Skip to main content

It's An Ubuntu Server!: Username Resolution with DNSmasq

I don’t actually have a domain name to use but let’s pretend!





My server’s name is called Saturnine-U

We could set up a host file on every machine on the network:

192.168.0.2  Saturnine-U (though I wonder how that - will fit in)

but that’s not efficient! Let’s use DNS, it’s like a central directory.

I can configure this on a Cisco router easily but Ubuntu? Well, that’s why we’re here! Learning!

Let’s install dnsmasq

(I type in sudu apt get dnsmasq because ‘get’ is how we…got stuff in Red Hat but nope, get should be install)



Nice, then I save and escape (before going back in to check that I saved properly)
and restart with sudo systemctl restart networking.
[I forgot ‘networking’ at first and got ‘too few arguments’ as a message. Helpful!]




Back to opening ports with sudo ufw allow 53/tcp
It also allows it for IPv6.

(I’m doing this in a starbucks so I can’t wander in and mess with their router. Well, I could, if I knew the IP address. Any guesses? Just kidding…)

I’d have to restart it. Ideally, I could ping Saturnine-U with just the name and it would work.

I’ll see if I can get it to work at home with my Comcast router and update if I can!

Comments

Popular posts from this blog

What Do You Need? [AKA; List of Offered Services / My Next Role] (2020)

UPDATED 2021 I am a trusted outsourced remote consultant for your company.   I enjoy having the flexibility to take on temporary projects from time to time! I start at part-time, temp work for now. If we like each other, we can renegotiate. If anything sounds weird, out there, or unusual - Feel free to e-mail me .  3 Services Offered Technical: Cloud Technician     Azure [ See tag ] WORKING ON: Infrastructure As Code (Specifically Terraform/Azure and CloudFormation/AWS)  Support [Web: Example Job Description ] [Text : Example Description ]     I help you with adjustments in HTML, CSS, and Javascript.     When you email a business a question and they answer? That's me.   IT Operations Tech [ Example Job Description ]     Hardware and SaaS support.     Cisco routing and switching (Networking). CCNA, A+, Sec+, Azure certified WORKING ON: Junos Networking  Writing :      You want to pay me to write more of *waves hand* this blog? I am game .     I write B2C e-mails going out to o

Contactless Tech’s Role in the New Guest Experience ft. Intelity and The George

 Contactless hospitality technology is growing. You want to get away, and you'll be damned if a little thing like a deadly virus will stop you! But you still don't want to touch things. Ew. During the chat between INTELITY CEO Robert Stevenson and THE GEORGE Director of Operations Kerrie Hunter, you’ll learn how the historic boutique hotel has adapted a mobile-first guest experience in the wake of COVID-19—and how they see contactless technology affecting the future of hospitality. I don't remember how I found INTELITY (probably hoping to score a position with them), but I liked them enough to stay on the e-mail lists.  

Connecting IoT Devices to a Registration Server (Packet Tracer, Cisco)

In Packet Tracer, a demo software made by Cisco Systems. It certainly has changed a lot since 2016. It's almost an Olympic feat to even get started with it now, but it does look snazzy. This is for the new CCNA, that integrates, among other things, IoT and Automation, which I've worked on here before. Instructions here . I don't know if this is an aspect of "Let's make sure people are paying attention and not simply following blindly", or an oversight - The instructions indicate a Meraki Server, when a regular one is the working option here. I have to enable the IoT service on this server. Also, we assign the server an IPv4 address from a DHCP pool instead of giving it a static one. For something that handles our IoT business, perhaps that's safer; Getting a new IPv4 address every week or so is a minimal step against an intruder, but it is a step. There are no devices associated with this new server; In an earlier lab (not shown), I attached them to 'H