How to Create an Isolated Work/Lab Network on Linksys MR7350 (DD-WRT Part 4)

Welcome back to the Richard Lloyd USA YouTube channel! In Part 4 of our Linksys MR7350 and DD-WRT networking series, we build a third completely isolated network. If you have a home business, a sensitive NAS, or a home lab, you don’t want your kids or guests anywhere near your professional files. Learn how to dedicate LAN Port 4 to create a separate 192.168.40.X network supporting up to 254 devices—all while keeping your main router login isolated on Port 1 for maximum security. 📌 PINNED COMMENT STUFF: Grab the ready-to-go Configuration File and Network Diagrams here: https://richardlloydusa.com/%234-mr73... ⚠️ BEFORE YOU START: 🚀 Part #1 Don't Brick It! Linksys MR7350 DD-WRT Install Guide:    • Don't Brick It! Linksys MR7350 DD-WRT Inst...   🚀 Part #2 Your Smart Home Devices Are a Security Risk. Jail Them:    • Your Smart Home Devices Are a Security Ris...   🚀 Part #3 Lock Down Your Network: Advanced Router Isolation:    • Lock Down Your Network: Advanced Router Is...   If you haven't watched Part 3 yet, stop and watch that first so your router is properly configured. If you use my downloadable config file, read the included ReadMe text to change the default passwords! 💥 Download the config files & instructions directly from my website: http://richardlloydusa.com 🚀 🛠️ 🛒 TOOLS & GEAR USED IN THIS VIDEO OR SUGGESTED (Paid Affiliate Links): ► Linksys MR7350 Dual-Band Wi-Fi 6 Router at Amazon: https://amzn.to/49Hzyow • TP-Link 8 Port Gigabit Network Switch at Amazon: https://amzn.to/4ehb8oy • RENEWED TP-Link 8 Port Gigabit Network Switch at Amazon: https://amzn.to/4ubV6B0 • TP-Link TL-SG105, 5 Port Gigabit Unmanaged Switch: https://amzn.to/4x5jgzW • RENEWED TP-Link TL-SG105, 5 Port Gigabit Unmanaged Switch: https://amzn.to/4dXIZkS • Tenda SG108, 8 Port Gigabit Switch at Amazon: https://amzn.to/4e0Vw7o • Tenda 5 Port Gigabit Ethernet Switch at Amazon: https://amzn.to/4o0lUCQ • Official OpenWrt Wiki Page for MR7350: https://openwrt.org/inbox/toh/linksys... • Official DD-WRT Webpage: https://dd-wrt.com • Official DD-WRT Database (All Beta Firmware): https://download1.dd-wrt.com/dd-wrtv2... • Get 83% OFF on Private Internet Access VPN: https://www.piavpn.com/RichardLloyd • USB 3.0 Gigabit Ethernet LAN Adapter at Amazon: https://amzn.to/3WRyPtv or eBay: https://ebay.us/jaODUs • USB C to Ethernet Adapter for Laptop PC at Amazon: https://amzn.to/43wfwaY or eBay: https://ebay.us/5NSNpE ▼ ⏱️ VIDEO CHAPTERS & TIMESTAMPS 00:00:00 – Introduction: Part 4 overview for the Linksys MR7350 running DD-WRT. 00:00:14 – Recap of Part 3: Reviewing the admin router, home network, and jailed IoT setup. 00:01:12 – New Subnet Architecture: Why you need a third isolated network to separate work from kids. 00:01:41 – Download Instructions: How to access setup files and diagrams via the pinned comment link. 00:02:20 – Passwords Warning: Crucial instructions to change default credentials for security. 00:03:03 – Subnet Planning & Lab Use Cases: Introducing the 192.168.40.X IP range for routing labs. 00:04:12 – Expanding Your Ports: Dedicating Port 4 and scaling remaining home ports with an 8-port switch. 00:05:19 – Wi-Fi Range Limitation: Explaining the 328-foot Ethernet limit and Access Point workarounds. 00:06:09 – Physical Setup Rules: Connecting to Port 1 and disconnecting local Wi-Fi before configuring. 00:07:00 – No Built-in Ethernet Port? Using a $10 USB 3.0 to Gigabit adapter for your hardware connection. 00:07:57 – Router Portal Access: Logging into the default 192.168.1.1 gateway address. 00:08:14 – Enhancing Security with HTTPS: Enabling encryption to protect administration passwords. 00:08:43 – Self-Signed Certs: Why browsers throw a safety warning for local HTTPS and how to proceed. 00:09:02 – Configuration Methods: Deciding between importing the download package or manual setup. 00:09:47 – Setup Menu: Beginning manual step-by-step navigation through basic network parameters. 00:11:05 – Local IP & DHCP Options 00:17:40 – Advanced Routing: Configuring operation modes and dynamic routing variables. 00:21:15 – Wireless Interface: Establishing security modes, isolating SSIDs, and setting keys. 00:24:30 – Firewall Security Rules: Writing filtering rules to prevent data leaks across subnets. 00:28:10 – Administration Diagnostics: Updating system credentials and remote access parameters. 00:31:18 – Subnet Troubleshooting: Common configuration mistakes that trigger device lockouts. 00:33:33 – Video Wrap-Up: Answering viewer feedback and inviting community suggestions for Part 5 If you found this video helpful, please give it a thumbs up and subscribe for more networking guides! Drop any questions in the comments—I'm down there all the time responding! #DDWRT #LinksysMR7350 #HomeNetworking #CyberSecurity #RichardLloydUSA