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Not able to forward ports 80 and 443 on Plusnet Sagemcom 2704N router

mdskinner
Newbie
Posts: 6
Registered: 15-02-2015

Not able to forward ports 80 and 443 on Plusnet Sagemcom 2704N router

I have a Synology NAS which I need to access remotely and so I have successfully forwarded a number of ports in the PlusNet router to the NAS drive to enable this, however the router is not letting me add forwarding rules for ports 80 and 443 (both TCP) which Synology have advised me I also need to forward to enable my remote access to the NAS when away from my home LAN.
The error I get is as follows:
"Sorry!
You're not allowed to access this content."
I would be very grateful if someone could explain what I need to do to rectify this error (other than buying a new router).
I have the Firewall of the router set to 'off' and also in the PlusNet member centre I have the Firewall set to 'off', so nothing should be blocking the router from forwarding those two ports.  This seems to be router specific to those two ports, as I have a number of other ports forwarding successfully, and I was previously able to forward these ports when I was with Sky using their modem.
I have tried PlusNet Support (Chat) but they are refusing to support me at all as this is an "advanced feature" of the modem. They should have made it clear to us before we signed up that they would not provide support for their own equipment and I have a separate complaint in with them about that aspect.
13 REPLIES
Community Veteran
Posts: 3,380
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Registered: 18-01-2013

Re: Not able to forward ports 80 and 443 on Plusnet Sagemcom 2704N router

Have you specifically gone in to the Game and Application sharing (or whatever it is called these days) and assigned the appropriate port or application to your device ?
I.e. http -> yourdevice
*edit - more instructions here : http://www.plus.net/support/broadband/hardware/plusnet-2704n-faqs.shtml#advanced
Community Gaffer
Community Gaffer
Posts: 13,284
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Re: Not able to forward ports 80 and 443 on Plusnet Sagemcom 2704N router

I suspect there's a preconfigured application that's already using those ports. Look for something like 'web server' in the preconfigured list of apps and try forwarding that to the NAS.

Bob Pullen
Plusnet Product Team
If I've been helpful then please give thanks ⤵

mdskinner
Newbie
Posts: 6
Registered: 15-02-2015

Re: Not able to forward ports 80 and 443 on Plusnet Sagemcom 2704N router

Quote from: DomS
Have you specifically gone in to the Game and Application sharing (or whatever it is called these days) and assigned the appropriate port or application to your device ?
I.e. http -> yourdevice
*edit - more instructions here : http://www.plus.net/support/broadband/hardware/plusnet-2704n-faqs.shtml#advanced

Hi DomS, thanks for your reply.  Yep I've got a number of port forwards setup in the Game & Application Sharing type page (just called Port Forwarding on this particular router), list below:
Game / Application                      Device
Data Replicator                            DISKSTATION (00:11:32:3c:1f:bd) 
Network Backup                          DISKSTATION (00:11:32:3c:1f:bd) 
Synology Assistant                      DISKSTATION (00:11:32:3c:1f:bd) 
Audio Station                                DISKSTATION (00:11:32:3c:1f:bd) 
Video Station                                DISKSTATION (00:11:32:3c:1f:bd) 
DS Media Server                          DISKSTATION (00:11:32:3c:1f:bd) 
NFS                                              DISKSTATION (00:11:32:3c:1f:bd) 
iTunes Server                              DISKSTATION (00:11:32:3c:1f:bd)   
DSM                                            DISKSTATION (00:11:32:3c:1f:bd) 
DS Cloud                                      DISKSTATION (00:11:32:3c:1f:bd) 
These cover a range of ports, but the router won't let me define a Game/App for ports 80 and 443.
Community Veteran
Posts: 3,380
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Registered: 18-01-2013

Re: Not able to forward ports 80 and 443 on Plusnet Sagemcom 2704N router

Double check what Bob has written a couple of posts up - it may be there are already defined applications for those ports (80 and 443) and it won't let you duplicate them so you'd need to use the pre-defined ones.
mdskinner
Newbie
Posts: 6
Registered: 15-02-2015

Re: Not able to forward ports 80 and 443 on Plusnet Sagemcom 2704N router

Quote from: Bob
I suspect there's a preconfigured application that's already using those ports. Look for something like 'web server' in the preconfigured list of apps and try forwarding that to the NAS.

