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Sheridan Computers

@sheridan.co.uk

82 followers 78 following 192 posts

youtube.com/@sheridans

Posts Replies Media

Sheridan Computers @sheridan.co.uk · 30/09/2026

FreeBSD 15.0-RELEASE is now End of Life. As promised here is the second video explaining how to upgrade.. This version users the newer pkgbase method. If you are still using freebsd_update please refer to the previous video. #FreeBSD #OpenSource #CyberSecurity youtu.be/ZaEr4kyiCmU?...

How to Upgrade FreeBSD 15.0 to 15.1 Using pkgbase

YouTube video by Sheridan Computers

Sheridan Computers @sheridan.co.uk · 29/09/2026

Tomorrow marks the end of FreeBSD 15.0-RELEASE. Here'a the first of two videos covering both binary upgrade paths. FreeBSD-base/pkgbase out tonorrow. #FreeBSD #OpenSource youtu.be/HUnpWMCTXyg

How to Upgrade FreeBSD 15.0 to 15.1 Using freebsd-update

YouTube video by Sheridan Computers

Sheridan Computers @sheridan.co.uk · 29/09/2026

7 years ago today I started a YouTube channel to record videos for my own reference, such as stripping down laptops. Today that goal has moved to teaching others what I can about networking, firewalls, storage, and operating system. #YouTube #TechTutorials youtube.com/@sheridans

Sheridan Computers @sheridan.co.uk · 28/09/2026

An ask for the OPNsense community. Sheridan Computers is a finalist for Security Innovation and Specialist MSP of the Year, with our boot environment work and Tailscale plugin. You can vote once in each category with a business email: mspchannelawards.com/vote?entry=271 #OPNsense #OpenSource

mspchannelawards.com

MSP Channel Insights Awards 2026 - Nominations Open

Recognising the best of the MSP channel. Enter for free, showcase your innovation, and celebrate at our London awards ceremony.

Sheridan Computers @sheridan.co.uk · 23/09/2026

One worth checking today if you run a WordPress website. wordpress.org/news/2026/09... #WordPress #Websites #Security

Sheridan Computers @sheridan.co.uk · 19/09/2026

We needed a quick way to test laptop keyboards without an operating system installed. Existing tools were buried inside large diagnostic images, so we created Kbdcheck: a free 47 MB bootable USB image based on Arch Linux: keyboard, mouse and touchpad tester. Use FREE, no registration. kbdcheck.com

Sheridan Computers @sheridan.co.uk · 18/09/2026

Part of refurbishing a laptop properly is checking the things that are easy to miss. Keyboard, touchpad, buttons and other inputs all get tested before it leaves the bench. Just one part of the refurbishment process. #SheridanComputers #RefurbishedLaptops #LaptopRepair #Manchester #Stockport

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Reposted by Sheridan Computers

Klara Inc @klarainc.bsky.social · 17/09/2026

Best practice for FreeBSD upgrades: bectl create pre-15.1 before you touch anything. A ZFS boot environment makes rollback a reboot, not a restore-from-backup. More practices that lower the production upgrade bill: article linked below.

Sheridan Computers @sheridan.co.uk · 17/09/2026

Spent most of today chasing an RDP failure on a completely fresh Windows 11 25H2 install. The fix was obscure enough that I've written it up properly in our Knowledge Base in case it saves someone else the same day. #Windows #RemoteDesktop sheridancomputers.com/knowledge-ba...

sheridancomputers.com

Windows 11 25H2 Remote Desktop Not Working - RDP Connection Fix

If Remote Desktop is enabled on Windows 11 25H2 but other computers still cannot connect, forcing RDP to use TCP instead of UDP may fix the problem. We encountered this on a fresh, fully up…

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Sheridan Computers @sheridan.co.uk · 07/09/2026

