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IPv6: enabled or disabled?

17 August 2024
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Reading Time: 4 minutes

IPv4 (Internet Protocol version 4) is a widely used protocol for network communication and is a core component of the TCP/IP stack. But it has some limits, one is the limit in terms of available addresses, expecially if we are talking about public IP.

IPv6 (Internet Protocol version 6) was design to resolve all the limitation of IPv4. IPv6 is designated by the Internet Engineering Task Force (IETF) as the successor to IPv4 providing the following benefits:

  • Increased address length. The increased address space resolves the problem of address exhaustion and eliminates the need for network address translation. IPv6 uses 128-bit addresses compared with the 32-bit addresses used by IPv4.
  • Ability for improved address autoconfiguration of nodes.
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Highlights, vDesign, vNetworking, vSecurity , ,

Critical vulnerability in IPv6 protocol on Windows systems

16 August 2024
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Microsoft warned customers to patch a critical TCP/IP remote code execution (RCE) vulnerability that impacts all Windows systems (client and server) using IPv6 stack. The vulnerability is identified as CVE-2024-38063 and it’s a 9.8-out-of-10 on the CVSS severity scale.

Note that, on Windows systems the IPv6 is enabled by default and, in the past, Microsoft itself has not recommend disabling IPV6:

” We do not recommend that you disable IPv6 or its components, or some Windows components may not function.” (https://support.microsoft.com/en-us/kb/929852)

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Microsoft, vNetworking, vSecurity

DCIG Report: top 5 SMB/Edge VMware vSphere alternatives

15 August 2024
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DCIG has just published of the 2024-25 DCIG TOP 5 SMB/Edge VMware vSphere Alternatives Report. This report provides guidance on the DCIG TOP 5 VMware vSphere alternative solutions that smaller organizations should consider as they address Broadcom’s recent changes to VMware’s software licensing.

SMBs and organizations with edge environments possess different requirements for a VMware vSphere alternative than enterprises. They still need a vSphere alternative to offer specific core features. These include high-availability, product reliability, software-defined storage, software-defined networking, and the ability to host Windows and Linux guest OSes. They also often look to the provider to deliver education, training, and 24x7x365 technical support.

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vProducts ,

Omnissa Horizon compatibility with VMware vSphere

15 August 2024
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Before the decision of  Broadcom to sell the VMware’s EUC Division, the compatibility between (VMware) Horizon and VMware vSphere was simply included in the Product Interoperability Matrix.

But now, of course this VMware site is no more updated because does not include recent versions of both products:

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Omnissa, VMware

Book: VMware vSphere Metrics, 4th edition

14 August 2024
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VMware vSphere ships with many metrics and properties. If we take object by object, and document metrics by metrics, it will be both dry and theoretical. You will be disappointed as it does not explain how your real world problems are solved. You’re not in the business of collecting metric.

Iwan ‘e1’ Rahabok made an impressive book on VMware vSphere Metrics and now is at its 4th edition!

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General, VMware

Veeam Backup & Replication support for VMware vSphere 8.0U3

13 August 2024
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Like every hardware and software components, before apply a VMware vSphere upgrade or update you have to check all compatibility aspects. One is related to the backup software that can be critical because you may loose the capability to perform backup and/or restore.

Of course this apply also to “minor” update, like vSphere 8.0U3.

For Veeam Backup & Replication there is a specific Veeam KB (KB 2443) that provides information about compatibility between VMware vSphere and Veeam Backup & Replication.

And finally, some weeks after ESXi 8.0.3 become GA, there is an official support for vSphere 8.0U3 starting with Veeam Backup & Replication 12.1.2 (build 12.1.2.172)!

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vBackup, Veeam, VMware ,

Backup scan with Veeam Backup & Replication

6 August 2024
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Backup content can be safe during the backup, but maybe there are some security threads that are not yet been identify (like 0-day attack) or maybe the backup data are corrupoted (like guest filesystem corruption).

SureBackup is the Veeam technology that allows you to test machines backups and check if you can recover data from them. You can verify any restore point of a backed-up machine.

For SureBackup, Veeam Backup & Replication uses a regular image-based backup. SureBackup job can operate in two different recovery verification modes:

  • Full recoverability testing (the traditional virtual lab/data lab approach): Veeam Backup & Replication runs machines in an isolated environment directly from backup and performs tests against live applications.This mode ensures recoverability of your production workloads in a disaster recovery event.
  • Backup verification and content scan only (introduced in Veeam v12): Veeam Backup & Replication performs backup integrity check and its content analysis to detect traces of malware or any other unwanted or sensitive data. These tests do not require setting up a virtual lab or an application group.
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Veeam, vSecurity none
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