Linux SSH Key Login
Linux SSH Key KB ID 0001928 Problem Having a comms background, SSH connecting to something is a procedure I’m very familiar with. You SSH to something, it asks you for a username and password, and providing that they are correct, you’re connected. Also, because the client and server negotiate the encryption of the password, the information sent over SSH is protected from being sniffed or captured. Which is great until an...
VMware Alternatives
VMware Alternatives KB ID 0001927 Problem With uncertainty surrounding VMware’s future, many IT teams are actively reassessing their virtualisation strategies. On platforms like Spiceworks and Reddit, professionals are sharing their experiences and recommendations as they explore alternatives. VMware Alternatives What the Community Is Saying Proxmox VE is gaining serious traction. One user noted: “Already upskilling in Proxmox and...
Denial of Service & DDoS Attacks
DDoS KB ID 0001926 DDoS Problem If you’ve ever had a website grind to a halt or watched a critical service vanish mid-operation, chances are you’ve felt the sting of a Denial of Service (DoS) attack. In today’s hyper-connected world, Distributed Denial of Service (DDoS) attacks are not just a nuisance, they’re a strategic weapon used to cripple infrastructure, extort businesses, and disrupt entire economies. Having spent three...
Cross Hypervisor Migrations Using Veeam
Cross Hypervisor Migrations KB ID 0001925 Problem At a time where a large slice of the community is moving away from VMware, my employer finds itself with a situation where it needs to migrate TO VMware (from Openstack KVM. We need to retire this platform and the customers we have on it, we are hoping will move to our VMware/NSX based IaaS platform. In recent years we have faced challenges with potential customers who were on...
Veeam Invalid NFS Path
Invalid NFS Path KB ID 0001924 Problem When trying to setup a Veeam repository that is an NFS Share, I got the following error. After about 35 minutes of trying different combinations and back slashes and forward slashes I gave up. Solution : Invalid NFS Path I knew I’d seen this before, and annoyingly I’d not written anything down! Turns out I’m old (and blind), the answer is staring me in the face. THERE SHOULD BE...
Exchange Update Failed
Exchange Update Failed KB ID 0001923 Problem While attempting to install an Exchange CU update, (CU15 for Exchange 2019), I got this error. Error: The following error was generated when “$error.Clear(); # # O15# 2844081 – Create PartnerApplication “Exchange Online” in DC and On-Premise # $exch = [Microsoft.Exchange.Data.Directory.SystemConfiguration.WellknownPartnerApplicationIdentifiers]::Exchange; $exchApp =...
Bulk Creating Users For Your Test Network
Bulk Creating Users KB ID 0000784 Problem Update Jul 2025: Feel free to use this Bulk-Create-AD-Users-Script (Just remeber to change the domain details in the “Global Variables’ Sections to give you 10o0 users, with sensible names addreeses etc. Having a test network, is great for both learning, and testing. I’ve got some major migrations coming up in the next few months, so I’m in the process of running up some new...
Upgrading to Exchange SE
Upgrading to Exchange SE KB ID 0001922 Problem With ‘On-Premises” version of Exchange support coming to an end, anyone wanting to retain a ‘non cloud’ versions of Exchange should be upgrading to Exchange SE. Exchange Version Mainstream End Date Extended End Date Support Status Exchange Server 2013 April 10, 2018 April 11, 2023 End of support Exchange Server 2016 October 13, 2020 October 14, 2025 In extended...
Microsoft Exchange Server Build Numbers
Exchange Server Build Numbers KB ID 0000344 Problem To find out what service pack and rollups have been applied to Microsoft Exchange you need to locate its “Build Number”. 2000/2003 2007 2010 Warning: After SP3 the build number does not update. To find your build number in Exchange 2010 (after SP3,) use the following command; exsetup | %{$_Fileversioninfo} 2019, 2016, and 2013 Find Exchange 2019 / 2016 and 2013 Build...
Cisco Simple GRE with IPSEC Tunnels
GRE with IPSEC KB ID 0000951 Problem I’ve spent years setting up VPN tunnels between firewalls. The only time I’ve ever dealt with GRE is for letting VPN client software though firewalls. GRE’s job is to ‘encapsulate’ other protocols and transport those protocols inside a virtual point to point link. Below is the topology, I’m going to use. The tunnel will run form Router R1 to Router R3, once...