Only issue I know of is that if you turn on the DNS server, then it's an open resolver by default. You have to add a firewall rule(s) to protect it. Someone who went in not realizing that would have a problem. I never used the Mikrotik DNS on a large scale, so it could have practical limits that I'm not aware of.

------ Original Message ------
From: "Mathew Howard" <>
To: "af" <>
Sent: 2/12/2018 3:28:39 PM
Subject: Re: [AFMUG] ISP in a box

A CCR could certainly do DHCP and NAT... I seem to remember there being some reason that made using Mikrotik for a DNS server a bad idea, but it would be capable of doing that too. It doesn't take much to run a DNS server, so it might not be a bad idea to stick some kind of a little server in there anyway, but I really don't see any reason why it couldn't all go in a cabinet on the corner of the street... it wouldn't even need to be a particularly large cabinet.

On Mon, Feb 12, 2018 at 1:59 PM, Chuck McCown <> wrote:
Had a subdivision developer contact me, wanting service for their hundred or so homes. I can get DIA close to the area at a reasonable area. It will require some build but that is OK, that is something I feel some level of expertise.

Considering a minimal NOC build.

I asked this question of someone once before and I cannot find their answer. Not sure if asked on the list or not. But the answer went something like this:

Buy a big CCR. Hire Linktechs to configure it. Put in a big switch for the AE SFPs and rock and roll.

I am sure I would need at least one server.  DHCP, NAT, DNS?
But can all of that be provided by the CCR?

What is the smallest NOC configuration that could be created?

Batts, rectifier, cooling.

I really could put all this in a cabinet on the corner of the street.

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