Author: admin

Slow logging into domain

admin

When you are facing slow logons into domain and you also get events 1030 and 1006 you need to look into your network. By default Kerberos uses UDP packets to communicate. You need to force Kerberos to use TCP instead of UDP by changing registry key:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Lsa\ Kerberos\Parameters

If it doesn’t exists just create it :)

Create DWORD key called MaxPacketSize and set it to value 1.

For more infor there is official KB  http://support.microsoft.com/kb/244474/en-us

The Philosophy of System Administration

admin

Although the specifics of being a system administrator may change from platform to platform, there are underlying themes that do not. These themes make up the philosophy of system administration.

 The themes are:

Enabling Firewall audit logging in windows

admin

In this article you can see how to enable audit logging for Windows Firewall with Advanced Security.

Windows Firewall with Advanced Security can log firewall activity such as dropped packets or successful connections. By default the firewall log is: %windir%\system32\logfiles\firewall\pfirewall.log

You can configure firewall logging by using Group Policy if desired. But what if you want to collect more detailed logging of firewall activity such as kernel mode connections/drops and other filtering activity? You can do this by enabling Windows Filtering Platform (WFP) audit logging as follows:

Auditpol /set /category:”System” /SubCategory:”Filtering Platform Packet Drop” /success:enable /failure:enable

Auditpol /set /category:”System” /SubCategory:”Filtering Platform Connection” /success:enable /failure:enable

Note that this form of logging may be very verbose, so be careful when enabling this on a computer in your production environment.

Optimizing vSphere 5 Performance

admin

A few days ago I read an article that was interesting.May be faced with reduced performance When you run the virtualization platform.

Here I give you some tips in this regard:

Optimizing vSphere Performance: Why and How

1. Use capacity analysis tools
2. Right-size virtual machines
3. Replace your hardware
4. Utilize Storage I/O Control (SIOC) and Storage DRS (SDRS)
5. Reduce VM snapshots
6. Consider SSD
7. Utilize Distributed Resource Scheduler (DRS)
8. Run the latest version of vSphere
9. Use the latest VM virtual hardware version
10. Install VMware Tools in all virtual machines

  

tip in server 2012

admin

Unfortunately there is a problem when you try to add .Net Framework 3.51 to Windows Server 2012 using Server Manager!

In order to fix that issue and get .Net Framework 3.51 installed issue following command from Command Prompt:

dism /online /enable-feature /all /featurename:NetFX3 /source:x:\sources\sxs

 

In order to assign static IPv4 address to Windows Server 2012 Core using power shell use:

New-NetIPAddress -IPAddress 192.168.1.10 -InterfaceAlias “Ethernet” -DefaultGateway 192.168.1.1 -AddressFamily IPv4 -PrefixLength

vSphere 5.1 What’s New

admin

VMware announced a new version of VMware vSphere 5.1 at VMworld USA. I created a nice summup of all new features to give you nive clean overview

if you are going to upgrade vsphere 5.1 please read this links and notic changes them

 

vSphere 5.1 What’s New