Categories
Vulnerability

How to test Heartbleed Bug

What is SSL Heartbleed Bug in simple English?

Basically it is a program bug/vulnerability in the SSL/TLS encryption that is widely use by most of the Internet applications such as website, VPN, email, etc. This allow the attacker to read/steal the your communication information. For more detail, you can check out http://heartbleed.com/ and http://www.kb.cert.org/vuls/id/720951

SSL heartbleed bug

How to test Heartbleed Bug

Below are some of the useful links that allow you to check whether your HTTPS website is vulnerable to Heartbleed bug

Qualys SSL Labs: https://www.ssllabs.com/ssltest/

Heartbleed test: http://filippo.io/Heartbleed/

Critical Watch Heartbleed Tester: http://heartbleed.criticalwatch.com/

LastPass Heartbleed bug test: https://lastpass.com/heartbleed/

Heartbleed checker: http://possible.lv/tools/hb/

 

Categories
Windows

Computer Cloning with similar SID might cause network problem

Computer Cloning with similar SID might cause network problem

Using Disk Image Cloning (e.g. Symantec Ghost) for mass desktop rollout/deployment can significantly saves hours of work and hassle over other rollout method but it might cause major network problem if every cloned system has an identical Computer Security Identifier (SID). This fact compromises security in Workgroup environments, and removable media security can also be compromised in networks with multiple identical computer SIDs.

 

1. Un-join from Windows Domain or Active Directory
2. Restart computer
3. Download http://download.sysinternals.com/Files/NewSID.zip and extract into local computer.
4. Run newsid.exe as shown in screenshot below to generate new SID

5. After computer restarted, join the computer back to Windows Domain or Active Directory

Command:

Alternatively, you can run the command below with system prompt:

newsid /a [newname]

References and Resources:

http://technet.microsoft.com/en-us/sysinternals/bb897418.aspx

http://support.microsoft.com/default.aspx?scid=kb;EN-US;314828