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Forums > CI World > Custom Installers' Lounge
Comcast Business Gateway Router with 2nd...
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Topic:
Comcast Business Gateway Router with 2nd Router
This thread has 25 replies. Displaying posts 1 through 15.
Post 1 made on Saturday February 27, 2016 at 16:56
AnilAppleLink
Long Time Member
Joined:
Posts:		February 2012
236
I have a customer with a comcast business router, the SMC Gateway like shown in the picture in the link.


They have there own cisco router that they only have plugged into the comast router and then that router gives out DHCP to the network. They DO NOT have a static IP.

The comcast router is on network 10.1.10.1 subnet 255.255.255.0
The cisco router is on network 192.168.1.1 subnet 255.255.255.0 with other VLan networks and its WAN is 10.1.10.11 connected to the Comcast Business Router.

They have a camera system hooked up to it and they would now like to see the cameras from a remote location so I went into the cisco router and forwarded the ports and then I went into the comcast router and set the DMZ to 10.1.10.11. I also forwarded the port to 10.1.10.11 in the comcast router.

But for some reason I still cannot view the cameras. I went to canyouseeme.org and it says the ports that I forwarded are closed.

What is the best way I can get this to work? Should I bridge the Comcast router?

Thanks

Last edited by AnilAppleLink on March 4, 2016 06:19.
--
Thanks,
Anil A. Apple Communication LLC. www.apple-link.com Pro-AV - Pro Lighting - Networking - Security Cameras - Home Theater For all your low voltage cabling needs
Reply
Post 2 made on Saturday February 27, 2016 at 17:11
buzz
Super Member
Joined:
Posts:		May 2003
4,384
Yes, Bridge the Comcast.
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Post 3 made on Sunday February 28, 2016 at 07:51
pesci
Senior Member
Joined:
Posts:		August 2006
1,212
get rid of that comcast router!!!! or try NAT. those routers suck
[email protected]
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Post 4 made on Sunday February 28, 2016 at 07:52
pesci
Senior Member
Joined:
Posts:		August 2006
1,212
also did u try other ports? u need to forward multiple ports-mobile, web etc in both UDP and TCP
[email protected]
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Post 5 made on Sunday February 28, 2016 at 08:33
Mario
Loyal Member
Joined:
Posts:		November 2006
5,681
You can't double NAT -- it will f*ck things up.

You have 3 choices:
1. Bridge Crapcast gateway
2. Replace Crapcast gateway
3. VPN (but I doubt that you can successfully do that with what you now have)
Mario P.
www.hthnm.com
Reply
Post 6 made on Sunday February 28, 2016 at 18:30
ichbinbose
Select Member
Joined:
Posts:		August 2011
1,824
On February 28, 2016 at 07:51, pesci said...
get rid of that comcast router!!!! or try NAT. those routers suck

This.
Put in a modem and real router
Reply
OP | Post 7 made on Wednesday March 2, 2016 at 19:24
AnilAppleLink
Long Time Member
Joined:
Posts:		February 2012
236
On February 28, 2016 at 08:33, Mario said...
You can't double NAT -- it will f*ck things up.

You have 3 choices:
1. Bridge Crapcast gateway
2. Replace Crapcast gateway
3. VPN (but I doubt that you can successfully do that with what you now have)

If I replace the crapcast router what can I replace it with?

They definitely want to keep their Cisco RV320 Router that contains all of their VLAN structure and other stuff.
--
Thanks,
Anil A. Apple Communication LLC. www.apple-link.com Pro-AV - Pro Lighting - Networking - Security Cameras - Home Theater For all your low voltage cabling needs
Reply
Post 8 made on Wednesday March 2, 2016 at 21:08
edizzle
Loyal Member
Joined:
Posts:		March 2005
5,916
Bridge the Comcast modem/router. It turns it into a a dumb modem only. If they are renting/paying for the modem then replace it with a Motorola/arris surfboard modem
I love supporting product that supports me!
Reply
OP | Post 9 made on Wednesday March 2, 2016 at 21:15
AnilAppleLink
Long Time Member
Joined:
Posts:		February 2012
236
On March 2, 2016 at 21:08, edizzle said...
Bridge the Comcast modem/router. It turns it into a a dumb modem only. If they are renting/paying for the modem then replace it with a Motorola/arris surfboard modem

Is there any benefit to replacing it with a motorola modem versus bridging? Such as increase in speed or network reliability?
--
Thanks,
Anil A. Apple Communication LLC. www.apple-link.com Pro-AV - Pro Lighting - Networking - Security Cameras - Home Theater For all your low voltage cabling needs
Reply
Post 10 made on Wednesday March 2, 2016 at 21:18
tweeterguy
Loyal Member
Joined:
Posts:		June 2005
7,713
On March 2, 2016 at 21:15, AnilAppleLink said...
Is there any benefit to replacing it with a motorola modem versus bridging? Such as increase in speed or network reliability?

Yes; anytime the modem is reset or a firmware update is pushed by the ISP it may revert back to its original configuration of being a modem and router -> Service call.
Reply
Post 11 made on Thursday March 3, 2016 at 08:40
1234tech
Long Time Member
Joined:
Posts:		January 2007
140
get the latest Netgear modem - crazy fast (if your ISP supports those speeds).
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Post 12 made on Thursday March 3, 2016 at 09:44
tweeterguy
Loyal Member
Joined:
Posts:		June 2005
7,713
On March 3, 2016 at 08:40, 1234tech said...
get the latest Netgear modem - crazy fast (if your ISP supports those speeds).

Model number and/or link to ISP compatibility list?
Reply
Post 13 made on Thursday March 3, 2016 at 10:00
Mario
Loyal Member
Joined:
Posts:		November 2006
5,681
The only reason to keep the Crapcast gateway is if you need POTS
Mario P.
www.hthnm.com
Reply
Post 14 made on Thursday March 3, 2016 at 10:16
drewski300
Super Member
Joined:
Posts:		January 2007
3,849
You may want to look into whether or not they have an incoming static address. You will not be able to bridge if that's the case....

We have the exact same setup but ours is passing any open ports we need including camera's and automation. We also have DMZ setup and set to address you listed above. We also have firewall rules turned off on the modem. Not sure what's going on...
"Just when I thought you couldn't possibly be any dumber, you go and do something like this... and totally redeem yourself!"
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OP | Post 15 made on Friday March 4, 2016 at 06:14
AnilAppleLink
Long Time Member
Joined:
Posts:		February 2012
236
On March 3, 2016 at 10:00, Mario said...
The only reason to keep the Crapcast gateway is if you need POTS

That Crapcast gateway does not have POTS
--
Thanks,
Anil A. Apple Communication LLC. www.apple-link.com Pro-AV - Pro Lighting - Networking - Security Cameras - Home Theater For all your low voltage cabling needs
Reply
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