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MikeSK

Netgear Nighthawk CM1100 DOCSIS 3.1 Cable Modem

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Posted · Original PosterOP

The online documentation I have found for the "Netgear Nighthawk CM1100 DOCSIS 3.1 Cable Modem" has been very limited in detail. 

I intend to install a Wifi router behind this Cable Modem.

Question:

  • Does the "Netgear Nighthawk CM1100 DOCSIS 3.1 Cable Modem" allow for setting up DMZ, port forwarding and or pass through?

 

 

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It's a pure cable modem, it has almost no functionality and will just pass through the public IP to your router behind it. You'll need a proper router to setup a DMZ, port forwarding, etc. behind the modem.


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All the modem does is interpret incoming signals on the cable. You would need routers and other equipment to setup a DMZ


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HP DC7900 - Core 2 Duo E8400, 4GB DDR2, Radeon HD 5350 (Windows Vista)

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Posted · Original PosterOP

Thanks, the instructions mentioned signing in to the modem and setting up features.  It has two ports on the back that can be used to increase it's ethernet bandwidth which I inferred may mean it had a partial router/limited firewall functionality.  I will get a Wireless Router before I intend to start using this in place of the Xfinity rented modem. 
 

Any wireless router recommendations?

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1 minute ago, MikeSK said:

It has two ports on the back that can be used to increase it's ethernet bandwidth

I've never seen that before, wtf.

1 minute ago, MikeSK said:

which I inferred may mean it had a partial router/limited firewall functionality.

"used to increase it's ethernet bandwidth" doesn't sound like "router/limited firewall" features to me, lmao.

 

You'll need other equipment to make a DMZ. I think you need two routers, but I may be wrong.


Primary PC: Lazarus https://pcpartpicker.com/list/Pf6fBb (Windows 10 Home)

HTPC: *name pending*https://pcpartpicker.com/list/bz62P3 (Windows 10 Home)
Server: Dell Precision T7500 - Dual Xeon X5660's, 44GB ECC DDR3, Radeon HD 6350 (Windows 10 Pro)
Oher PCs:          

*name pending* - i7-920, MSI-X58 Platinum SLI, 12GB DDR3, EVGA GTX 260 + EVGA GTX 260 Core 216 in SLI - https://pcpartpicker.com/list/Nknj6s (Windows 7 Pro)

HP DC7900 - Core 2 Duo E8400, 4GB DDR2, Radeon HD 5350 (Windows Vista)

Compaq Presario 5000 - Pentium 4 1.7Ghz, 1GB DDR, Nvidia GeForce 2 MX400 (Windows XP)
Compaq Presario 8772 - Pentium MMX 200Mhz, 48MB PC66, 6GB Quantum HDD, "8GB" HP SATA SSD adapted to IDE (Windows 98 SE)

In progress project PCs:

*name pending* - Pentium G4400, 8GB DDR3, Asus H110

*name pending* - AMD A4-6300, 8GB DDR3

*name and purpose pending* - AMD Ryzen 5 2400G

*name and purpose pending* - Asus Strix 1070

 

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3 minutes ago, MikeSK said:

Any wireless router recommendations?

I have the Asus AC66U, which I believe has support for DMZ stuff. 


Primary PC: Lazarus https://pcpartpicker.com/list/Pf6fBb (Windows 10 Home)

HTPC: *name pending*https://pcpartpicker.com/list/bz62P3 (Windows 10 Home)
Server: Dell Precision T7500 - Dual Xeon X5660's, 44GB ECC DDR3, Radeon HD 6350 (Windows 10 Pro)
Oher PCs:          

*name pending* - i7-920, MSI-X58 Platinum SLI, 12GB DDR3, EVGA GTX 260 + EVGA GTX 260 Core 216 in SLI - https://pcpartpicker.com/list/Nknj6s (Windows 7 Pro)

HP DC7900 - Core 2 Duo E8400, 4GB DDR2, Radeon HD 5350 (Windows Vista)

Compaq Presario 5000 - Pentium 4 1.7Ghz, 1GB DDR, Nvidia GeForce 2 MX400 (Windows XP)
Compaq Presario 8772 - Pentium MMX 200Mhz, 48MB PC66, 6GB Quantum HDD, "8GB" HP SATA SSD adapted to IDE (Windows 98 SE)

In progress project PCs:

*name pending* - Pentium G4400, 8GB DDR3, Asus H110

*name pending* - AMD A4-6300, 8GB DDR3

*name and purpose pending* - AMD Ryzen 5 2400G

*name and purpose pending* - Asus Strix 1070

 

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22 minutes ago, Eastman51 said:

I've never seen that before, wtf.

"used to increase it's ethernet bandwidth" doesn't sound like "router/limited firewall" features to me, lmao.

 

You'll need other equipment to make a DMZ. I think you need two routers, but I may be wrong.

DOCSIS 3.1 can do well over gigabit speeds so it's there for if you have a 1.5Gbit or 2Gbit plan :)

You would need a router that could have dual WAN interfaces at least.


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1 hour ago, MikeSK said:

Thanks, the instructions mentioned signing in to the modem and setting up features.  It has two ports on the back that can be used to increase it's ethernet bandwidth which I inferred may mean it had a partial router/limited firewall functionality. 

Its so the modem "Might" support faster speeds in the future. But currently that feature is not used as there are not speeds over 1 Gbps on Coax currently. The Docsis 3.1 spec maxes out at 10 Gbps down 2Gbps up. The Full duplex Docsis 3.1 standard they are working on now should be able to provide symmetrical 10 Gbps speeds. Of course this is all theoretical. I doubt the cable network will ever be able to achieve those speeds. 

 

1 hour ago, MikeSK said:

Any wireless router recommendations?

I have the Synology RT2600 AC, it works well. Great range and speed, but for $200 USD it better have that. Its also nice that It keeps track of my monthly bandwidth usage. This way I can make sure Comcast is not trying to fuck me over on the cap and overages. While I dont use the feature, this router also allows you do limit bandwidth to select devices and make sure certain devices always have bandwidth available. 


You ever notice that many establishments have a sign that as "No Shirt, No Shoes, No service"? They never say anything about pants............ You know what that implies. You dont have to wear pants. 

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