George Chetcuti’s Blog

Last Updated on 26 Sept. 2014, Total: 552 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
22 Monitoring 26 Aug. 2014
174 News 23 Sept. 2014
94 Products 28 Aug. 2014
43 Security 26 Sept. 2014
5 Troubleshooting 2 May 2012
16 Virtualization 23 June 2014
  1. 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

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. Installing the Print Service Server Role in Windows Server 2008

    Print Services in Windows Server 2008 allows you to share printers on a network and consolidate print server and network printer management tasks by using the Print Management console. The Print Service role in Windows Server 2008 includes Server Manager and Print Management. To install the Print Services server role with the Print Server and Internet Printing role services follow... Read More

  10. Windows Server 2008 Printers commands

    Windows Server 2008 and Windows 7 include tools that help you manage printers from the command prompt using Visual Basic scripts. You can find these scripts in the Windows\System32\Printing_Admin_Scripts\en-US\ folder. Since these tools are Visual Basic scripts you need to run the cscript command and pass the full path to the script file as the first parameter. Additional parameters can... Read More

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