On 4/28/23 20:25, rhkra...@gmail.com wrote:
Some key phrases / sub topics:
* Astound (cable based) ISP in eastern Pa. area
* Arris DG2470A modem / router in bridge mode with Ubiquiti Edge Router X
* Ubiquiti Edge Router X in DMZ
I'm tired but I'm lost at your set up and I'm not in the US! :)
- Is Astound simply the name of your ISP or is it a HW from your ISP?
- Arris DG2470A, where is it coming from (provided by your ISP?)
- Ubiquiti Edge Router X in DMZ, why is DMZ relevent in this set up?
Aside: I'm in a catch 22 -- my new, cable-based ISP (Astound / RCN) says my
questions are out of scope and I should talk to the manufacturer. The
manufacturer says that the Arris DG2470A modem / router is not something they
sell to the end user (only to ISPs or such), and thus I should get support
from the ISP, so:
Okay, Arris is the modem provided by your ISP! :)
I've now signed up to a new ISP (Astound / RCN) that provides access via cable
(and, of course, a cable modem, an Arris DG2470A -- it does include a router
but without all the features I'd like to have). So far, I have not been able
to connect to Astound with the modem in bridge mode (and using DHCP in the
router).
Bridge mode will disable router capability which include DHCP capability.
I'm not 100% sure whether Astound (in my area, around Allentown, Pa.) uses
PPPoE or DHCP to make the connection. So far, I've tried only DHCP.
I would say cable uses DHCP or a static IP if you pay for it.
Astound does need to do something on their end to register the modem in order
to make it work. They have told me that the thing they need to register the
modem is the MAC address (and, of course, they have that for the Arris).
This is possible but that could also be something else.
My ISP does not use the mac addr!
I've also seen a suggestion that I put the Ubiquiti in the DMZ zone of the
Arris, but I haven't fully assimilated that suggestion, for example, I'm not
sure what IP address to assign to the (WAN) port of the Ubiquiti in that case
-- a private address on my LAN or something else.
If you use your Arris in router mode, you could use the DMZ capability
to avoid FW and some other stuff that the Arris would do if your Ubikiti
was not in the DMZ.
In other words, bridge mode will give the public IP from your ISP to
your Ubikiti while DMZ will let you use the FW from your Ubikiti to
protect the network that is behind your Ubikiti while getting an private
IP from your ISP Arris modem router.
(Right now I've got a bunch of web pages open, some of which I've started to
read -- when I find / get back to the page that suggests putting the Ubiquiti
in the DMZ, my questions might be answered (on the subject of putting the
Ubiquiti in the DMZ).
If I can, I'll always use a modem from my ISP with my own stuff behind it.
If my ISP does not give a modem, I'll revert to put it in bridge mode
which will act effectively as a modem.
If I can not get a modem or have access to bridge mode, I will resort to
a DMZ capability from my ISP crap!
I'm also not sure what problems having the Ubiquiti in the DMZ might cause --
in general, I'd prefer to have the Ubiquiti connected to the Arris in bridge
mode (because of my past experience).
+1
I did think about using both the Ubiquiti (and DHCP, if that's what Astound
uses in this area) and the Arris sort of in series (the Ubiquiti ("downstream"
of the Arris) then doing the DHCP (and other features, e.g. QOS) for the LAN,
but I'm leery of doing that because I've seen (somewhat vague) warnings on the
Internet about doing double NAT. (Maybe that is only an issue of speed, which
Double NAT is one thing but the real issue to me in this case what is
the deffinition of DMZ for the Arris.
I don't think would bother me -- the Astound connection could be 30 (or more
(or less)) times as fast as the DSL connection.)
I suppose I could do the two in series (as mentioned above), leave DHCP turned
on in both, but the firewall turned off in the upstream modem / router.
Which is what the DMZ should do, note that in the DMZ set up the client
side of your Arris would get a lease from your ISP with a public address
then the DHCP server of the Arris would dish out an private Ip to your
Ubikiti DHCP client in this case and the DHCP server of your Ubikiti
will provide private IPs to your network(s).
I'm getting too old -- trial and error (as I've done a few times) is nerve
wracking for me. Even getting the Ubiquiti back to the configuration to use on
my DSL ISP drove me crazy, I had to try a few times to do that (I haven't
cancelled my DSL ISP yet), and I'm not sure that I know the exact steps to get
that setup working again if I have to (i.e., if I try the Astound connection
and don't get it working), but I feel, since I accomplished it once, I can do
it again (i.e., I'm seeking comments on the problems of connecting to
Astound rather than those of reconnecting to my DSL ISP).
You should be able to back up the config of your Ubikiti when it's
working in ADSL mode.
Basically, it should be:
- ISP modem in bridge mode connected to the wan of your Ubikiti and it
should work unless Astound is ...
HTH.
--
John Doe
