Happy FOSS

Opensource, Technology, Programming & Computer Science

Securing Wireless Access Point

In order to be safe from malicious people who misuse the wireless networks, it is mandatory to secure the Wireless Access Point(WAP).

The following configurations has to be performed on the WAP

1. Change the default admin user’s password to a strong password and keep it secret.

2. Enable WPA key for connecting to the wireless network.

3. Enable MAC filter. MAC refers to a unique address of the wireless cards of desktops/laptops/other devices that can connect to the wireless network. Thus even if someone comes to know a WPA key. They will not be able to connect to the wireless network because their MAC address is not listed in the allowed MAC list configured in the wireless access point

4. Use OpenDNS IP address for DNS servers, if the WAP acts as a DHCP server for the wireless network.

5. WAP has firewall builtin. Set the firewall rules appropriately so that it allows only certain services running on the WAP/ within the wireless network to be exposed and thus only those ports are open.

6. Take a backup of the configuration you have done on the WAP. This will be helpful if you lose the settings of the WAP because of reseting or accidental modification. In such cases you can apply the backed up configuration.

If you are ignorant about configuring the WAP, please get it done by some one who can do it.
Stay safe and secure.

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October 19, 2008 Posted by | Internet, Networking, Security | , , | Leave a comment

Open source in Engineering Curriculum

Take GNU/Linux as your case study and use FOSS in subjects that you will encounter

for example

1.System Software
2.Data Structures
3.OOPS
4.Operating Systems
5.Computer Networks
6. Web Technology
7.Cryptography & Network Security
8.Embedded Systems

One can do his/her assignments, projects, research using Open Source Software!

When you can come to position of contributing to open source projects,
please do 🙂 I guess it takes final year for that, but it depends on the individual.

Like a biology student disects rabit to learn biological science, Computer Science student has to essentially use Open Source tools and software to understand Computer Science.
Disect the code 😉

Join mailing lists of your favorite open software to collaborate with the community.

October 10, 2008 Posted by | FOSS, Linux, Software | , , | 2 Comments

Best way to store numbers in mobile contacts

Its better to store the mobile numbers/phone numbers in the proper format.

That is the number along with country and area code prefixed appropriately.

If stored this way, there will be no problem, when one goes roaming.

For example, when within india, a contact with 04424XXXXXX is valid even while roaming.

As in India, “0” stands for dialing code for dialing an long distance call/calling a telephone number from a mobile network. But not valid while roaming Internationally.

So the best way to save it in contacts is +914424XXXXXX for a telephone in India

For a mobile it would be +9198845XXXXX

http://en.wikipedia.org/wiki/List_of_country_calling_codes

Country code can be intrepreted by moving right of symbol + in a phone/mobile number and matching it with the list given in the above link.

So the format to present visually describing a mobile number with country code in india would be

+91-98845XXXXX

Similarly the format to present visually describe the contry and area code of a telephone number in India would be

+91-44-24XXXXXX

The “-” in the above two example numbers is not valid for dialing, so for dialing the “-” are removed.

The “+” symbol is a placeholder for substituting the dialout code for the country from where the call is originating.

For India the international dialout code is 00 and for long distance call within India the dialout code is 0. But when dialing from mobile this is taken care of automatically by the mobile phone service provider. Thats the significance of “+” sign in mobiles 🙂

For more info on dialing to/from India

http://en.wikipedia.org/wiki/%2B91

October 4, 2008 Posted by | Mobile | , , , , | Leave a comment