Plusnet Firewall issue
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Re: Plusnet Firewall issue
24-11-2021 11:20 AM
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other ports such as 50000 would be blocked too
The short answer is no they wouldn't
When a application establishes a remote connection it uses an random port between 49152 to 65535 to contact the port the application is listening to, for a web browser http is 80 and https is 443, example of my pc with https connection
TCP 192.168.1.106:58908 34.120.67.236:443 ESTABLISHED
So the link established between the two hosts is port 58908 on my LAN connection to port 443 at the remote end, this connection is maintained until the application closes it. So in the above example the INBOUND connection to my network is on port 58908. This is how TCP/IP works.
Where all this can go wrong is when Modem/Router like a Hub One is connected to a second router and double NAT comes to play, not the end of the world but adds a level of confusion. Second Router could have be added to improve wifi coverage, for this the second router should be setup as a Wireless Access Point.
TCP/IP is a multi layered subject.
Dan
Re: Plusnet Firewall issue
24-11-2021 11:25 AM
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Re: Plusnet Firewall issue
24-11-2021 11:51 AM
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GRC Port Authority Report created on UTC: 2021-11-24 at 11:37:48 Results from scan of ports: 0, 21-23, 25, 79, 80, 110, 113, 119, 135, 139, 143, 389, 443, 445, 1002, 1024-1030, 1720, 5000 0 Ports Open 0 Ports Closed 26 Ports Stealth --------------------- 26 Ports Tested ALL PORTS tested were found to be: STEALTH. TruStealth: PASSED - ALL tested ports were STEALTH, - NO unsolicited packets were received, - NO Ping reply (ICMP Echo) was received.
If I initiate a new outgoing connection to BBC. I am able to get BBC iPlayer without any problems because current setting allow ESTABLISHED and RELATED connections.
But NEW in coming connections are drop.
Previously when plusnet broadband firewall was working. Shieldsup would show https and http as open.
Re: Plusnet Firewall issue
24-11-2021 11:54 AM
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Would be grateful if you could test changing and saving your plusnet firewall settings. Mine just comes up with error message.
Re: Plusnet Firewall issue
24-11-2021 11:57 AM
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Wouldn't they only show as open if there was something listening on those ports? Do you have anything? I don't know what router you are using (sorry if you've stated it higher up), but if it's the Hub One then I'm pretty sure it doesn't allow remote management so doesn't listen on those ports itself. The only way they would be open with it is if you port forwarded them to something that was listening.
Superusers are not staff, but they do have a direct line of communication into the business in order to raise issues, concerns and feedback from the community.
Re: Plusnet Firewall issue
24-11-2021 12:37 PM
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On my plusnet hub one router port 80 is forwarded to ip address port 1953. Shieldsup still show port 80 as Stealth
Re: Plusnet Firewall issue
24-11-2021 12:44 PM
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If the Plus Net firewall is off then it can only be your modem/router firewall blocking the traffic unless it (Plus Net firewall) is not working as intended. My understanding is the Plus Net firewall does not negate the Modem/Router firewall settings.
As @pjmarsh said unless something is listening to the required port it will not show the port is open, as I previously stated. I don't think shields up tests UDP connections.
I would avoid using common ports for any connection unless absolutely necessary, like a web server.
Perhaps setting to HIGH does stop an inbound VPN connection on all port, I can't say I've never tried it. What ever you may need to setup a port forward rule for any inbound connection to a VPN Server.
Not sure I can add anymore.
Dan.
Re: Plusnet Firewall issue
24-11-2021 12:56 PM
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Here is my plusnet hub one screenshot.
Re: Plusnet Firewall issue
24-11-2021 1:41 PM
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For clarity
Plus Net Firewall = Broadband Firewall accessed via the members centre.
Modem/Router = Hub One or 3rd Party device.
My Hub One firewall setting matches yours.
If I understand correctly
Broadband Firewall setting is OFF then it will be the Hub One firewall only blocking traffic.
LOW the Hub One Firewall still blocks traffic, but no longer needs to block 53, 111, 135, 137, 138, 139, 445, 515, 1080, 1433, 3128, 3306, 6000 as these never reach your Hub One as they are already blocked by the Broadband Firewall.
HIGH not recommended setting for VPN services.
Stepping back, are you trying to connect to a VPN Server using a VPN Client or connecting to a local VPN Server hosted on your home network from somewhere outside?
Re: Plusnet Firewall issue
24-11-2021 1:47 PM
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Re: Plusnet Firewall issue
24-11-2021 1:55 PM
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I am trying to connect to a local VPN Server hosted on my home network from somewhere outside. I had this setup for 3-4 years worked without any problems until I am unable to switch plusnet broadband firewall to block common ports except http and https.
Re: Plusnet Firewall issue
24-11-2021 1:59 PM
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Thanks. Perhaps we should ask Plusnet to solve this problem asap. I suppose we just have to wait. They took one whole week to fix the webmail problem recently.
Re: Plusnet Firewall issue
28-11-2021 9:37 AM
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*Please* can you give as an idea of when this might be fixed.
Re: Plusnet Firewall issue
28-11-2021 12:30 PM
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Re: Plusnet Firewall issue
30-11-2021 10:47 AM
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Thanks for reminding plusnet to sort the firewall issue. I am still waiting to use my home vpn. I noted past issues with plusnet firewall in 2018 highlighted on the forum. Plusnet please get cracking!
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