Network Diary: Expect the Unexpected with Social Media

Can't wait to share good microblog links.. think I will log on to Twitter and share. Oh No!! ...
"Twitter Ongoing denial-of-service attack. We are defending against a denial-of-service attack, and will update status again shortly." http://status.twitter.com/

Well, perhaps I will check out Techfuga.com.
Oh My!!! " Techfuga.com offline for months to plan for new platform site Joao"
http://www.techcrunch.com/2009/07/06/techfuga-is-taking-a-couple-of-months-off-delivering-breaking-tech-news/

Hmm.. guess I will check out my favorite networking site Cisco.com.
"Cisco.com experienced an outage of over two hours on Tuesday " http://www.networkworld.com/community/node/44133

Right then, maybe I will check out firefox e-store.
" Mozilla shuts Firefox e-store after security breach"
http://www.networkworld.com/news/2009/080509-mozilla-shuts-firefox-e-store-after.html

Right then.. guess it seems Murphy's Law is in full play this week.
If it can happen, it will happen.

Cyberciege :Can you keep the network alive?

A nicely prepared security video game tool to teach network security concepts.

http://cisr.nps.edu/cyberciege/index.htm

Free online Linux Course: live CD with movies and network commands

Free Linux Course live CD with movies and network commands  for those starting out in Linux.

http://freeloaderlinux.sourceforge.net/movies/index.html

IPv6 with VNC and VNC Reflector security

Going thru my study notes and reviewing information about using Windows and Linux VNC applications with IPv6

1)Using IPv6 with VNC Enterprise Edition 4.1.7 / VNC Personal Edition 4.1.2
http://www.realvnc.com/products/enterprise/4.1/ipv6.html

2)TightVNC over IPv6 is an enhanced version of VNC downloads
http://jungla.dit.upm.es/~acosta/paginas/vncIPv6.html

3)VNC Reflector is a specialized VNC server which acts as a proxy sitting between real VNC server (a host) and a number of VNC clients (Security)
http://sourceforge.net/projects/vnc-reflector/

Have fun!

Simulation Data Security and Anti Money Laundering Game

PlayGenSeriousGame  has learning games that dive into the data security underground.
The games are engaging, realistic simulations for training, learning and assessment using current gaming technology.
Enjoy!

Electronic Light Puzzle Game

A nice thinking game!  My lowest score 57.  Confuse Electronic Light Puzzle Game

Linux Network Code: Big Endian and Little Endian Snack

The TCP/IP protocol is "Big Endian"processing. How does a "little endian" processor read the packets sent from "Big Endian"?

Little Endian reads CPU register value (backwards or bottom-to-top)

Big Endian reads CPU register value (forwards or top-to-botom)

This means Byte Order "functions" are needed to switch (convert) between big endian and little endian.

Linux, BSD and Solaris use the following functions:

hton = host-to-network
ntoh = network-to-host

s = short = 16 bit integer
l = long = 32 bit integer
ll= double = 64 bit integer

Function Code Sample:

htons()
htonl()
htonll()

ntohs()
ntohl()
ntohll()


This means if the routing processor is "Big endian" and the sending or receiving processing code is "Little Endian" The above byte order "functions" are required to switch (convert) between Big Endian and Little Endian. If no Byte Order "Function" is present then it will arrive as unreadable garbage to the processor.


Hope you enjoyed this Linux Network Code snack!