If you need to change ESX and Vcenter DNS you can use below articles:
https://vbrainstorm.com/change-host-hostname-and-dns-in-vsphere-6-7-in-vcenter/
http://michaelstoica.com/changing-vcenter-servicer-appliance-vcsa-dns-server/
Vmware - How to change DNS on ESX hosts and Vcenter
Citrix - Netscaler backups approaches
In Citrix environments an important components is NetScaler.
It permit remote connection without using VPN clients.
There are several corrects VM backups ways.
Below article well explain how to:
Freeware - Adobe connect
Today I would like to indicate Abobe connect, software suite for web conferencing, presentation, desktop sharing and remote training.
Meeting rooms are organized into "pods" with a specific role (note, whiteboard and so on)
Here they are major capabilities:
Here it is video presentation and official Adobe link
https://www.adobe.com/products/adobeconnect.html
https://video.tv.adobe.com/v/27698?autoplay=true
And Wikipedia explanation:
https://en.wikipedia.org/wiki/Adobe_Connect
Meeting rooms are organized into "pods" with a specific role (note, whiteboard and so on)
Here they are major capabilities:
- VOIP
- Mobile app
- HTML 5 clients.
- Meeting recording.
Here it is video presentation and official Adobe link
https://www.adobe.com/products/adobeconnect.html
https://video.tv.adobe.com/v/27698?autoplay=true
And Wikipedia explanation:
https://en.wikipedia.org/wiki/Adobe_Connect
Office 365 - TLS 1.0 and 1.1 no longer supported from 2021, 11Th January #Windows 7 #Outlook 2010 #Windows 2008 R2 server
Microsoft announced (MC229914) that TLS 1.0 and 1.1 will no longer be supported, from Exchange Online beginning January 11th 2021.
This change will impact endpoints too.
Final Notice for disabling of TLS1.0 and TLS 1.1 Support for Exchange Online Mail Flow
We will no longer support TLS 1.0 and TLS 1.1 from Exchange Online mail flow endpoints beginning January 11th 2021. As those versions of TLS are already retired (most recently communicated in MC218794, July '20), Exchange Online customers and their partners should already be using TLS1.2 to protect SMTP connections between their email servers or devices and Exchange Online.
https://admin.microsoft.com/AdminPortal/Home?ref=MessageCenter&id=MC229914
Client side you should verify that devices are connecting to Exchange Online using TLS 1.2
About Outlook 2010/Windows 7/Windows 2008 R2 be aware that TLS 1.2 is not enabled by default, these are register modifies that you should apply ( to override problem)
Update to enable TLS 1.1 and TLS 1.2 as default secure protocols in WinHTTP in Windows
More details can be found at below blog article:
Security - TLS 1.0 & 1.1 End of Life/support for several products
https://www.alessandromazzanti.com/2020/03/security-tls-10-11-end-of-lifesupport.html
BTW be aware about this other deadline (2021, 1th November):
Effective November 1, 2021, the following versions of Outlook for Windows, as part of Office and Microsoft 365 Apps, will not be able to connect with Office 365 and Microsoft 365 services.
[Other related articles]
https://jaapwesselius.com/2018/09/23/outlook-2010-disconnected-with-tls-1-2/
https://docs.microsoft.com/en-us/dotnet/framework/network-programming/tls#security-updates
Server - DHCP Relay #Network #Windows Server side
During these months we worked on Network redisign project and ESX server substitution.
We had two projects convergence due to entirely infrastructure renewal (making zero point for our company).
About DHCP relay, that is the ability to lease IP to different VLANs here it the theoretically and operative part:
- On your L3 router o switch you must create VLAN interface with this row
ip address helper Server_IP
In this case you are pointing all DHCP requesta to Server_IP
https://blog.udemy.com/ip-helper-address/
https://www.ciscopress.com/articles/article.asp?p=330807&seqNum=9 - Configure DHCP Server (that usually is on another Server VLAN) to accept DHCP IP requests.
The Key point is to indicate, in below window, VLAN gateway IP.
This information is important to understand, dhcp server side, from which VLAN DHCP request is arriving from
http://gborgese.wikidot.com/dhcp-relay
https://www.itechguides.com/dhcp-relay-agent-configuration-in-windows-server-2016/
https://thesolving.com/server-room/how-to-configure-a-multiscope-dhcp-server-to-work-with-vlans-on-windows-server-2012/
Antivirus - Endpoint Console with error code a049001e - 'Deadlock detected while asynchronously scanning....
During these weeks, on Sophos Enterprise Console, we faced below error on several computers and servers:
Error code a049001e saying 'Deadlock detected while asynchronously scanning....
This issue was affecting clients and servers with Citrix installed (clients or server components):
Symptoms or Error
While login or launching a ICA session , UPM profile takes long time to login due Sophos Anti Virus
Solution
Created registry change to disable asynchronous Scanning for Sophos Anti Virus:
Instructions:
Under:
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Sophos\SavService\Application
Create a new REG_DWORD called: DisableAsyncScans with a value of: 1
DisableAsyncScans registry fix (https://support.citrix.com/article/CTX241246)
[original article]
Office 2010 - Support Ended (like Office 2016 for Mac)
Be aware about end of support for Office 2010 and Office 2016 for Mac. Microsoft will no longer provide technical support, bug fixes, or security updates for these products, at the same time organizations, that continue to use them, may face increased security risks (and compliance issues over time)
Here it is a Microsoft article with more details:
Tips - Event Viewer Error on Server Windows 2008 R2 #hotfix KB4503277
During these time period we faced below errors when we was trying to browse eventviewer
MMC has detected an error in a snap-in and will unload it
This problem occurred on Windows 2008 R2 server
MS Article https://support.microsoft.com/en-us/help/4508640/event-viewer-may-close-or-you-may-receive-an-error-when-using-custom-v suggest hotfix KB4503277 (Preview of Monthly Rollup for Windows 7 SP1 and Windows Server 2008 R2 SP1)
Futhermore was released newer hotfix versions:
2019-07 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4507449)
Microsoft - Microsoft Edge Browser: Security, Compatibility, and Update Management
Here it is an interesting video that give you an idea about Edge advantages, features and update management.
<iframe width="560" height="315" src="https://www.youtube.com/embed/uMmh_gNaM4I" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
Network - Iperf tool & Speed test
During this time period I had necessity to stress and measure MPLS network connectivity without using internet connectivity available on line.
In this case speed test or any other internet web site tool was not useful.
Solution was using Iperf in command line mode launching a server session in remote site and a client session on another site.
In this way there was possibility to stress network and measure relative performances.
Here they are some video examples:
http://www.iperfwindows.com/screencasts.html
In this case speed test or any other internet web site tool was not useful.
Solution was using Iperf in command line mode launching a server session in remote site and a client session on another site.
In this way there was possibility to stress network and measure relative performances.
Here they are some video examples:
http://www.iperfwindows.com/screencasts.html
Meanwhile I am taking note about a good website dedicated to test internet performances.
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