Double NAT on Virgin Media routers / alternative to 'Modem Mode'

g67575

g67575

g67575

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There is a guide here, which explains how to run a Virgin Hub5X router alongside another router. Link:

Virgin Media Hub 5x Modem Mode workaround

A quick guide on how to work around the lack of modem mode on the Virgin Hub 5x, this guide makes some assumptions you will not be using the Hub for Wifi or any of the other ethernet ports Login 192.168.0.1 Configure the DMZ IP navigate to (Advanced Setting > Security > DMZ) and set the IP to...
d3v0ps.cloud

The Virgin router forwards all traffic to the 2nd router, without being affected by the Hub5X's firewall.

This is accomplished by enabling a DMZ, and pointing it towards the IP address of the 2nd router, which has it's own firewall.

Firewall options on the Virgin router can also be disabled. Presumably UPNP also.

Disabling WIFI and DHCP on the Hub seems like it would be a good idea.

I want a reliable network configuration, and the stories I've read about modem mode on Virgin's hub routers leave a lot to be desired. Running a 2nd router in the network, would allow more advanced features to be used, like SQM /bandwidth control for the WAN connection.

Questions:
  • Looking at the guide, it looks like there is probably no way to (easily) access the web interface of the Hub5X again (it recommends to only use the 10GBE port for the WAN IP, but no others). Is that correct?
  • Are there any strong reasons to avoid running a double NAT?
  • Would the IP address on the 2nd router have to be changed to meet the format: 192.168.0.x, in order to configure the DMZ?
 
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g67575 said:
There is a guide here, which explains how to run a Virgin Hub5X router alongside another router. Link:

Virgin Media Hub 5x Modem Mode workaround

A quick guide on how to work around the lack of modem mode on the Virgin Hub 5x, this guide makes some assumptions you will not be using the Hub for Wifi or any of the other ethernet ports Login 192.168.0.1 Configure the DMZ IP navigate to (Advanced Setting > Security > DMZ) and set the IP to...
d3v0ps.cloud

The Virgin router forwards all traffic to the 2nd router, without being affected by the Hub5X's firewall.

This is accomplished by enabling a DMZ, and pointing it towards the IP address of the 2nd router, which has it's own firewall.

Firewall options on the Virgin router can also be disabled. Presumably UPNP also.

Disabling WIFI and DHCP on the Hub seems like it would be a good idea.

I want a reliable network configuration, and the stories I've read about modem mode on Virgin's hub routers leave a lot to be desired. Running a 2nd router in the network, would allow more advanced features to be used, like SQM /bandwidth control for the WAN connection.

Questions:
  • Looking at the guide, it looks like there is probably no way to (easily) access the web interface of the Hub5X again (it recommends to only use the 10GBE port for the WAN IP, but no others). Is that correct?
  • Are there any strong reasons to avoid running a double NAT?
  • Would the IP address on the 2nd router have to be changed to meet the format: 192.168.0.x, in order to configure the DMZ?
Click to expand...
1. You can normally access the SH via a certain ip when in bridge mode. You may have to access it locally from the other port in this case.
2. Generally not recommended but if you have no choice…
3. Yes, the Hub needs to have a different ip and subnet completely. Then offers dhcp to your router on the wan interface. Then you are free to use your own subnet.

Silly how the Hub5x does support bridge mode.
 
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There’s also this:

fttppro.co.uk

Replacing the Hub 5x with a WAS-110 SFP+ Module on Virgin Media’s XGS PON broadband - FTTP Pro

In my previous blogs I have documented the journey to getting Virgin Media's XGS PON powered broadband installed and as you will see from reading them the inculded Hub 5x is limited in features and at the time of writing (21/7/24) does not have Modem Mode working properly which makes using your...
fttppro.co.uk fttppro.co.uk

Which ditches the 5x completely. But would need a router with a SFP+ port and no guarantee that’ll it’ll keep working.
 
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