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Forum Discussion
Should I be worried about my C7000v2 modem/router?
I wanted to have Spectrum update the modem/router. (I think previously Time Warner did at least one update) But now Spectrum (who acquired Time Warner) just says, "We don't update customer equip...
mtiede wrote:
... I turned off the router portion of the C7000v2.
How did you go about that?
Manuals are always a good place to start.
Visit the support pages:
Support | NETGEAR
Feed in your model number and check the documentation for your hardware.
Check the section in the manual Connect Your Modem Router to a Router After Installation and Activation
You may have done that already. I can't tell from your message.
That will also explain how you can access the C7000v2 when you have put it into modem only mode. But there isnlt much that you can do in that mode. You can't control anything useful – that's down to your router – and you certainly can't update the firmware.
In that mode, your router is in charge of your network and should be the defender of your security in the Internet. As a modem, the C7000v2 won't play the key role.
Whether or not this is good enough is down to your level of paranoia. Most owners of cable modems seem to survive. They can't control their firmware either. Only ISPs can do that.
How did you go about that?
I downloaded the documentation PDF when I first got the C7000v2 as I do with all my devices.
per the documentation:
Select ADVANCED > Administration > Router Mode.
The Router Mode page displays.
Select the No radio button.
With this setting, the modem router works as a bridge and the router behind it obtains a
WAN IP address from the Internet service provider
Manuals are always a good place to start.
Yes, that is where I started. FWIW, I've been doing computer stuff since 1966.
Visit the support pages:
Support | NETGEAR
Feed in your model number and check the documentation for your hardware.
Check the section in the manual Connect Your Modem Router to a Router After Installation and Activation
You may have done that already. I can't tell from your message.
As I believe I said, my router was already working with the C7000v2.
That will also explain how you can access the C7000v2 when you have put it into modem only mode. But there isnlt much that you can do in that mode. You can't control anything useful – that's down to your router – and you certainly can't update the firmware.
As I understand it, I can NEVER update the firmware on this device. By the nature of the C7000v2 that can only be updated by the ISP (who has specifically said they will NEVER do that either. Thanks Spectrum)
In that mode, your router is in charge of your network and should be the defender of your security in the Internet. As a modem, the C7000v2 won't play the key role.
I know, and yet the 192.168.100.10 is referenced in an event and my Synology router has no VLANs in that range. It also introduced a GUEST network that used the 192.168.0.x addresses and so I would be unable to access the C7000v2 via 192.168.0.1. So I am just guessing that the C7000v2 may have introduced some sort of DMZ with that address. Or something nefarious is going on.
Whether or not this is good enough is down to your level of paranoia. Most owners of cable modems seem to survive. They can't control their firmware either. Only ISPs can do that.
My ISP will not do that.
Yes, that is the place that started this whole adventure. I saw that my C7000v2 was several versions behind. And I couldn't update it and the ISP won't update it.
Got any other ideas about the origin of a 192.168.110.10 address?
mtiede wrote:
Got any other ideas about the origin of a 192.168.110.10 address?
What does that mean? The origin of that address is the modem.
You want to access it? (Why?) Disconnect everything from the modem, connect it to a PC and aim the browser at that address.
By origin I mean what device could possible be using that IP? Why would there be a device with that IP trying to access the DNS server?
Why is the modem doing anything with IPs now? Shouldn't it just be bridging to my router and the ROUTER assigns IPs to devices? My router has no vlan that is 192.168.100.x. So it should not be assigning that IP to any device. And yet there was traffic that generated a "Threat Prevention" event and caught by the router.
I don't want to access it. I want to know why it exists.
The only thing connected to the modem is the router. And a pc connected to my router can not access 192.168.100.x. That network does not exist for the router.
If the modem is only being used as a bridge, is it getting dns information? Why?