RUN TCP/IP | Morgan Lucas is Tech Blogging

My laptop is refurbished. I've written about how there are a few ... quirks. Being a technology professional, I felt okay with adopting an older machine, knowing I had the skill to fix moderate issues. From dying drivers to monitor massacres, I've ID'd, solved, and documented a lot of issues.  The newest one was my Wi-Fi adapter dropping the connection to a specific extender. While troubleshooting, I was curious about doing recon of WiFi networks and broadcasting devices anyway. That issue? A power setting. It was so determined to save power, it would disconnect. The extender is also flirting with the older end of 6 years old.  The battery needs to be replaced, but that's new to me. As a Windows laptop, there are a plethora of options to pick. How do you decide which one is safest?  I am suddenly concerned about this despite having 3 unofficial, 15$ Macbook Air chargers from eBay, and no explosions. But let's move onto the Site Survey - Where can I find the stronges...

 " We are designing a new workspace with 3 floors. On average, there will be 100 devices on each floor that require wired and wireless connectivity. Submit a network design including: (1.) A network diagram (2.) Hardware choices (3.) VLAN and subnetting information (4.) Anything else you think is relevant. "    This was a question for a position at Shopify. While it was publicly available, I decided to wait and post this when the position closed. The Methodology/Framework Break it into chunks. Separate it by something, in this instance, the floors. Determine the departments. Subnets per floor - I'm not using CIDR. Pick the hardware. Ask other questions.

Happy 2021! A lot of the information came from this video by Network Direction. It also showed me how to use these virtual labs. Usually I just showed up, clicked random buttons, and moved onto local .iso because I knew how to get those started. Use Juniper vLabs for an online lab space to work in. Let the setup commence, click the arrow, then SSH!

Again; I've done this, but now there's so many new things, I'm doing it again. The truly new portions were...everything on the right side of this diagram; The cloud needed a coax connector and a copper Ethernet connector. It's all easy to install, turn off the cloud (Weird), install the modules. Getting the Cable section of Connections was an unusual struggle - The other drop down menu had nothing within. It required going into the Ethernet options and setting the Provider Network to 'cable', which is the next step AFTER the drop-downs. The rest was typical DHCP and DNS setups, mainly on the Cisco server down there. The post is rather short - How about adding a video to it? Find out what A Record means - This site says 'Maps a name to an IP address', which is DNS. So it's another name for DNS? You can change them (presumably in a local context) to associate an IP address to another name.

 If you're seeing this post, I'm helping you, and you probably have LI presence: React and share this post to help me in return.   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...

* I am using an Ubuntu server, which means I could skip epel-release and simply install Ansible from these instructions. Opening the configuration file in vi (as su, or you won't be able to overwrite), I'm pleasantly surprised it didn't take me more than 3 minutes to find #host_key_checking = False . The # means 'this is a comment', so let's take that away so it can work with the demo. Let's configure; This is openly available information over here . Let's ping it; Yes, apparently my Ansible was using older Python for backwards compatibility. But we did successfully ping the router! First bit of automation = ✅ With a bit of manipulation, we can run some good old Cisco IOS commands like 'show ip int brief'; The command is sudo ansible router -m ios_command -a "commands='show ip int brief'" I revisited this the next day and added the second router; I got a really funky error pointing out a...

Jira is a piece of project managing software that can be maintained on-prem on a server, or in the cloud (also, technically, on a server). It's a busy piece of planning software for software development, with various modes (scrum and kanban) depending on your project. You can learn the essentials remotely, with a 6-hour course - This is more of a brief, technical overview about using a Kanban board in Jira. Introduction aside, let's get into the completely fake idea of "Installing Wi-Fi At Hogwarts School of Witchcraft and Wizardry", and see how these boards can help keep me on track. Edited to add: This blog and the author supports trans women. This was posted before she decided to act that way online. That's not software! Don't think too deeply about the logistics of magic and technology.

 A 5-year old house is not quite optimized for ideal wireless setup. Let's help them. *Not an accurate representation to maintain security. Issue: The Wi-Fi router from Verizon is in the back of the house. Around 70% of the house can receive the signal, but not the office in the very front. Equipment: Netgear router (not extender) Netgear extender. Home router from Verizon Cable boxes Other things that use Wi-Fi.

You use LinkedIn because it's the biggest 'job networking' site on the internet. If you want a site that accepts multifaceted, interesting people, don't look there, look elsewhere: Twitter ! Twitter has... Great blocking and muting tools, from words to people. Lists to organize and sort. The ability to log into multiple Twitter accounts at once. Newsletter options, for us verbose people. You may be thinking "Twitter? But it's so..." casual? Genuine? That's what makes it great. For people like me who grew up in a wilder internet and find LI's culture stuffy (and racist , oop), Twitter ... can be just as racist, but at least you can call it out without repercussion. 

I have done a lot of AWS things on here. Time to give Azure some attention. After all, since employers don't think Cisco or COMPTIA certifications are important, maybe Microsoft ones are? First, let's really think about why these are the two biggest cloud services providers in the world: They've been doing internet things for a long time. Amazon launched in 1995 , a virtual bookstore. Microsoft, well, you know.  They've lived, breathed, and frankly, created, infrastructure that we use today, that they're selling to us today. Of course the Store of Everything and the Company of Everything would encourage us to put everything in their hands. Also: Azure has a lot less silly names for modules. Important. I appreciate straightforwardness. I said 'a lot less', not '100% sensible names' Microsoft has a clear set of Azure Fundamentals that anyone can interact with. Let's talk about networking basics, basically to say, again, ...

  Something I very recently learned is that routing protocols are learned on Control Planes. Also, welcome to possibly the last post of 2019. I need a break too!  There's plenty more coming in 2020. Meanwhile, visit and follow the new LinkedIn Company Page , if you please.

IGRP information is...scant. It's made by Cisco, and they have since moved on to EIGRP. EIGRP talks to its neighbors it knows via the neighbor table. Neighbors are directly connected. The topology table stores routes it learns from its directly connected neighbors  Hellos are sent every few seconds (Depending on Network capability) to make sure the neighbor is still there. A hold time is around 15 seconds. The router will drop the connection if the neighbor doesn't respond. Routers get updates via multicast address 224.0.0.10

Latest Update - 6/4/2020 This is a bit of an impromptu post after reading this article. I had a small thread about this on Twitter, a blog post is a lot better to get the information out in a clear way. Have you ever used Recruitin.net , came across a group of people who match Your Dream Company, Dream Location, and do your Dream Job on LinkedIn...and they're not active? What was the POINT, am I right?  A place for professionals to network, but they're not active ...because they have a job to do! You want to be like that! Unfortunately, in this day and age, unless you have a 'relationship' with someone, they're not going to help you.   Hm.  (Note: 'relationship' is different than relationship ). I'm not here to talk bad about recruiters - They have a difficult job, I know I couldn't do it! - And even they want a relationship before they place you somewhere, competency be damned. What do you do instead? This: (Note; I...