Alternative to port 80?

jarvis82

jarvis82

jarvis82

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Wondering if anybody may be able to offer me some help.

I've a new Synology DS212J setup, and have just configured for remote access.

Unfortunately, my work's wired connection must be blocking port 5000 (although via my work's wireless connection is fine). So I can't access my Diskstation from my work desktop.

I worked round it today, but setting my home router (BT Homehub 3) to accept port 80, but translate to port 5000. This solved the problem of no access from my work desktop, but it took port 80 out of action, which is the port for the Synology 'Photostation' application - which I also want to use.

I tried using some other port numbers to translate to 5000 (79 & 81, plus some others), and whilst all these were visible at canyouseem.org, they didn't work as port 80 did, and I couldn't remote access my Diskstation from anywhere ('page could not be displayed' errors).

So, wondering if anyone can offer any advice?

Many thanks!
 
Try some common ports for common protocols and see if they get through.

As said 8080 can be a popular one, 443 is another but you could have something running on that port already it might break.
 
Shad said:
8080 is often open on corporate firewalls, you could try that if you haven't already.
Click to expand...

Ev0 said:
Try some common ports for common protocols and see if they get through.

As said 8080 can be a popular one, 443 is another but you could have something running on that port already it might break.
Click to expand...

Thanks for your replies, most appreciated.

Unfortunately 8080 must be blocked by BT, as couldn't see that despite opening it on my router!

However, even if it wasn't blocked, for whatever reason port 80 is the only one that will work when translating to port 5000 - i.e. if I set port 80 to translate to 5000 on my router, then try and access my domain name (myname.co.uk), it goes straight to the Diskstation Manager login page as it should. If I set any other number (one which is visible at canyouseem.org), then access my domain name, I just get a page cannot be displayed error. Its as if it knows to try and go for port 80 (if set to translate to 5000), but any other number it doesn't. Odd?? Any ideas why this could be?
 
If you access using a web browser then by default it'll always try port 80 for http, or 443 for https.

To access another port from the browser type in yourdomain.co.uk:<portnumber>

so if you used port number 8080 you'd type yourdomain.co.uk:8080

The browser then knows to look for the page on that port rather than the default http port of 80, which you will then have redirected to 5000.
 
As Ev0 says - you need to tell your browser to use the newly configured port, otherwise it will still be attemping on port 80. So in this case, regardless of what you set on the remote end, it will still hit your device on port 80.

Also, BT won't be blocking 8080, nor any other port really. If they really get their arms twisted with lawsuits you may find 'dodgy' traffic doesn't work but they won't be blocking a very commonly used web port.

Just my 2 cents :)
 
Has your work connection actually got a transparent proxy/filter on it? ... hence it doesn't matter if you try going to http://address: port because traffic on that port wont be allowed out of the network to the internet.

Only port 80/443 will work as those ports have been setup to work through the proxy/firewall ... hence setting you router to redirect from port 80 to port 5000 will work as the connection out of the work network will be on port 80 but as you have found the internal link will be pointing at port 5000 still and hence will not work.

Not sure how you would get around it though.
 
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