[richardm]

Hello

I was wondering if anyone had experience with this type of setup. I searched the forum, but couldn't quite find the answer I was looking for.

My sister has a Paradyne 6211-I3 provided by TSTT. She also has a Linksys WRT54G router which we will like to use to handle all NAT and Firewall functionality (Not the Paradyne).

We would like Paradyne to act like a dumb bridge and I am thinking at minimum I need to make the following changes to the Paradyne modem settings, especially changing the connection type as shown below.

VCL = "35"
Service Category = "UBR without PCR"
Connection Type = "Bridging"
Encapsulation Mode = "LC/Snap Bridging"

Does anyone have experience with this? Will changing the connection type to "Bridging" work so that the PPP username & password can be managed and sent to BLINK via the Router? We will setup username and password in the router.

Are there any other settings I must change or alter to get the modem to act as a dumb bridge and allow NAT/Firewall features to be managed by the Linksys WRT54G router?

Do I have to do anything to disable NAT functionality in the Paradyne router?

I am helping my sister from a remote location, so I'm not in front of the computer to play with the setting first hand.

Thanks in advance for any help


Richard

[balthazor]

Hi Richard,

I did this when I first got DSL about 2 years ago.

What you need is to set up the modem in PPP IP extension mode - this is a bridging mode that allows the modem to login to TSTT, get assigned an IP address, but then passes that IP and DNS information via the ethernet port (using DHCP) to your router. In PPP IP extension mode NAT and firewall are disabled implicitly.

Your router will have to be set to accept IP and DNS information via DHCP through it's WAN port. The router then will be the only device doing NAT traversal, useful if you want to avoid redundant port forwarding rules or you want to set up some quality of service rules on your router as opposed to fiddling with the poor interface of the Paradyne.

You'll want to setup your modem first, then your router. Your modem will need a separate sub-net IP (I assigned my modem 192.168.1.1, and my router 192.168.0.1; as long as they are separate subnets you won't have a conflict.)

Go to the Advanced Setup - Wan page.

Click 'edit' of your new configuration.

VPI=0
VCI=35
Service=UBR without PCR
Leave QOS unchecked

next

PPP over ATM
VC/Mux encapsulation mode

next

username/password
PAP authentication
dial on demand unchecked
PPP IP extension CHECKED (this is the big one)
Keep alive checked
use static IP unchecked (unless you have one)
use the following gateway unchecked

next

enable NAT / firewall will be greyed out and unclickable (due to the PPP IP extension option checked earlier)
enable WAN service checked (name doesn't really matter, leave as default or whatever)

next

save

reboot

Now setup your router appropriately. Please note my instructions about the IPs at the top of this reply, because if your IPs are conflicting the setup won't work right.

But you sound like you know something about computers so hopefully you've got enough information to go on. My email is andrew dot balthazor at gee-male if you need further help - I don't frequent this forum often.

[balthazor]

richardm, on Jul 12 2008, 07:43 PM, said:

Will changing the connection type to "Bridging" work so that the PPP username & password can be managed and sent to BLINK via the Router? We will setup username and password in the router.

This won't work, by the way. I tried it. If your router supports PPPoA then it might, but then you wouldn't need the modem.

The connection has to be setup by the modem, but NAT & firewall can be handled by your router using PPP IP extension. This mode essetially extends the modem's assigned IP to the router; for all anyone can tell the router will have the external IP assigned by TSTT to your modem.