# Access Router behind the ONU

**URL:** <https://forum.genieacs.com/t/access-router-behind-the-onu/1450>\
**Category:** Uncategorized\
**Created:** [February 12, 2021, 12:30pm UTC](https://forum.genieacs.com/t/access-router-behind-the-onu/1450 "2021-02-12T12:30:56Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![rhuanyago](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.genieacs.com/rhuanyago/32/425_2.png) [@rhuanyago](https://forum.genieacs.com/u/rhuanyago)\
**Post date:** [February 12, 2021, 12:30pm UTC](https://forum.genieacs.com/t/access-router-behind-the-onu/1450/1 "2021-02-12T12:30:56Z")

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Is it possible to somehow manage to visualize a router that is behind a ONU?

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**Author:** ![akcoder](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.genieacs.com/akcoder/32/11_2.png) [@akcoder](https://forum.genieacs.com/u/akcoder)\
**Post date:** [February 12, 2021, 5:24pm UTC](https://forum.genieacs.com/t/access-router-behind-the-onu/1450/2 "2021-02-12T17:24:29Z")

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What are you trying to do?

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**Author:** ![rhuanyago](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.genieacs.com/rhuanyago/32/425_2.png) [@rhuanyago](https://forum.genieacs.com/u/rhuanyago)\
**Post date:** [February 12, 2021, 6:23pm UTC](https://forum.genieacs.com/t/access-router-behind-the-onu/1450/3 "2021-02-12T18:23:18Z")

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Our customers have ONU and behind use 1 or 2 routers, we wanted to access both the ONU and the router behind it. See information for both.

ONU AUTHENTICATED ON TR-069 → ROUTER CONNECTED TO LAN PORT

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<div class="post-metadata">

**Author:** ![akcoder](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.genieacs.com/akcoder/32/11_2.png) [@akcoder](https://forum.genieacs.com/u/akcoder)\
**Post date:** [February 12, 2021, 8:14pm UTC](https://forum.genieacs.com/t/access-router-behind-the-onu/1450/4 "2021-02-12T20:14:32Z")

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Look at using STUN. I believe its designed for what you are trying to do.

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<div class="post-metadata">

**Author:** ![rhuanyago](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.genieacs.com/rhuanyago/32/425_2.png) [@rhuanyago](https://forum.genieacs.com/u/rhuanyago)\
**Post date:** [February 12, 2021, 8:36pm UTC](https://forum.genieacs.com/t/access-router-behind-the-onu/1450/5 "2021-02-12T20:36:58Z")

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can you explain me a little more about? is my first contact and I can’t find much or understand about this STUN

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<div class="post-metadata">

**Author:** ![akcoder](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.genieacs.com/akcoder/32/11_2.png) [@akcoder](https://forum.genieacs.com/u/akcoder)\
**Post date:** [February 16, 2021, 4:37pm UTC](https://forum.genieacs.com/t/access-router-behind-the-onu/1450/6 "2021-02-16T16:37:04Z")

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I’ve never used STUN so I can’t really help you out there.

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**Author:** ![JonasGhost](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.genieacs.com/jonasghost/32/286_2.png) [@JonasGhost](https://forum.genieacs.com/u/JonasGhost)\
**Post date:** [February 19, 2021, 8:39am UTC](https://forum.genieacs.com/t/access-router-behind-the-onu/1450/7 "2021-02-19T08:39:54Z")

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Is the ONU a Bridge or does it use NAT?  
When it is in Bridge Mode there are no issues.  
I have a simular setup with an onu and Routers. The routers must not cascade, otherwise you need a stun service for NAT traversal.