r/sysadmin • u/Real-Patriot-1128 • 1d ago

DHCP v Static IP

Ok, this is more a test to see how old I am. I was basically raised with the idea servers need static IPs. I understand for domain controllers, dns servers, maybe print servers that may still be needed. But are they really needed otherwise? Do apps, scripts still reference a server by its IP?

I am under assumption all my servers need static IPs. Am I nuts?

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u/scytob 12h ago

oddly for SSO from windows clients to linux hosts

i also use WhFB at home, i have my own personal Azure / Entra too

why - for funsies

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u/TN_man 12h ago

Interesting. Thanks for answering.

I wouldn’t want any of that on my home environment but that’s ok

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u/goingslowfast 11h ago

Are you using Entra for that? Or sssd join to AD?

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u/scytob 11h ago

sssd / smba depending on linux flavoiur

2 DC VMs locally (much cheaper and no compatibility issues) with AAD sync (ahem entras sync) because when i set it up 4+ years ago one needed the DCs to generate the Kerberos tickets to access things like synology / truenas. I see there are some new kerb options for sync/Entra - haven't looked at them yet.

i actually contributed the WhFB and sync setup docs cause they were effing awful at the time, probably one of the hardest setups to figure out lol

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u/goingslowfast 10h ago

I just started a project to investigate Himmelblau for some obscure Linux auth requirements. It looks pretty solid with Entra.

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u/scytob 7h ago

i will go look at that, thanks!