Willing and not afraid to challenge the status quo.

Resolver source port behaviour checker

written by Ruan
at 8:28 am
on July 11, 2008
in Security, Technology, Tellicommunications
no comments

In light of the CERT VU#800113 announcement, DNS-OARC has created a special DNS name and server that you can query to determine if your resolver is at risk.

Usage:
dig @4.2.2.3 +short porttest.dns-oarc.net TXT

Replace 4.2.2.3 with your resolvers address. The result will either return FAIR, GOOD or POOR based on the observed deviation of the source ports.

Full details of DNS-OARC test can be seen here.


Multiple DNS implementations vulnerable to cache poisoning

written by Ruan
at 10:44 am
on July 9, 2008
in Security, Technology, Tellicommunications
no comments

Vulnerability Note VU#800113

From: https://www.kb.cert.org/CERT_WEB%5Cservices%5Cvul-notes.nsf/id/800113

Quote:

An attacker with the ability to conduct a successful cache poisoning attack can cause a nameserver’s clients to contact the incorrect, and possibly malicious, hosts for particular services. Consequently, web traffic, email, and other important network data can be redirected to systems under the attacker’s control.

At least 30 vendors appear to be known vulnerable. This is a significant number. Start contacting your vendors!


20 products that have changed networking

written by Ruan
at 10:15 am
on March 28, 2006
in Data Centers, Security, Technology, Tellicommunications
no comments

Network World piece about products that have changed networking over the last twenty years.

From the article:

“SendMail 1998 – Sendmail was key to the e-mail revolution because it was how everyone got up and running with e-mail communications over the Internet. Eric Allman wrote the original version of this open source mail-transfer agent while he was at the University of California at Berkeley in 1979. He stopped development on it in 1982, however, and didn’t revisit it until 1990. In 1998 he founded SendMail to sell the software’s first commercial version, the SendMail switch.”

Great mentions of Apache, Netscape Navigator and the iconic Motorola Startac series phones.


Opera web browser on the Nintendo DS

written by Ruan
at 9:12 am
on February 17, 2006
in Tellicommunications
no comments

Opera has announced that they and Nintendo are going in together to create a web browser for the DS. The browser, based on Opera’s core engine, will take advantage of the system’s two screens and the touchscreen to provide on-the-go portable internet access.

From the article:

‘Within just five seconds of turning on the system, the Nintendo DS is already fully operational. This makes it the ideal device to enable people to swiftly obtain the latest information from the internet, wherever they are.’


 
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about this

Ruan is a resolute technophile that is currently devoted to the professional practice of Information Technology Management. In his free time Ruan pursues various interests including the study of Information Security practices and the exploration of visual culture through contemporary photography and communication design.


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