We independently verified the behaviour described in the latest ScreenConnect advisory. A malicious or modified client can abuse file transfer during a support session. Apply the published mitigation now, meep an eye out for an official fix. #ScreenConnect #MSP #CyberSecurity #ITSupport

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Sheridan Computers @sheridan.co.uk · 04/09/2026

ConnectWise issued a security advisory yesterday affecting file transfers in ScreenConnect Remote Access. The issue affects both Support and Access sessions, including Cloud and On-Premise deployments. There is no CVE or full technical detail yet. #ConnectWise #ScreenConnect

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Sheridan Computers @sheridan.co.uk · 29/08/2026

If you pay an IT company every month, could they show you what they actually did for you?

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Sheridan Computers @sheridan.co.uk · 27/08/2026

If you manage UniFi equipment, I would check your updates today. Ubiquiti has disclosed 22 new security vulnerabilities, 21 of which are rated Critical. #UniFi #Ubiquiti #Security

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Sheridan Computers @sheridan.co.uk · 26/08/2026

I already owned commercial PAT testing software, the problem was I stopped using Windows. #ElectricalSafetyTests #PortableApplianceTesting #PAT

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Sheridan Computers @sheridan.co.uk · 25/08/2026

Using Arch Linux with a LUKS-encrypted SSD? TRIM can be blocked by the encrypted device mapping even when the SSD itself fully supports it. Full guide: forums.sheridancomputers.com/t/enabling-t... #Arch #Linux #LUKS #DriveEncryption #SSD

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Sheridan Computers @sheridan.co.uk · 23/08/2026

A few too many power cuts at the new office sent us down the NUT on FreeBSD rabbit hole. We have written up the full working Powercool 1000VA/850VA setup, including the USB quirks, clean shutdown and automatic recovery: forums.sheridancomputers.com/t/powercool-... #FreeBSD #SysAdmin

Sheridan Computers @sheridan.co.uk · 15/08/2026

HDMI or DisplayPort? For a PC monitor, I’d normally use DisplayPort if it’s available. TV or console? HDMI. Basic office screen? Either is fine. And if your new 4K monitor feels oddly sluggish, check the refresh rate an older port or cable may be limiting it to 30Hz.

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Sheridan Computers @sheridan.co.uk · 05/08/2026

This is where the magic happens. 🔧💻 My son is spending part of his six-week holidays in our downstairs workshop, where we handle all laptop and PC repairs in-house. Not a bad place to learn how things really work.

Sheridan Computers @sheridan.co.uk · 31/07/2026

We’re an MSP, but we’re engineers first. Sheridan Computers provides commercial FreeBSD support for web, mail, ZFS storage, PBX and secure remote-access systems. We’ve also contributed to OPNsense, including snapshots and Tailscale. #FreeBSD #OPNsense

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Sheridan Computers @sheridan.co.uk · 09/04/2026

OPNsense 26.1.6 released. Update if you use LDAP authentication! #OPNsense #Firewalls forum.opnsense.org/index.php?to...

forum.opnsense.org

OPNsense 26.1.6 released

OPNsense 26.1.6 released

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Sheridan Computers @sheridan.co.uk · 27/03/2026

Remote support tools are constant fight! Security, viewer o/s compatability, disabling a/v or using free tools (Rustdesk) to install paid tools. Finally, nearly 2 years in development it's starting to look real! #ProudMoment #RemoteAccess #ITSupport #SheridanConnect m.youtube.com/watch?v=3a6t...

Sheridan Connect – Browser-Based Remote Access [POC]

YouTube video by Sheridan Computers

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Sheridan Computers @sheridan.co.uk · 21/02/2026

Spent 8 hours tracking down a rendering bug in iced 0.14, 4 different AI assistants, burning resources like Dr. Who on a manic hunt for Rose. The fix was 12 characters. Filed the issue, submitted the PR. ¯\_(ツ)_/¯ #rust #iced #coding #opensource #givingback github.com/iced-rs/iced...

fix: wgpu from_rgba generates a new unique Id on every call. by sheridans · Pull Request #3257 · iced-rs/iced

When pixel data exceeds MAX_SYNC_SIZE the async upload path stores the GPU result under that Id, but the next frame presents a different Id the result is never retrieved and the image is permanentl...

