[ale] static ip network configuration

[DJPfulio at jdpfu.com]

After seeing a network with 2K systems/devices taken down by a DHCP issue, I only use DHCP Reservations where there's not really a choice for a specific device OR for portable devices that need to be on different networks from time to time, like a laptop.

All other devices use system-side static IPs.  That way, when the the dhcp server/router eventually fails, my systems will still communicate between each other fine.  If you have any internal servers, like nextcloud, NAS, or even a printer, having those devices configured with their own static IP will keep them working during the DHCP outage.

Of course, DHCP outages always happen when we aren't in any hurry. They'd never happen when we need to print something or access files on our NAS, right?

Most IoShit devices don't allow local configuration of a static IP, so we have only 1 choice - DHCP reservation.  If you have IoShit devices, they need to be on separate networks from all other devices anyway with a /32 route to the internet. And if you are like many people here, you'll want to block where they are allowed to visit on the internet to be just those 3 places necessary so they work, but not the places the vendor has sold your data to for added revenue.  Without a static IP, it is really hard to firewall stuff, unless you place all of it onto a dedicated IoShit network, as the FBI has been recommending for years.

A solid network architecture is the first step in running secure systems.  You gotta keep 'em separated, so the malware and tracking-ware diseases don't spread.  Don't disrespect your network. You gotta keep 'em separated.

On 1/12/25 02:39, Ron / BCLUG via Ale wrote:
> 
>> Using a router to provide static IPs to different devices can work
> 
> This can be a good way to do it, as configuration is all in one
> place.
> 
> 
> Also, if a router requires replacement, all devices can be offline
> until router subnet is set to match the fixed / static IP assigned to
> all the devices.
> 
> If using DHCP reservations, a replacement router will hand out random
> IPs to every device - and they'll work - until reservations are
> reconfigured on new router.
> 
> 
> I prefer this method myself in most cases.
>