Local DNS resolution

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hio77

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#1715140 3-Feb-2017 20:26

For my home network, i have it all linked to one of my domains; baird.io

Home Lan : all devices are resolved as <computername>.home.baird.io

HAB Lan : all devices are resolved as <computername>.hab.baird.io

Guest Lan : all devices are resolved as <computername>.guest.home.baird.io

by default pfsense handles this reasonably well, i have since started having dhcp allocate the dns names on the DNS server as it can sometimes be inconsistant in resolving otherwise.

Different subnets are handed out their own search domains for all of this

Makes for very clean reasoltion within the network:

C:\Users\halo7>ping autobot

Pinging autobot.home.baird.io [10.3.57.125] with 32 bytes of data:
Reply from 10.3.57.125: bytes=32 time<1ms TTL=64
Reply from 10.3.57.125: bytes=32 time<1ms TTL=64
Reply from 10.3.57.125: bytes=32 time<1ms TTL=64
Reply from 10.3.57.125: bytes=32 time<1ms TTL=64

ontop of this i do own a ssl cert for my pfsense box, simply because why not...

I do have a few manual entries into the dns to make it look much cleaner such as VPN hop points.

The one bit that i am yet to perfect is effective naming without affecting anything on the nat side of things for balancing.

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michaelmurfy

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#1715188 3-Feb-2017 22:30

davidcole:
So the USG doesn't seem to be like most of the other routers I've used with regards dnsmasq etc. If I want static Ips (and resolvable names) I need to make this config.gateway.json file?
What ties the MAC address to an IP, since the option they talk about is hostname,ip?

With the USG yes only because the controller will just overwrite its configuration. The USG will read anything in /etc/dnsmasq.d/ so you could always create "home.conf" for example under that folder and reload dnsmasq on the router but you'll want to script it (store scripts under /config/scripts/) because it'll be wiped with each firmware update. Otherwise just run a separate DNS server and set DNS forwarding on the USG to point to it. On my network like I said I've got a Pi doing it with the Edgerouter doing DNS forwarding - each of my hosts are configured with the primary DNS of 192.168.2.4 and secondary of 192.168.2.1 so if the Pi went down for any reason I could just ask my router to be the DNS server.

A little more geeky than doing it just via the router (like you asked!).

Michael Murphy | https://murfy.nz
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davidcole

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#1715639 5-Feb-2017 09:32

michaelmurfy:
davidcole:
So the USG doesn't seem to be like most of the other routers I've used with regards dnsmasq etc. If I want static Ips (and resolvable names) I need to make this config.gateway.json file?
What ties the MAC address to an IP, since the option they talk about is hostname,ip?

With the USG yes only because the controller will just overwrite its configuration. The USG will read anything in /etc/dnsmasq.d/ so you could always create "home.conf" for example under that folder and reload dnsmasq on the router but you'll want to script it (store scripts under /config/scripts/) because it'll be wiped with each firmware update. Otherwise just run a separate DNS server and set DNS forwarding on the USG to point to it. On my network like I said I've got a Pi doing it with the Edgerouter doing DNS forwarding - each of my hosts are configured with the primary DNS of 192.168.2.4 and secondary of 192.168.2.1 so if the Pi went down for any reason I could just ask my router to be the DNS server.

A little more geeky than doing it just via the router (like you asked!).

So I'd rather not do the latter, as that would require another device running.

So I'm happy with the concept of the config.gareway.json. Now in terms of adapting a USG into an existing network I see they have a post on this for getting the USG to the correct lan ip if not 192.168.1.0, before adopting.

But what could I do for making it not screw up my local lan config while it get the forma of the config file for setting all my machines to their current ip ranges.

Could I run and isolated controller, or use the iOS app, ssh config? I have about 15 devices I want to set up with names, and get to the pick up via ip their current up adddreses.

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