Ravi Sankar: Security

How to block USB based storage devices in Windows XP

Sun, 16 Dec 2007 19:16:20 GMT

I keep getting this question from many people on how to block USB storage devices in Windows XP. Here is the solution, may be not as smart as the group policy based solution in Vista.

Technorati Tags: Disable USB

8 Ways to Stop Ninjas

Sat, 28 Jul 2007 04:06:15 GMT

Very funny! Watch this site www.easyeasier.com

Technorati Tags: Security

Windows is the most secure operating system - Symantec

Sat, 24 Mar 2007 05:33:50 GMT

Windows was considered to be a less secure than other operating systems by many people in the IT industry. But this perception is changing. Microsoft has done a tremendous job in increasing the security of its products in the recent past. A recent report by Symantec (no friend of Microsoft) says that Windows has fewer vulnerabilities than its other counterparts. To read more click here.

Technorati Tags: Microsoft, Windows, Security, OS, Opearating System

Browsing from multiple subnets through ISA Server

Thu, 22 Mar 2007 16:33:17 GMT

The other day I was configuring ISA server 2006 to enable internet browsing. I created a new array level policy to enable DNS, HTTP and HTTPS traffic. Users were able to access the internet from the same subnet as ISA server. But users connecting from other subnets were not able to access the internet. So I checked the connectivity from the client to ISA server's network and VLAN settings. Everything was fine. Finally I checked the event log in ISA server and found that the ISA server is dropping the packets due to a suspected spoof attack. Why should requests coming from a different subnet be considered as spoof? This is because ISA server believes that requests coming from any network which does not have a direct route mentioned in its routing table are spoof. So what is the solution? Simple! Add a static route using the route add command.

Technorati Tags: ISA Server, browsing, different subnet, event ID 15108, spoof