VPN configurations for internet addicts

Preamble :

One of my friends have blogged on how he managed to connect via VPN and to generic internet in parallel.

http://tdevinda.blogspot.com/2009/11/whats-inside-what-virtualization.html

This ended up in bringing a nice discussion on routing, VPN and VMs.

Following is my solution.


Issue :

Under normal conditions; when you get connected to a VPN, it is not possible to get connected with the internet.

Reason:

When you get connected to the VPN, automatically it is set as the default route.


Solution:

1. Once you are connected to VPN, remove the default route for VPN. Under linux vpn is normally tun0.
2. Then add a default entry for your usual network interface. (eth0, ppp0, etc)
3. Then add the routing entry for the specific IP or the subnet which you need to get connected through VPN for tun0

Installing IE 8

Installed IE 8 in my office pc. (Yes I do use Fedora in my laptop, but the PC at office is still windoz xp). I am an avid follower of firefox. But my job includes testing web pages in many browsers. Earlier I was using IE6. But it was a pain to use it as it had no tabs. So after putting it off for many months, finally I decided to have the plunge.

Installing was a pain. If I participated in testing IE8, I will never give OK for it. There are many improvements to be done.
1. Installing process is awfully lengthy. In fact, an OS can be installed within that time.
2. There is no progress bar in the installation dialog, only a scrolling green worm like bar. So you got no idea whether installtion is actually in progress or something has gone wrong and installer is not responding.

Functionality seems still OK. In fact I'm writing the blog, via IE8. :-)

Hats off for Linux

I decided to use Fedora in my Laptop. The biggest hindrence I had to shift to Fedora from Windoz is now solved. You can plug and play USB HSPA modems now. Now hassles, just plug it and it works, even faster than on windoz xp.

This facility is available in Fedora 11 and Ubuntu 9. Guess most of the new Linux like Oss should have this.

C++ with netbeans

Few steps should be followed to integrate C++ with netbeans in Windows

1. Download and install MinGW
2. Download and install msys

• MinGW is the C/C++ compiler
• Msys is some kind of a unix emulator. After installing it and setting it in the path system variable, you can input unix commands such as mkdir, ls in the dos prompt. This is needed as makefile in C++ needs to access unix commands.

3. In the compile command dialog in netbeans provide the MinGW bin directory for base. Then it will identify C and C++ compilers other than the makefile. You need to provide the makefile.exe in msys/bin as the makefile location.

Then as the K&R said in their famouse C book, "if you have not botched anything, it should work" :-)

JSP importing class and jar files

Using java class files in jsp files

1. Put the class files in WEB-INF/classes/ folder

2. Import the class as <%@page import="."%>

3. Call that class as you would do in a normal java program

eg:

<%@page import="test.Hello"%>

<%
Hello heloo = new Hello();
String myName = heloo.SayName();
out.println("From scriptlet : "+ myName + "\n");
%>





Using a jar file in jsp

1. Put the jar file in lib folder.

2. Import the jar file as <%@page import=".*"%>

3. Call the class as .

eg:

<%@page import="jarTest.*"%>

<%
jartest.Main m = new jartest.Main();
String name = m.getName("Pinda");
out.println(name);
%>

Vive la Netbeans

Following day's I was completely worries and frustrated with my bad experience on web services with Eclipse plugging for Axis.

Found a solution today. It is netbeans. Really nice and I love the way it creates the implementation from wsdl file.

axis2 plugins for Eclipse

I wasted a complete day by trying to do a web service using them.

It is a complete bad job. There are no complete set of jar files in lib folder. When the site says it is version 1.4.1 but when downloaded it is shown as 1.3.

Followed 2 tutorials published by WSO2. Oops, only the frustration is left.

When you do something, do it properly.