a port check from one of the many websites, the ports I opened in the Tenda router show to be blocked. However, when I run a "port check" in the software I need to use, the check shows all five ports to be "ok" meaning they are open. :headscratch

Thanks folks.
Chas.
Charles,

Ports work both ways: Inbound and Outbound. Port 80 (standard HTTP port) is open for outbound traffic by default. But that same port (80), will also be closed to inbound traffic by default. When you checked from "one of the many websites", they were testing the inbound access of the ports. But when you "run a "port check" in the software", it's only looking at outbound access. In effect, each port has 2 settings (one of each):

Inbound (outside your network to inside your network):
In-Allow (WAN-LAN Allow)
In-Deny (WAN-LAN Deny)
In-Drop (WAN-LAN Drop)

Outbound (inside your network to outside your network):
Out-Allow (LAN-WAN Allow)
Out-Deny (LAN-WAN Deny)
Out-Drop (LAN-WAN Drop)

If a site outside your network shows a port is blocked, then that would be In-Deny. If the software (which is inside your network) shows that the same port is open, then that would be Out-Allow.
Then I need to make sure the inbound port is open too.

Thanks,
Chas.
by Charles L. Cotton
Wed Mar 18, 2020 2:29 pm
Forum: Technical Tips, Questions & Discussions (Computers & Internet)
Topic: Need help opening ports
Replies: 8
Views: 24093

Re: Need help opening ports

Well, the problem is solved, but this is interesting. If I run a port check from one of the many websites, the ports I opened in the Tenda router show to be blocked. However, when I run a "port check" in the software I need to use, the check shows all five ports to be "ok" meaning they are open. :headscratch

Thanks folks.
Chas.
by Charles L. Cotton
Wed Mar 18, 2020 12:14 pm
Forum: Technical Tips, Questions & Discussions (Computers & Internet)
Topic: Need help opening ports
Replies: 8
Views: 24093

Need help opening ports

I need to open five ports but I'm having trouble. I'm on Comcast/Xfinity using my own modem (Netgear CM700) and a Tenda AC15 (AC1900) router. I'm running Windows 10 and Norton Internet Security. I'm not sure if Windows Defender Firewall or Norton is causing the problem. I've tried the following to no avail:
  • 1. Added the ports (port forwarding) in the Tenda router;
    2. Opened the ports on Windows Defender Firewall
    3. Added a "rule" to Norton allowing traffic through the ports.
When this didn't work, I turned Norton off and tested again. The ports are still closed. This leads me to think Norton is not the problem.

I searched Norton and YouTube for a fix, but I've found nothing. Any suggestions?

It's my understanding that ports are opened or blocked by either the router, Windows, or Norton, or any combination, rather than the modem. Is this correct?

Thanks,
Chas.

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