Sheridan Computers @sheridan.co.uk · 19/02/2026

Needed a reliable way to migrate between #opnsense and #pfsense (both ways) for clients. Couldn't find a solution that could do either well, yet alone both. Test it, break it, tell me. github.com/sheridans/pf...

GitHub - sheridans/pfopn-convert: Bidirectional pfSense and OPNsense firewall configuration migration and conversion CLI with diff and validation.

Bidirectional pfSense and OPNsense firewall configuration migration and conversion CLI with diff and validation. - sheridans/pfopn-convert

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Sheridan Computers @sheridan.co.uk · 05/02/2026

isc2kea v1.2.0 is out. This turned into a full on @opnsense DHCP migration tool (subnets, options, backend server switch, restarts). Doing this one firewall at a time would've been a pain in the arse. Test it. Break it. Tell me. 😝 #OPNsense #OpenSource #FreeBSD github.com/sheridans/is...

GitHub - sheridans/isc2kea

Contribute to sheridans/isc2kea development by creating an account on GitHub.

Sheridan Computers @sheridan.co.uk · 04/02/2026

isc2kea - OPNsense ISC DHCP to Kea/dnsmasq migration tool. Built to make the ISC DHCP deprecation less painful. Still early days, but working well in real configs so far. If you’re running OPNsense, feedback/testing welcome. #OPNsense #OpenSource #FreeBSD #Firewalls github.com/sheridans/is...

GitHub - sheridans/isc2kea

Contribute to sheridans/isc2kea development by creating an account on GitHub.

Sheridan Computers @sheridan.co.uk · 31/01/2026

Extra cool Franco (@opnsense.org dev) dropped in, and even better that we caught the missing Common Ports issue live on stream for him :) Thanks to everyone who joined live, ~50 concurrent viewers for a live #OPNsense upgrade is honestly awesome! #opensource #firewalls #youtube #livestreaming

Sheridan Computers @sheridan.co.uk · 31/01/2026

Going live to look at @opnsense 26.1 #opnsense #live #firewalls #opensource www.youtube.com/live/bFyAZqy...

Live OPNsense 26.1 Upgrade – Best Case & Worst Case Scenarios

YouTube video by Sheridan Computers

Sheridan Computers @sheridan.co.uk · 29/01/2026

OPNsense 26.1 is out, heads-up that this release includes major internal changes to firewall and NAT rule handling, read the release notes on this one first & don't forget to take a snapshot. #opnsense #firewalls #opensource youtu.be/cVryJ8enTBI

OPNsense 26.1: What You Need to Know Before You Upgrade

YouTube video by Sheridan Computers

Sheridan Computers @sheridan.co.uk · 23/01/2026

I’ve published a full guide with video on setting up PPPoE on modern OPNsense (25.1+), including the new Point-to-Point device method, wizard setup, and VLAN scenarios. Want to replace your BT Fibre modem? Now's your chance. #opnsense #opensource #firewalls #freebsd @opnsense.org

Sheridan Computers @sheridan.co.uk · 21/01/2026

New video: Adding threat intelligence to OPNsense using Q-Feeds to block known malicious infrastructure. Setup + config steps here 👇 🔗 youtu.be/RYEizNBE9Y0 #OPNsense #ThreatIntel #CyberSecurity

Secure OPNsense Firewall Against Modern Threats with Q-Feeds

YouTube video by Sheridan Computers

Reposted by Sheridan Computers

OPNsense @opnsense.org · 19/01/2026

Please take note of hotfix 25.7.11_2 if you were already running 25.7.11(_1), for more details see forum.opnsense.org/index.php?to...

