How to make progressive images

Download - jpegtran from here - http://jpegclub.org/jpegtran/

Usage: jpegtran.exe [switches] inputfile outputfile
Example:  jpegtran -progressive -optimize -copy none slideImage2.jpg slideImage2_optimized.jpg

User experience example - Check the video on this url -
http://blog.patrickmeenan.com/2013/06/progressive-jpegs-ftw.html

Other urls -
http://www.yuiblog.com/blog/2008/12/05/imageopt-4/
http://blog.patrickmeenan.com/2013/06/progressive-jpegs-ftw.html
http://www.webhostinghero.com/improve-website-load-times-using-progressive-jpegs/

Learning from nestat

The netstat output looks something like -

Source IP: Source Port     Destination IP: Destination Port

I had an understanding that the source ports for any two such netstat entries cannot be same, Was proved wrong. The source port can be same,  just that combination of 4 should be unique between two such entries.

i.e. this is possible

10.10.XX.XXX: 50493     10.10.40.XX:8009
10.10.XX.XXX: 50493     10.10.40.X:8009