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Configure Netgear DG834G v4 as a regular Wired+Wireless Router (without ADSL)

aidar
Aspirant

Configure Netgear DG834G v4 as a regular Wired+Wireless Router (without ADSL)

I’ve got Netgear DG834G v4 “Wireless ADSL2+ Modem Router” (https://www.netgear.com/support/product/DG834Gv4.aspx). It has
- 4 ethernet ports 100Mbps
- 1 ADSL port
- Wireless antenna for 54 Mbps Wi-Fi
The device gets Internet from ADSL port, assigns private IPv4 addresses using built-in DHCP and provides Internet via Ethernet ports and Wi-Fi.
Does anybody know if there is some firmware that would enable DG834Gv4 to obtain Internet from one of its Ethernet ports (instead of ADSL port), then share the Internet via remaining 3 Ethernet ports and Wi-Fi (built-in DHCP should not broadcast to the Ethernet port from which DG834Gv4 gets Internet)?
Essentially, DG834Gv4 becomes a somewhat regular wired+wireless router.
DG834Gv4 is in perfect working condition, so it would be a pity to throw it away, to some landfill, if it could be reprogrammed instead.
It seems there might be a 3rd party firmware https://openwrt.org/toh/netgear/dg834g with certain technical issues, but it would be nice if Netgear had a verified solution for this simple use-case.
Thank you.

Model: DG834Gv4|54 Mbps Wireless ADSL2+ Modem Router|EOL
Message 1 of 5

Accepted Solutions
antinode
Guru

Re: Configure Netgear DG834G v4 as a regular Wired+Wireless Router (without ADSL)

> [...] it would be nice if Netgear had a verified solution for this
> simple use-case.

 

   Perhaps, but it would be unrealistic to expect Netgear to do anything
for this slow, weak antique.

 

   As a general-purpose router, there may be no real hope.  You might be
able to configure it as a (slow, weak) wireless access point (because
that's possible for almost any router).  See, for example:

 

      https://community.netgear.com/t5/x/x/m-p/1463500

 

That's written for a Netgear C6300-as-WAP, but the steps are about the
same for any other router (any make/model) which lacks a one-step WAP
option.

View solution in original post

Message 2 of 5

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antinode
Guru

Re: Configure Netgear DG834G v4 as a regular Wired+Wireless Router (without ADSL)

> [...] it would be nice if Netgear had a verified solution for this
> simple use-case.

 

   Perhaps, but it would be unrealistic to expect Netgear to do anything
for this slow, weak antique.

 

   As a general-purpose router, there may be no real hope.  You might be
able to configure it as a (slow, weak) wireless access point (because
that's possible for almost any router).  See, for example:

 

      https://community.netgear.com/t5/x/x/m-p/1463500

 

That's written for a Netgear C6300-as-WAP, but the steps are about the
same for any other router (any make/model) which lacks a one-step WAP
option.

Message 2 of 5
aidar
Aspirant

Re: Configure Netgear DG834G v4 as a regular Wired+Wireless Router (without ADSL)

Thanks a lot, this solves the problem!

The idea has been to use this old, unused device to provide Wi-Fi as a courtesy in a place where otherwise there would be none. Its speed is more than enough. Also, it has stronger signal (possibly because of external antenna) that is better at penetrating concrete walls, feels more robust and convenient than newer optical wireless routers provided by ISP.

Message 3 of 5
antinode
Guru

Re: Configure Netgear DG834G v4 as a regular Wired+Wireless Router (without ADSL)

> [...] The idea has been to use this old, unused device to provide
> Wi-Fi as a courtesy in a place where otherwise there would be none.
> [...]

 

   Ok, but a phrase like "obtain Internet" was not very clear.  If you
want a _router_, then DG834Gv4 may be useless.  If you want a wireless
access point (to extend the wireless-network coverage of some _other_
router), then there's some hope.

Message 4 of 5
aidar
Aspirant

Re: Configure Netgear DG834G v4 as a regular Wired+Wireless Router (without ADSL)

Thank you for the clarification!

Indeed, the original idea was to use DG834Gv4 as a router. With one of the four Ethernet ports, instead of ADSL port, being connected to the Internet (upstream router).

DG834Gv4’s built-in DHCP server would assign private IPv4 addresses to wireless clients, DNS in those leases would point to 1.1.1.2 or 1.1.1.3 for additional security (https://1.1.1.1/family/).

DG834Gv4’s built-in NAT would ensure that larger LAN IP address scheme remains unaffected, no need to extend the scope or shorten lease duration, as DG834Gv4 itself would need only one IP address from larger LAN (all its wireless clients would be behind NAT).

I was hoping that someone at Netgear developed such a scheme/firmware years ago, maybe as a side project. Or maybe its ASIC just cannot do this…

Your scheme that I had not envisioned, DG834Gv4 as a simple WAP, also solves the problem. But it would require to ensure that existing DHCP scope can accommodate a number of new wireless hosts (as opposed to just one IP address for DG834Gv4 itself, when its NAT is employed), the lease duration is not too long (wireless hosts come and go, wired desktops work for years), and some future changes to IP address scheme by the network administrator would not accidentally exhaust the available pool.

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