Wednesday 30 March 2011

Torbutton for Firefox 4

Torbutton is a 1-click way for Firefox users to enable or disable the browser's use of Tor. It adds a panel to the statusbar that says "Tor Enabled" (in green) or "Tor Disabled" (in red). The user may click on the panel to toggle the status. If the user (or some other extension) changes the proxy settings, the change is automatically reflected in the statusbar.

I lately upgraded my firefox 3.6 to firefox 4 and so far it looks pretty good and I am having fun with the new firefox. But many of the old add-ons were not working and I had to upgrade them as well. Among them, torbutton was also not working so I checked the mozilla addons site but apparently didn't find any update to it. I could each time edit the network preferences to set the proxy but I am too lazy to do that always so checked the torproject site and found new release of torbutton.
Torproject has released alpha version of new torbutton that will work for firefox for now. Though its still in testing phase and might need to be worked on, we can still use it and seems to work well except I can't see the menus properly when I right-click on the torbutton icon.

To download and install torbutton in FF4, Click Here. Btw, the new add-on manager makes the installation process pretty simple and sleek.

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emesene : A lightweight MSN Messenger client

emesene is a nice and simple MSN Messenger client. It tries to be similar to the official client, but with a simpler interface and a nicer look.

emesene has got very simple and cool graphics and is fully coded in python using pyGTK, GTK+. Hence, its a cross platform messenger with binaries available for different platforms and the source code available under GNU GPL license.

Following part is taken from wikipedia entry on emesene.

The current version of emesene is compatible with the Windows Live Messenger protocol MSNP15.

Official Windows Live Messenger features supported by the client are:

Offline messaging
Personal messages
'Now Playing' personal messages
Nudges
Contact list retrieval from server
Nickname retrieval from server
Tabbed chat windows
File transfer
Webcam support (1.6.3 working)

Other features specific to emesene are:

Plugins (now playing, AES Encryption, Gmail checker, POP3 mail checker, spell checker, Youtube videos, last.fm song reporting, MSN Premium and others)
Auto-reply
Minimize to notification area (System Tray)
Window and icon themes
Emoticon themes
Multilingual support

To install emesene in ubuntu, open the terminal and type:

sudo apt-get install emesene

To download and install emesene under under OS, you can go to the Download page of emesene.

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Sunday 27 March 2011

Passing variable/arbitrary number of arguments in PHP

Sometimes, we might need to pass arbitrary number of arguments in PHP and probably we might have been using the option arguments feature of PHP for this purpose but we have got yet another function that can be utilized for passing arbitrary number of arguments to your functions.

func_get_args() is a very useful function available to achieve the passing of arbitrary number of arguments. The function returns the array of the arguments passed to the function. The following sample code will clarify.
<?php
function func()
{
 $args = func_get_args(); //array of the arguments passed to the function
 //now we could do anything with them..
 
 foreach ($args as $key => $val)
 {
  echo "Argument $key : $val
";
 }
 
 }
 func();
 func("I love my Nepal");
 func("I love my Nepal", "I love my culture");

?>

Hope it helps some of you out there.


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Saturday 26 March 2011

xRDP installation how to

Based on the work of rdesktop, xrdp uses the remote desktop protocol to present a GUI to the user.

The goal of this project is to provide a fully functional Linux terminal server, capable of accepting connections from rdesktop and Microsoft's own terminal server / remote desktop clients.

We can download and install the xRDP directly from the ubuntu software center under ubuntu and the source can be downloaded for other distros. After the installation, we can execute the command from the terminal as below to verify if its working correctly or not.

rdesktop 127.0.0.1


In the sunde terminals and probably in other such hardware products, we don't have to remember this command. Sunde gives us the option to choose Linux from the configuration display and that would be enough for running xRDP. And it seems to work pretty fast.

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Friday 25 March 2011

Copying a file to all subdirectories in Linux

You might sometimes need to copy a single file to all the subdirectories and this can be easily achieved with linux terminal by simply using some commands.

Below is how I copied password.txt file to all the subdirectories inside the Moviez directory from terminal.

find /samar/Moviez -type d -exec cp -i /samar/Readme/password.txt {} \;

Isn't it simple? And it will surely come handy sometimes. Have fun. :)

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Backtrack 5 Release date announced

Backtrack Linux is the most widely used security pentesting distro and its now near to v. 5. The backtrack team has announced the release date of the BT5.

More INFO HERE

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Monday 21 March 2011

Offline version of UnicodeNepali.Com V3 Converter

Sometimes, we might need to use unicodenepali.com converter and we might not have access to the internet. But, by just saving the complete webpage of the converter, you could get the offline version of the converter. Now you can take the downloaded html and its related files anywhere and open the html file to run the converter offline.

Even better, if you are windows user, you could save .hta version from Internet explorer and could make a single file of the converter in your own computer.

Go to the URL: http://www.unicodenepali.com/v3/convert.html

and press Ctrl+S to save the complete webpage. See the screenshot below:


Hope you find this useful.

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Netpoint Protocol installation and setup[How To]

Recently, I and my friends had to implement netpoint protocol to setup the server/client eLibrary environment in one of the schools in Nepal. In this post, I will list the steps to follow while setting up such terminals. By the way, the terminals we used were Sunde terminals. This is pretty short tutorial without going into details because I assume that the person who performs these installation has good knowledge of how computers work.

a) Install Windows XP(or any other windows version) in the server machine

b) Select and run one of the Sunde terminal clients. Its for downloading the necessary softwares to our server machine as the necessary softwares are hosted in the Sunde terminal clients.

c) Connect the server and client with ethernet cable and set static IP address for both the server and client.

d) Run the internet explorer and type the I.P. address of the sunde client in address bar.

e) You'll find a page from where you can download netpoint setup file and user guide as well. (Also, xRDP for linux is available for download).

f) Install the netpoint setup software in your server machine and it will have netpoint protocol and netpoint management GUI installed in it.

g) Now you'll have to add users and assign the newly created users to "Remote Desktop Users" group. For that, right click in My computer -> Manage and from there, you can add users and assign them to groups from "users and groups" section. I would let you figure out how to do this. Btw, create the users with passwords otherwise you'll have to perform group policy editing to allow logging in of remote users without passwords(to do that, use gpedit.msc)

h) If you want to setup DHCP server in your server, you could do so. Otherwise setting up the static IP would be enough. Now, set the static IPs for all the clients and also set the server IP in all those clients.

Your sunde terminals are now ready to go. If you get messages like "can not connect to server", ensure that server IP in the clients is correct and also make sure the physical things such as NIC, ethernet cable, etc. are working correctly. If you get the login window and can't login with the user, make sure those users are assigned to group "Remote Desktop Users". Also, sometimes you might need to turn firewall off in the server.

I might have missed some stuffs while writing this. If you face any problem, feel free to comment. And I am sorry that I could not provide you any screenshots. Maybe sometimes later when I got the next netpoint deployment(but its unlikely). Also, you can use Linux in the server and in that case, you will have to use xRDP or any other RDP protocol server software for linux.

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