The ramblings of a computer geek
After an update Microsoft Exchange 2016 – Security Update For Exchange Server 2016 CU22 (KB5015322), following the upgrade the following appeared: The Exchange server appeared to operating fine, mail flow was fine, the DAG operating as expected, users who are using ActiveSync, Exchange Anywhere or EWS all appeared to have no problems. However using OWA […]
More...Moniting with SNMPv3 is much like monitoring with SNMPv2 or 1 for that matter, except SNMPv3 offers greater security options. SNMPv1 or v2 offers very little security being based on a plain text community string, of course on the monitored device you can restrict which hosts are allowed to connect to your monitored device via […]
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NMAP (Network Mapper) is a great tool for scanning your network to identify active hosts and the open/available services they have. NMAP provides quite a granular output for the port states, six in-fact, rather than just an open and closed. I’ll give a brief overview of the three main ones you’ll come across: Open, Closed […]
More...If you wish to test the connectivity through from your VMware ESXi host through to its storage when using iSCSI you can perform steps such as the following described within: https://kb.vmware.com/s/article/1003728 Firstly run this to get your list of vmKernel ports: Assuming you’ve labelled the vmKernel ports you use for iSCSI with something sensible you […]
More...VMware have recommended that upgrading from Distributed vSwitch version: 6.0.0 to 6.5.0 or 6.6.0 should be done as a side by side migration rather than an in place upgrade due to the risk of outage when performing the upgrade in place, this is detailed in the following VMware article: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.networking.doc/GUID-330A0689-574A-4589-9462-14CA03F3F2F4.html. It is understood that vDS […]
More...I wanted to make a page that could be easily exported to PDF without any cruft around the edges, such as the title or footers etc. You can do this at the whole Confluence level or at the Space level, sadly not at the page level it would seem. In my case I did it […]
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Information Security has a number of foundational concepts, such as the Confidentiality, Integrity and Availability of information, information assets and services. In this article we’ll explore four key concepts that are good to understand to assist you in building and configuring secure systems and therefore protecting and improving the Confidentiality, Integrity and Availability of your […]
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