i have all of those things on my ubuntu server; but i wouldn't characterize all of them as enterprise-grade . my ubuntu server it's based off of off-the-shelf hardware from a couple years ago and it does all of those things that you described plus more.

it's my wifi router; my data storage backup; my home made security system; my media server inside; & my cat's favorite warm spot all within a tiny case the size of a toaster with lots of harddrives. it uses 2 kvm/qemu based virtual machines on top of the bare iron and they both use pci-passthrough; the first virtual machine is based off of the pfsense soft firewall & router and also serves to air-gap the bare iron server from the internet and the second virtual machine is windows 10 and serves to provide wifi 6 & 7 speeds with the windows ap driver.

i wouldn't describe any of it as enterprise grade since they're a bit hacky: for example, the server is mostly headless; but i did install the xserver & vnc because i use the motion project along with a bunch of old androids to create a homemade security monitoring system and that requires a browser. this means that i can now access the server's gui anywhere than i want; but it's subject to vnc's limitations.

however the things that come from the soft firewall are definitely enterprise grade: the vpn works well and i can use both it and ssh from anywhere in the world to access my home network and i could theoretically add in a remote check in capability from a new project that reacts to incoming connections.

the only thing i don't think it could do i the high temperatures; the case is compact so i doubt that its thermals are any good.