A few days ago, I have posted some ScreenOS basics on this blog. Today, it is time to take it one step further and to look at setting up and especially troubleshooting IPSec VPN's with Juniper Netscreen devices.

The Read more

ScreenOS Concepts & Terminology

The following document is based on ScreenOS v5.4.0r7.0

- Interface = connection to a specific subnet. An interface is assigned an IP address only if firewall is operating in L3 mode. Default interface names can Read more

Reset to factory defaults :

• connect console (9600/8/None/1, no flow control)
• take out power cable
• press mode button (at the front), hold it,  and put power cable back
• switch will go into recovery mode
• run :
  • flash_init
  • load_helper
• rename Read more

In this post, I will explain how to set up 2 or more Windows 2003 servers to use the Windows Server built-in NLB functionalities in order to provide high availability and network load balancing for IIS based SMTP services.

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Because some of my own applications required the ability to create random passwords, I decided to write a small dll that will allow me to implement the generation of random passwords in a fast and easy way.

You can Read more

Keywords : Wireshark Out Of Memory tcpdump statistics pcap

The story I'm about to tell may sound familiar to most of you. You've been asked to gather some bandwidth utilization statistics on one of your servers. You've installed Wireshark Read more

(a.k.a. PVE Exch2007 Rerouter manual)

Keywords : Exchange 2007 outbound SMTP relay redundancy SendConnector outgoing mail high availability

Microsoft Exchange 2007 allows you to consolidate your messaging infrastructure and host more users on one server. Combined with the introduction Read more

1. Manage Attachment behaviour

1.1. Outlook 2007

Although you probably have deployed an antivirus solution in your messaging infrastructure, by default, Outlook blocks access to certain attachments, even if they have been scanned or not. After all, Outlook doesn't Read more

According to Microsoft, Windows Server 2008 is the most secure Windows server version ever.

Windows 2008 does include many features that will help increase overall security of the OS, or assist you with securing AD, the network, etc. Most Read more

It is pretty easy to use data collected by Performance monitors in Counter objects within OpsMgr 2007. You can create graphs, create rules/monitors alerts, etc

But you can do the same with any type of information that can be Read more