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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...
IF you got a new different router, the C7000 should be put in to modem only mode.
mtiede wrote:
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 equipment". And *I* can't update it.
So I bought a separate router (Synology RT6600ax) and I turned off the router portion of the C7000v2. Things are working, but I have some concerns. In particular (although I've been using this combination for several months now), I just got a "Threat Prevention" event detected Source IP 192.168.100.10 communicating to the Target IP 8.8.8.8 and saw signature "ET INFO DYNAMIC_DNS Query to a *.dyndns .org Domain ".
192.168.100.x is not my router's IP range. I can't ping 192.168.100.x from inside my lan. Where is this coming from? Has some sort of DMZ been set up? Is there something in the modem side of the C7000v2 that might be hacked? How could the router even seen something from 192.168.100.x if none of the vlans are using that range?
I don't even know how to communicate to the modem now without doing a factory reset.
Should I replace this modem? Any good suggestions for a new modem that would still let me continue to use the router?
As I explained above, yes, I put the C7000v2 in modem only mode. I'm trying to figure out what caused traffic from 192.168.100.10 that is not in the address range used by the router.
Also, if there some inherent weakness in using the C7000v2 modem (such as not being able to update the firmware), what standalone modem would be recommended and work with Spectrum.
mtiede wrote:
... what standalone modem would be recommended and work with Spectrum.
Ask Spectrum.
It is in the best position to know which modems work in its network.
Only IP address that would be accessible is 192.168.100.1 thats the modems IP address for accessing that side of the units web page and when in modem model as well. Nothing else would be coming from the modem in modem mode.
mtiede wrote:
As I explained above, yes, I put the C7000v2 in modem only mode. I'm trying to figure out what caused traffic from 192.168.100.10 that is not in the address range used by the router.
FURRYe38 wrote:
Only IP address that would be accessible is 192.168.100.1 thats the modems IP address for accessing that side of the units web page and when in modem model as well. Nothing else would be coming from the modem in modem mode.
That was my guess.
I didn't step in because I read the manual, which was misleading! (I suspect that mtiede did the same thing.) There I read:
"When your modem router is in bridge mode, use http://192.168.0.1 to
log in to your modem router."It is only by reading earlier messages here, that I knew that the manual can be misleading. And not for the first time.
That address is, of course, the IP address of the device in modem/router mode.
Manuals for some another cable modem/router does list "http://192.168.100.1".