Sheridan Computers @sheridan.co.uk · 17/01/2026

For those that prefer a write-up: sheridancomputers.com/blog/view/ne... #opnsense #opensource #firewalls

sheridancomputers.com

OPNsense 25.7.11: Why This “Minor” Update Matters More Than It Looks

OPNsense 25.7.11: Why This “Minor” Update Matters More Than It Looks

Sheridan Computers @sheridan.co.uk · 16/01/2026

New video up on OPNsense 25.7.11 👋 Looks like a small patch, it’s actually setting the stage for big changes in 26.1 (DHCP, host discovery, IPv6 fixes, security updates). If you’re running @opnsense.org at home or work, this one’s worth a few minutes. 🎥 youtu.be/Iy6JplKRjH4 #opnsense #OpenSource

OPNsense 25.7.11: BIG CHANGES Ahead in 26.1with DHCP, IPv6

YouTube video by Sheridan Computers

Reposted by Sheridan Computers

OPNsense @opnsense.org · 16/01/2026

CALL FOR TESTING: IPv6 improvements!

forum.opnsense.org

CALL FOR TESTING: IPv6 improvements!

CALL FOR TESTING: IPv6 improvements!

Sheridan Computers @sheridan.co.uk · 14/01/2026

I’ve published a new video walking through how I install and secure #FreeBSD on a #Hetzner server. Hetzner doesn’t provide an initial FreeBSD image as a choice of operating systems to install, but there is an easy work around. Includes pf+ssh hardening. #OpenSource youtu.be/I_yVW1h5jgw

How I Installed & Secured FreeBSD on Hetzner

YouTube video by Sheridan Computers

Sheridan Computers @sheridan.co.uk · 23/12/2025

After real-world use, it’s clear this isn’t an all-in-one mini PC. Not a great NAS, not an efficient router, and not really a desktop replacement. It does however make sense as a compact Proxmox / virtualization node with external storage. youtu.be/e1JDlcW8DeA #minipc #proxmox #notanas

Minisforum MS-01 Mini PC: Is It Really Worth Buying?

YouTube video by Sheridan Computers

Sheridan Computers @sheridan.co.uk · 19/12/2025

OPNsense 25.7.10 release, more on that FreeBasD IPv6 security advisory, plus changes, improvements, and fixes: #OPNsense #OpenSource #FreeBSD #firewalls youtu.be/zM2L-3QhXBk

OPNsense 25.7.10 Released & Fixes Critical FreeBSD Flaw!

YouTube video by Sheridan Computers

Sheridan Computers @sheridan.co.uk · 19/12/2025

pfSense+ and pfSense vulnerable to FreeBSD CVE-2025-14558. Info, recommendated Netgate actions, and how to: youtu.be/Vqy6o_tY4Qs #pfSense #pfSensePlus #FreeBSD #Firewalls #CVE

New pfSense Bug Could Let Hackers In! Do this NOW

YouTube video by Sheridan Computers

Sheridan Computers @sheridan.co.uk · 16/12/2025

By popular request, how to use @opnsense.org with Mullvad... youtu.be/toB_9F-VTVo #OPNsense #OpenSource #Firewalls #FreeBSD #VPN #Mullvad

OPNsense Mullvad WireGuard Setup. Complete Step-by-Step Guide

YouTube video by Sheridan Computers

Sheridan Computers @sheridan.co.uk · 12/12/2025

Netgate has released pfSense Plus 25.11, bringing a set of updates and changes that administrators should review carefully before upgrading. #pfSense #pfSensePlus #Netgate #Firewalls #Networking youtu.be/_dLX2HSQeIc

pfSense Plus 25.11 RELEASED! Should You UPGRADE Now?

YouTube video by Sheridan Computers

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Sheridan Computers @sheridan.co.uk · 11/12/2025

OPNsense 25.7.9 Released: Unbound Blocklist Fixes, Tailscale Plugin 1.3 & More... #OPNsense #OpenSource #Firewalls #FreeBSD youtu.be/hvn_0gWRIvI

OPNSense 25.7.9 Released, What Changed?

