Adding Static ARP Entry In ARP Table To Prevent ARP Spoofing Attacks

Since my hostel network is a switched network, there has been number of attempts of ARP spoofing attacks so I thought to share this small tip to prevent possible ARP spoofing attacks. Adding static ARP entry of the main server in your PC would possibly prevent RP spoofing attacks however I would warn you that some people have been saying that this is not still foolproof method. Theoretically I feel adding static ARP entries in the ARP table is the ultimate solution to prevent ARP spoofing and poisoning attacks.

Linux

Anyway, in linux its pretty straight-forward and the following command would add new static ARP entry:

sudo arp -s IP_Addr MAC_Addr

Replace the IP_Addr and MAC_Addr fields with the necessary IP address and MAC address. For example, to add static ARP entry of my local gateway with IP 192.168.0.1 and MAC 00:14:d1:10:ea:1c, I would do:

sudo arp -s 192.168.0.1 00:14:d1:10:ea:1c

To view all the entries in your system's ARP table, type the following command:

arp -a

And you should see one of the entries similar to kubh-gateway.local (192.168.0.1) at 00:14:d1:10:ea:1c [ether] PERM on eth0.

Windows

Similar command as discussed above should work in Windows XP, however Windows 7 gave some problem while using the above command. I had a test on how to do that and I'm posting the series of screenshots on how to make static ARP entry in windows 7. Btw, I'm sorry that I'm not windows user and hence can't give much details.

arp -a output at beginning

arp -s failure due to lack of privilege

Running command prompt as admin

Adding static ARP entry

arp -a final output

Please go through the given screenshots to understand the steps done while adding static ARP entries in windows 7.


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GooQuiz v. 0.1 Released : Useful For Googling Challenge

GooQuiz is a small web based tool to use as a networked googling quiz software. This tool was developed for IT Meet 2011 event organized by Kathmandu University Computer Club on Dec 4-5, 2011.

The tool allows any number of users to access the system and participate in the googling quiz. A question is given and its answer has to be given within the allocated time after using the google search engine. The person to answer the question first wins the game.

Visit the SourceForge Page

Installation:

- Copy all the files in the folder "googling" to your web folder.
- Give proper permission to the ./pages/question.php file to make it writable. (eg. chmod u+x pages/question.php)
- Open MySQL interface of your choice, create a database called googling and then import dump.sql
- Open ./lib/classes/DBConnection.php and then set the correct database server, username and password.
- Finally open ./config/config.php and set the different configurations as per your need.
- Admin panel is located at ./admin/ and if you need to access admin panel from remote computers, set the $localonly = 0.
- Finally, this tool is yet to be completed and requires little bit techie person to handle it. Addition of questions and few other stuffs should be done from MySQL interface.

Coding might be rough since I had to do it in a single night within very minimum time available. And a lot of stuffs are not user-friendly and admin-friendly. Maybe I'll extend it in the next year IT Meet event. Till then, cya. Bye.

And I would like to thank Brisha for quickly designing the layout of the tool.



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Winners Of GIVEAWAY

As a celebration of our 40k page views, we have conducted GIVEAWAY in early November and the winners of the GIVEAWAYS are:

Suman Ghimire for Emsisoft malware activation key
Supriya Shrestha for recharge charge
The winners are requested to contact winthin 48 hours to claim their prizes. In case of exceeding those 48 hour, the new winner will get a chance .. HAPPY GIVEAWAY :)


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Converting .CUE/.BIN Files To .ISO Format

Bchunk is a CD image format conversion tool that is capable of converting CD images from bin/cue to iso/cdr formats. Converting a .bin/.cue file to .iso can be done by using the bchunk command line tool.

The bin/cue format is used by some non-Unix cd-writing software, but is not supported on most other cd-writing programs. image.bin is the raw cd image file. image.cue is the track index file containing track types and offsets. basename is used for the beginning part of the created track files.

The produced .iso track contains an ISO file system, which can be mounted through a loop device on Linux systems, or written on a CD-R using cdrecord. The .cdr tracks are in the native CD audio format. They can be either written on a CD-R using cdrecord -audio, or converted to WAV (or any other sound format for that matter) using sox.

