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Plusnet hub zero ports 554 and 7070 permanently open WAN side !

Protech
Dabbler
Posts: 20
Thanks: 6
Registered: 26-09-2017

Plusnet hub zero ports 554 and 7070 permanently open WAN side !

A recent scan with fing from an external host shows ports 554 and 7070 open to the WAN.

Scan date: 19:44 22/12/2017
IP Address: xx.xx.xx
State: Online
Hostname: ****

Active services: 2
554/rtsp Real Time Stream Control Protocol
7070/realserver null

 

The router is configured with a fixed hostname via dyndns and there are no LAN hosts with services on those ports.

My questions are 

1 why is the router opening these ports ?

2 how to disable them from the hub zero ?

 

 

4 REPLIES
Community Gaffer
Community Gaffer
Posts: 13,098
Thanks: 895
Fixes: 74
Registered: 04-04-2007

Re: Plusnet hub zero ports 554 and 7070 permanently open WAN side !

Do you have any IP cameras on your network? Could be that they're using UPnP to open these ports.

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

Protech
Dabbler
Posts: 20
Thanks: 6
Registered: 26-09-2017

Re: Plusnet hub zero ports 554 and 7070 permanently open WAN side !

Hi bob

No ip cameras on the network , but there is a youview box , would that open these ports 😐

Community Gaffer
Community Gaffer
Posts: 13,098
Thanks: 895
Fixes: 74
Registered: 04-04-2007

Re: Plusnet hub zero ports 554 and 7070 permanently open WAN side !

They're not ports I recognise being related to Youview/multicast traffic.
FWIW, I can only see the following at your IP:-
Host is up (0.024s latency).
Not shown: 998 filtered ports
PORT STATE SERVICE
4567/tcp open tram
5222/tcp closed xmpp-client
The first of those is for our TR069 remote management.

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

Protech
Dabbler
Posts: 20
Thanks: 6
Registered: 26-09-2017

Re: Plusnet hub zero ports 554 and 7070 permanently open WAN side !

Hi Bob,
Thanks for checking this one out. It appears to be related to the use of dynamic DNS in some way. These ports are not showing as open when dynamic DNS is not being used.