Re: sharing a network connection from debian to non-debian
On 1/16/2021 6:02 AM, Dan Hitt wrote:
In 2016, i had a computer with mint on it (which is a form of ubuntu), and
it was connected to an internet modem. There was a super simple gui on it
that i could use to share that connection with some older hardware that
were not directly connected to the internet modem. (They were not
connected to the internet modem because for whatever reason, directly
connecting them made them very unstable and prone to crash.) But,
nevertheless, the old hardware could use the mint box with no configuration
on my part, and get out to the internet through it.
If you could share your internet connection to multiple devices, the
internet modem you are refering to is probably a router with integrated
modem.
Okay, I'm nitpicking here but this might be useful for the below.
Now, as it happens, i'm planning on upgrading that mint box to debian.
I would suggest reinstalling Debian from scratch.
In preparation for that, i'm trying to share the internet with them using
another box, which has debian on it, and which is connected to the internet
modem. The debian box has some address like 192.168.*.* on the internet
modem network, and an address like 10.*.*.* connected to the old hardware,
and the two networks have no direct connection, they just both hook up to
my debian machine (one on the motherboard's ethernet, and one on a
usb/ethernet device).
For the old hardware, i can specify the address, a gateway, and a host for
dns (all done by ip). I would choose the ip of the debian box for both the
gateway and the dns, and i'd take the ip address of the old hardware to
just be something unused (no need to run dhcpd on the debian box, i think).
You can certainly use static addressing Dnsmasq has the advantage of
conbining a DHCP and DNS server.
So I would say using Dnsmasq instead of Dhcpd and Bind will be way
easyier if you want to go with dinamic addressing
So i just need to know what to do on the debian box so that it can field
requests to get ips from host names on the internet, and forward packets to
the internet modem. Hopefully, it will be some simple tool like
nm-connection-editor, but maybe it has to be a series of commands. If it
is a series of commands, what are they?
It looks like you are using a desktop environment, you might be heading
for trouble trying to mix GUI tools and serving internet connection to
clients.
What you need on that Debian box is to route the packages from your
internal network to your external network (1, might be what you want).
Unless you want to learn and play with it, I would suggest you, if you
can afford, to buy a ''router' with no built-in modem that you would
plug behind your ISP modem.
1) https://fedoramagazine.org/internet-connection-sharing-networkmanager/
--
John Doe
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