Uverse ports 21131 and 21130

[SheilaTea]

Are ports 21130 and 21131 reserved for special use by UVerse?

I am trying to connect via internet (outside my home) to my new OTA DVR tablo. I was instructed to forward port 21131 to port 8887 and 21130 to port 80.

I connected to my UVerse router, went to Applications, Pinholes, and DMZ and added a custom setting to map the ports (see below). However, when I go to portchecktool, it cannot reach the port.

Can anyone offer advice?

thanks

            Device Allowed Applications Application Type Protocol Port Number(s) Public IP

unknown5087B8009D6D	Tablo	-	tcp	21131	Deleted
			tcp	21130	by
			udp	21131	me
			udp	21130	on this page

[ApexRon]

Okay, I am looking at Access Tablo From Internet and it says port 31881 to port 8887 and port 31882 to port 80.

At any rate, using my ports here is how I would configure my router:

Port (From) 8887

Map to Host Port 31881

Port (From) 80
Map to Host Port 31882

To add to the confusion I cannot find a listing for ports 2113x or 3188x. 

[Anonymous]

I can tell you that I have ports open on my firewall for my work IP phone.  4 to be exact.  Using a port forward checker it shows them closed.  I know they are not because my IP phone works.  I wouldn't rely on that tool.

I know there is a setting on the Uverse gateways that will block inbound pings.  On mine it is this page: http://192.168.1.254/xslt?PAGE=login_post.  I have an 5268AC and my block ping is ticked and also "stealth mode".  

[SheilaTea]

ApexRon,

I also saw the comment about the ports you mentioned. My tablo came up with the ones I used. However, I also tried the ones you listed, but did not include them.

However, I wonder if I did the mapping backwards? Since I only have a (very) vague understanding of what I am doing.... I think I mapped:

Port (From) 31881

Map to Host Port 8887

I will try it the other way .....

[SheilaTea]

I edited my settings to map as below, and used the configuration tool on my tablo app to use 31881 and 31882 instead of 21131 and 21130. I mapped the opposite way I originally did and it still did not work.

To be clear, I am putting these maps to the tablo itself. Do I need to map anything on the gateway? Also, do I need to tell an application or application type? (I am setting this up as a new, user defined app).

Port (From) 8887

Map to Host Port 31881

Port (From) 80
Map to Host Port 31882

Thanks for the assistance!

[ApexRon]

The gateway is where you need to be adding maping in the firewall section.

As far as mapping in the Tablo, I cannot speak to that.