An example of this is:

bchunk image.bin image.cue image.iso

Following are the available switches in the command, explore them if you need them.

OPTIONS
-v Makes binchunker print some more unnecessary messages, which should not be of interest for anyone.

-w Makes binchunker write audio tracks in WAV format.

-s Makes binchunker swap byte order in the samples of audio tracks.

-p Makes binchunker go into PSX mode and truncate MODE2/2352 tracks to 2336 bytes at offset 0 instead of normal 2048 bytes at offset 24.

-r Makes binchunker output MODE2/2352 tracks in raw format, from offset 0 for 2352 bytes. Good for MPEG/VCD.

To install this tool on ubuntu, open the terminal and type:

sudo apt-get install bchunk

I hope it helps. :)


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Solution For No Ethernet(LAN) In Ubuntu [That Worked For Me]

Not a tutorial but a quick note, I don't know if this works for you or not but this worked for me. Earlier, my system was not showing the ethernet interface and I tried lots of stuffs to find the solution. Just a thought came across my mind and then I turned off my laptop and removed the battery and then inserted the battery after a while. On booting to the system, I found the ethernet to be working. Maybe this might help you sometimes so putting up this small note.




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Free Emsisoft Anti-Malware Activation and Recharge Card Giveaway

I am giving two giveaways for the visitors of my website and will announce the result in December 10, 2011. Please read the full posts with further details on the giveaways.

Giveaway 1: I'll be providing a one year license key for Emsisoft Anti-Malware which is one of the highest ranked anti-malware tools as of now.

Features:

• Comprehensive PC protection against viruses, trojans, spyware, adware, worms, bots, keyloggers and rootkits.
• 2 combined scanners for cleaning: Anti-Virus + Anti-Malware
• 3 guards against new infections: file guard, behavior blocker and surf protection

The first giveaway is available for all the users from all around the world.

Giveaway 2: This giveaway is only for Nepali visitors. I'll give the recharge pins equivalent to Rs. 500 to the winner of the giveaway program.

How To Participate
To participate in the giveaway, you'll have to leave the comment in the comment section below and then like our facebook page.



I'll announce the winners of the giveaway on the 10th of December and will update this page and will make a new post as well. Check the blog on that date and I'll make contact you in your e-mail adddress.


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Creating Your Profile Banner On Facebook

Making a profile banner in Facebook is a way lot eye-catching idea to display your important news or just your profile page's banner itself. Facebook lets you display 5 photos on top of your wall from which you can create a sequence. For this you can use app like profile banner but self customization is more preferable.You simply have to create a banner with sixe 485px * 68px and divide them into 5 equal photos.

1.After uploading your 5 photos to your album,

skip publishing for a while.

2.Sequence of photo totally depends upon the sequencce of tagging.That is why tag the photo to yourself in opposite order(tag last to the one you want 1st).

Now your banner is completely ready with your information.

But you cannot prevent your friends tagging you some other photo which will disrupt the sequence so you can hide it by clicking on the "x" just on the right corner on the banner as shown in picture.

But this thing cannot be done for the facebook fan pages because we cannot maintain the sequence of display.A quite clever method could be :

Making the individual photo of size 97*68 informative itself so that sequence doesn't matter at all.

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Setting A Sticky Post In Blogger [Keep a Post Always In Top]

I wanted to set my giveaway post always at the top of post even if I posted new posts so this is just little trick that might be useful for many people out there. Since blogger arranges the blog posts in the reverse chronological order (descending order of date and time), we apply a little trick to set our post always at the top just like the sticky post.

The trick is to set the date and time of the post to some date that is far away in the future. For example, you could keep the date of your post to 2020 A.D. thus that post will always be at top since blogger shows the post in the reverse chronological order. Now to do this, while you are composing your post or editing your post, click on Post Options to expand it and then in the Post date and time, select the Scheduled at and then enter some future date. Now just publish your post and this particular post will always be in the top of your blog homepage. I hope it helps you. :)


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