YouTube video by Sheridan Computers

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Reposted by Sheridan Computers

FreeBSD Foundation @freebsdfoundation.bsky.social · 02/12/2025

FreeBSD 15.0 Now Available The FreeBSD Project has announced the availability of FreeBSD 15.0-RELEASE, introducing enhanced hardware support, improved security features, and key updates across the base system. We encourage you to review the release notes and upgrade guidance Read: buff.ly/7vbY8oB

Sheridan Computers @sheridan.co.uk · 27/11/2025

OPNsense 25.7.8 update dropped yesterday, here's an overview of what's fixed, what's changed, and what's new. #OPNsense #FreeBSD #OpenSource #Firewalls #Cybersecurity youtu.be/1Jop4u8Gnc4?...

OPNsense 25.7.8 Just Landed — There’s a Nice Surprise Inside!

YouTube video by Sheridan Computers

Sheridan Computers @sheridan.co.uk · 15/11/2025

Before we install TrueNAS on a UGREEN NAS, we should probably backup the UGOS image should we want to restore it later. It's not available to download, let's get it right #UGREEN #TRUENAS #UGREENNAS youtu.be/CEs9ku1ECBo

Backup your original GREEN NAS UGOS with Clonezilla (Free)

YouTube video by Sheridan Computers

Sheridan Computers @sheridan.co.uk · 14/11/2025

This is an older video, still a good watch for anyone running an IT business. #ITSupport #ITBusiness #MSP youtu.be/QfFaATzaITY

20 Years Running an IT Business – What We Wish We Knew Sooner

YouTube video by Sheridan Computers

Sheridan Computers @sheridan.co.uk · 13/11/2025

Tested the new if_pppoe driver in pfSense Plus (open-source firewall). Ran fast[dot]com, an ISO download, and a VPN transfer. My line is only 1 GbE, but the results are in: youtu.be/0rNYjXCO70E #pfSense #FreeBSD #PPPoE #Networking

Is the New pfSense PPPoE Driver Much Faster? Lower CPU Usage?

YouTube video by Sheridan Computers

Sheridan Computers @sheridan.co.uk · 12/11/2025

With pfSense Plus 25.11 on the horizon, if you haven't yet upgraded to 25.07, now's the time. #pfsense #smallbusiness #freebsd #firewalls youtu.be/s1mi6-fgeq4

pfSense Plus 25.07 - Is now the right time to upgrade?

YouTube video by Sheridan Computers

Sheridan Computers @sheridan.co.uk · 11/11/2025

pfSense CE (Community Edition) v2.8.1 was released back in September. Happy to report after a few weeks of testing we haven't run into any issues. youtu.be/kxxdI4OJop8 #pfSense #FreeBSD #Firewalls

pfSense 2.8.1 Released: What’s New and Why You Should Update

YouTube video by Sheridan Computers

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Sheridan Computers @sheridan.co.uk · 09/11/2025

The complete guide to setting up @tailscale.com on @opnsense.org ✅️ Access the UI from your tailnet ✅️ OPNsense as an exit node ✅️ Accessing OPNsense subnets from your tailnet ✅️ SSH access to OPNsensw from your tailnet ✅️ Firewall rules explained #OPNsense #Tailscale youtu.be/iUKDaSmAP94

OPNsense Tailscale Ultimate Guide & Surprising SSH info!

YouTube video by Sheridan Computers

Sheridan Computers @sheridan.co.uk · 07/11/2025

Here's an overview of the latest @opnsense.org release (25.7.7). youtu.be/CRVMmzSxbYY #OPNsense #OpenSource #Firewalls #FreeBSD

OPNsense 25.7.7: Security Fixes, Live Log & New Features

YouTube video by Sheridan Computers