George Chetcuti’s Blog

Last Updated on 22 July 2014, Total: 524 Blog Posts

With a career spanning more than 23 years in IT, George Chetcuti has hands-on experience on HP high-end UNIX setups, Windows high-availability clusters and cloud computing. He has overseen various network projects and managed IT departments. The aim of this blog is to address various network related issues and topics from networking concepts to hands-on tasks for the community of network administrators, where your comments and suggestions are always welcome. He also writes about Windows 7 in the little free time he has at www.windows7library.com.

9 Command-line 10 Sept. 2013
152 General 23 June 2014
37 Implementation 10 July 2014
20 Monitoring 19 May 2014
160 News 22 July 2014
92 Products 17 July 2014
33 Security 21 July 2014
5 Troubleshooting 2 May 2012
16 Virtualization 23 June 2014
  1. Windows Patch Management Considerations

    There are certain times when organizations decide not to deploy a software update solution and use Windows native functionality – Microsoft Update, as their main solution. This may be the best approach when organizations have dispersed offices around the globe with a small number of standalone computers. It is simpler to enable automatic updates on these clients' computers rather than... Read More

  2. Citrix acquisition of Cloud.com

    On July 12th 2011, Citrix announced that it has completed the acquisition of Cloud.com. Cloud.com is a major vendor in software platforms for Cloud computing and their main solution, CloudStack is known to be a simple and a very cost-effective 'open by design' solution. Citrix Systems is a major provider of virtual computing with a large spectrum of products -... Read More

  3. Windows Firewall Logs

    Troubleshooting network problems can be quite daunting at times and a recommended good practice when troubleshooting Windows Firewalls is to enable the native logs. If you need to verify whether a firewall rule is blocking or allowing traffic, you should enable logging, re-create the problem and then examine the log files. By default, Windows Firewall saves log entries in %SystemRoot%\System32\LogFiles\Firewall\Pfirewall.log... Read More

  4. IPv6 Unique Local Addresses

    IPv6 Unique Local addresses (ULAs) are equivalent of private addresses in IPv4 that is, 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. These addresses are routable between subnets on a private network but are not routable on the public Internet. They allow you to create complex internal networks without having public address space assigned. ULAs begin with the prefix "fd" and their structure is... Read More

  5. Understanding IPv6 Link-local Addresses Zone IDs

    As we have noted in a previous post all IPv6 Link-local Addresses (LLA) share the same network identifier (fe80::) hence, you can cannot determine which interface an LLA is bound to, if the computer has multiple network adapters connected to different network segments. In fact, it distinguishes the networks by using a numeric zone ID, following a percent sign after... Read More

  6. IPv6 Link-Local Addresses

    Pv6 Link-Local Addresses (LLAs) are similar to APIPA (Automatic Private IP Addressing) addresses in Windows IPv4 based systems. APIPA addresses are self-configured, non-routable addresses in the range of 169.254.0.0/16. But unlike APIPA addresses, LLA addresses remain assigned to an interface as a secondary address even after a routable address is obtained for that interface. An LLA address always begins with... Read More

  7. IPv6 Global Address Structure

    IPv6 global addresses are equivalent to Public IP addresses in IPv4 and are globally reachable on the IPv6 portion of the Internet. The global IPv6 address structure is divided into three parts, the Public and Private routing part, and the host identification within a LAN. These parts add up to 128 bits which are structured as follows: The first 48... Read More

  8. Deploying Printers using Group Policy

    To deploy shared printers to multiple client computers in a domain environment, the fastest method is using a Group Policy. Follow these steps: In Server Manager, select Roles\Print and Document Services\Print Management\Print Servers\<Server Name>\Printers and in the details pane, right-click the printer, and then choose Deploy with Group Policy. - if the Print and Document Services node is not available,... Read More

  9. IPv6 Technologies

    Organizations are looking into the details of IPv6 and see if they are ready to shift from IPv4. For instance, IPv6 has a new header format, and hence, IPv4 routers that have not been designed to support IPv6 cannot parse the fields in the IPv6 header. On the other hand, Layer 2 protocols are not affected where internal switches and... Read More

  10. Zoho Docs

    Zoho's Document Management online system has a new user interface! The new UI is more user friendly designed on simple and intuitive concepts that gives users improved navigation on tasks that they do on regular basis. It's a keep it simple while effective approach which reminds us of Google's style in doing things! The sleeker UI was released in May... Read More

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