Thursday, March 03, 2011

Configuring vnc on CentOS

It was a pain, as most of the latest linux distros come with out-of-box vnc support,
but I finally found a good reference on CentOS site:


To make your centOS server vnc ready, you just need to :
  1. Create your VNC users.
  2. Set your users' VNC passwords.
  3. Edit the server configuration.
  4. Customize xstartup scripts.
$ su -
$ useradd vncuser

$ cd .vnc
$ vncpasswd

$ vi /etc/sysconfig/vncservers
VNCSERVERS="1:vncuser" VNCSERVERARGS[1]="-geometry 800x600"
$/sbin/service vncserver start
$/sbin/service vncserver stop

$ cd .vnc
$ vi xstartup

Edit xstartup. The original should look like:

#!/bin/sh # Uncomment the following two lines for normal desktop: # unset SESSION_MANAGER # exec /etc/X11/xinit/xinitrc [ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup [ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources xsetroot -solid grey vncconfig -iconic & xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" & twm & 

Add the line indicated below to assure that an xterm is always present, and uncomment the two lines as directed if you wish to run the user's normal desktop window manager in the VNC. Note that in the likely reduced resolution and color depth of a VNC window the full desktop will be rather cramped and a look bit odd. If you do not uncomment the two lines you will get a gray speckled background to the VNC window.

#!/bin/sh # Add the following line to ensure you always have an xterm available. ( while true ; do xterm ; done ) & # Uncomment the following two lines for normal desktop: unset SESSION_MANAGER exec /etc/X11/xinit/xinitrc [ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup [ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources xsetroot -solid grey vncconfig -iconic & xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" & twm &

Start the vncserver as root.
$ /sbin/service vncserver start

and that's it ! Use vncviewer to connect ot it
$ vncviewer host_ip:1

Tuesday, August 31, 2010

The 20 Most Sought-After IT Skills - InsideTech.com

The 20 Most Sought-After IT Skills
- from InsideTech.com

Just go through this link .. this has good info for technology crazy software engineers

http://insidetech.monster.com/training/articles/2356-the-20-most-sought-after-it-skills?page=1

Fastest Rising Pay for Noncertified IT skills% change last 6 months% change last year
Network security management25.0%37.0%
Wireless network management (LANs, GSM)22.2%22.2%
Business intelligence20.0%33.3%
PHP20.0%20.0%
SAP MDM (Master Data Management)20.0%20.0%
Oracle DB / 8i/9i/10g/11i18.2%30.0%
SAP ERP18.0%na
NetWeaver BI (SAP BW)16.7%16.7%
SAN/Storage Area Net Networking14.3%23.1%
Oracle Workflow12.5%na


Fastest Rising Pay for Certified IT skills% change last 6 months% change last year
Certified Information Security Manager (CISM)27.3%33.0%
GIAC Security Expert (GSE)25.0%34.5%
Planet3 Certified Wireless Network Administrator (CWNA)20.0%20.0%
IT Certified Architect (ITCA/OpenGroup)20.0%20.0%
SAS Certified Advanced Programmer14.3%14.3%
Planet3 Certified Wireless Analysis Professional (CWAP)14.3%14.3%
Cisco Certified Network Professional (CCNP)14.3%14.3%
Planet3 Certified Wireless Security Prefessional (CWSP)12.5%12.5%
Brocade Certified SAN Manager (BCSM)10.0%10.0%
Citrix Certified Integration Architect (CCIA)10.0%10.0%


Shift to the Networking category and you’ll find the following list of top-paying certifications:

  • Cisco Certified Inernetwork Expert (CCIE)
  • EMC Proven Professional Technology Architect – Expert
  • Brocade Certified SAN Manager (BCSM)
  • Cisco Certified Systems Instructor (CCSI)
  • Cisco Certified Voice Professional (CCVP)
  • SNIA Certified Storage Networking Expert
  • Cisco IP Telephony Operations Specialist
  • EMC Proven Professional Implementation Engineer – Expert
  • SNIA Certified Architect
  • Avaya Certified Expert
  • Cisco Certified Internetwork Professional (CCIP)












Tuesday, July 06, 2010

Trace where you got email from

Check out this visual implementation of traceroute. This works good to find out from which location you got email from. Click at this link -> http://www.yougetsignal.com/tools/visual-tracert


All you need to do is type the IP address in very first Received:from field from you email message header. in MS Outlook, you can right-click the message and select "Message Options", read the internet header where you can find all hops which this message took to reach you.

After putting the IP simply click 'Host Trace'
trace the path to a network
Remote Address
Use Current IP








Monday, July 05, 2010

new ethernet standard for HD transmission

HDBaseT - New ethernet standard that aims to be the future of connectivity for our digital devices. Have a look at http://www.hdbaset.org


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