Ah yes, thanks!
I just tried "Secure Web Server (HTTPS)" and "Web Server (HTTP)" and pointed these to my DiskStation.  First one is port 443 and second one is port 80.  So looks like I was trying to create a port rule that already existed.  Would be nice if the modem could make that clear rather than giving the ambiguous error message it does give.
Anyway, thanks for helping me.  I'll try and access my NAS externally now.
Superuser
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Re: Not able to forward ports 80 and 443 on Plusnet Sagemcom 2704N router

Suggest that you identify alternate ports to use on the external interface and forward these to your NAS.
alt1 -> yourdevice:80
alt2 -> yourdevice:443
You should then be able to access the services using
http://username.plus.com:alt1
and
https://username.plus.com:alt2

I've used this to access multiple web services within my local network.
mdskinner
Newbie
Posts: 6
Registered: 15-02-2015

Re: Not able to forward ports 80 and 443 on Plusnet Sagemcom 2704N router

Quote from: DomS
Double check what Bob has written a couple of posts up - it may be there are already defined applications for those ports (80 and 443) and it won't let you duplicate them so you'd need to use the pre-defined ones.

Yep indeed that was the issue - the error message given by the router didn't make this clear - but yes they were already defined in the end so have pointed them to my NAS.
Thanks all - wasn't expecting responses so quickly!
Community Veteran
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Registered: 18-01-2013

Re: Not able to forward ports 80 and 443 on Plusnet Sagemcom 2704N router

We're on the ball on this forum Wink
As Townman said above - consider "non standard" ports as an alternative anyway. Any potential hackers out there quite often target standard ports so be moving them around i.e. your.ip.address:12388 -> your.internal.device:80 will make things slightly more secure from the script kiddies out there.
mdskinner
Newbie
Posts: 6
Registered: 15-02-2015

Re: Not able to forward ports 80 and 443 on Plusnet Sagemcom 2704N router

Ok, so looks like port 80 is open now, but port 443 is still showing as closed (see below).  I've added both in the Advanced settings of the router so any idea why port 443 is closed?  Is there something else I need to do?
I used the following website to check my ports:
http://www.yougetsignal.com/tools/open-ports/
Superuser
Superuser
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Re: Not able to forward ports 80 and 443 on Plusnet Sagemcom 2704N router

Is there a listener running on port 443 of your NAS?
Is there a firewall within your network (on the NAS) which is blocking access to port 443?
Can you access port 443 on the NAS from within your network?
mdskinner
Newbie
Posts: 6
Registered: 15-02-2015

Re: Not able to forward ports 80 and 443 on Plusnet Sagemcom 2704N router

Thanks Townman, I'm not sure how to check some of the things below, so I have commented by each one
Quote from: Townman
Is there a listener running on port 443 of your NAS? - what is a listener?  Not sure how I would check this
Is there a firewall within your network (on the NAS) which is blocking access to port 443?  Both the PlusNet Firewall in member centre and the Router firewall are set to "off".  The firewall in the NAS is set to allow all relevant ports, including 80 and 443.
Can you access port 443 on the NAS from within your network?  Sorry - again I do not know how I would check if I can access port 443 on the NAS from within my network.  IS this something I can type into Internet Explorer?

Superuser
Superuser
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Re: Not able to forward ports 80 and 443 on Plusnet Sagemcom 2704N router

Port 443 is used for https connections.
Having forwarded the port from the router to your NAS, the NAS must have the port "open" (have a "listener" connected to it) for the port to appear open to the outside world.
So the first test is can you access the NAS using https from within your local network?
If you do not know how to do this and can administer everything you need on http using port 80, then you most likely do not have a problem which you need to fix.
Community Veteran
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Re: Not able to forward ports 80 and 443 on Plusnet Sagemcom 2704N router

As far as I can tell, Bob's comment (reply #2) seems to be the most relevant in this discussion, but as I'm not an expert on this area perhaps someone who is an expert could comment and offer some further advise.