Arris Cable Modem, Linksys Router, Linksys Switch, Synology Diskstation. Help!

[Tandar]

Hello,

I just moved into a new apartment. Had the cable set up the first day and have some really high quality network speeds with Brighthouse.

I received a Synology DS212j+ for Christmas last year, and had everything configured and setup to be able to use the server remotely and provide a DDNS URL for other users to access it.

After moving into this new apartment, I cannot seem to figure out how to configure my network to allow the ports to be forwarded and get my diskstation back online for outside users!

I am currently typing this out at work after having spent most of the Thanksgiving holidays messing with my network setup, and I've about given up. Decided to come here and give it a shot.

Currently here is how everything is setup (and currently have working internet connection and wireless accessibility):

Arris Modem/Gateway (I can't remember the model #, will update when return home)
This plugs into the Linksys WRT54GL router running dd-wrt firmware.
This then goes to a Linksys Gigabit switch
The switch is what everything is currently plugged into (in order to get Gigabit speeds within my LAN).

I currently have all the ports forwarded on the Linksys router and the ip is set to 192.168.1.101 (the diskstation IP). I've heard that changing the ports to 0.0.0.0 might work?

Also I've tinkered with switching off the DHCP and firewall settings for the Modem and that didn't work. Vice versa for the Linksys. This also caused the internet to drop out and no longer be accessible.

I would like for all the security and DHCP be handled by the Linksys if at all possible. Figure it is better equipped than the freebie Arris they provided.

Have attempted to set the Arris as a BRIDGE and remove DHCP and firewall and that knocked out the internet as well and did not solve my issue.

I am able to get into the Arris configuration page and can adjust settings.

The local IP of the Arris modem is 192.168.0.1
The local IP of the Linksys WRT54GL is 192.168.1.1

I'm guessing there is an issue with them both being on different ip segments, but I'm not exactly sure how to fix that?

If anyone can guide me or give me some more things to try I would be very appreciative. I have lost many hours of sleep over this and apologize for the windy explanation!!!

Thank you.

 

[das_stig]

Modem->router->switch->NAS

Modem should have everything disabled on it as you are using it as a gateway. (http://www.dslreports.com/faq/17174)
Router should everything enabled, DHCP, firewall UPNP etc etc and connected to modme via WAN port.
Switch should be connected to routers LAN port.
NAS via switch.

Once modem is a gateway, the ISP asigned address will go to the router and the network will get 192.168.1.x address.
For the NAS, I would give it a static IP.

So.

Modem IP : N/A
Router ISP IP : Anything but 169.x.x.x or 192.168.x.x or 10.x.x.x
Router LAN IP : 192.168.1.1
Routers DNS : ISP DNS servers, normally automatically picked up, but you can manually assign Google or OpenDNS etc
NAS Sttaic IP : 192.168.1.2
NAS Subnet : 255.255.255.0
NAS Gateway/DNS : 192.168.1.1
DHCP Pool : 192.168.1.10 to 192.168.1.x
Switch shouldn't need anythin, unless it is a fully managed version.

If DDNS is setup with whoever Linsys has partnered with and it is showing your IPS IP, you just need to forward ports to the NAS static IP, then hopefully you should be able to acces NAS from outside with myname.mydns.com😛ort number depending on nas setup, with access restricted by user accounts/passwords.

 

[Tandar]

Modem->router->switch->NAS

Modem should have everything disabled on it as you are using it as a gateway. (http://www.dslreports.com/faq/17174)
Router should everything enabled, DHCP, firewall UPNP etc etc and connected to modme via WAN port.
Switch should be connected to routers LAN port.
NAS via switch.

Once modem is a gateway, the ISP asigned address will go to the router and the network will get 192.168.1.x address.
For the NAS, I would give it a static IP.

So.

Modem IP : N/A
Router ISP IP : Anything but 169.x.x.x or 192.168.x.x or 10.x.x.x
Router LAN IP : 192.168.1.1
Routers DNS : ISP DNS servers, normally automatically picked up, but you can manually assign Google or OpenDNS etc
NAS Sttaic IP : 192.168.1.2
NAS Subnet : 255.255.255.0
NAS Gateway/DNS : 192.168.1.1
DHCP Pool : 192.168.1.10 to 192.168.1.x
Switch shouldn't need anythin, unless it is a fully managed version.

If DDNS is setup with whoever Linsys has partnered with and it is showing your IPS IP, you just need to forward ports to the NAS static IP, then hopefully you should be able to acces NAS from outside with myname.mydns.com😛ort number depending on nas setup, with access restricted by user accounts/passwords.

By disabling everything on the Modem what NAT mode would I set that to? I have 3 options. Or do I need to even bother?
RoutingwithNAT
BRIDGE
RoutingwithoutNAT

Inbetween turning all the settings off on the modem and picking up new IP's on the router would I need to power cycle the devices?

Thanks for the fast reply, I am excited to get home and try this solution. I feel as if I stumbled right over it several times in my sleepy haze!

 

[Tandar]

The solution would have worked perfectly, however the type of modem I had would not work when I switched off DHCP.

I ended up having to call the company and have them exchange their modem/router for just a plain old modem.

They are hooking me up with a very reliable motorola that should be good!

Thanks again