http://www.thestar.com/news/article/732572--india-hanging-up-on-25-million-cellphones
Better late than never. Good Move
Monday, 30 November 2009
Saturday, 28 November 2009
Friday, 27 November 2009
Thursday, 26 November 2009
Wednesday, 25 November 2009
Saturday, 21 November 2009
Vecima's 3.5 GHz WiMAX solution deployed by major Canadian oil production and distribution company
http://www.tele-management.ca/content/9982-vecimas_35_ghz_wimax_solution_deployed_by_major_canadian_oil_production_and_distributio
I have worked on Vecima 3.5 gear and there are lot of bugs that needs to be fixed by Vecima.
Customers will have to Power Cycle their Wimax Subscriber Station units PoE, very often to get back online.
If the TV antenna and Subscriber unit are on the same TV tower, some customers may have problems with some TV channels.
Need to make sure that TV antenna cable and SS are not touching each other and should have some gaps.
I have worked on Vecima 3.5 gear and there are lot of bugs that needs to be fixed by Vecima.
Customers will have to Power Cycle their Wimax Subscriber Station units PoE, very often to get back online.
If the TV antenna and Subscriber unit are on the same TV tower, some customers may have problems with some TV channels.
Need to make sure that TV antenna cable and SS are not touching each other and should have some gaps.
Happiness on Facebook Cuts Canadian Woman's Health Care
http://www.pcworld.com/article/182740/happiness_on_facebook_cuts_canadian_womans_health_care.html
Something wrong with Privacy here ? Things going too Far?
Something wrong with Privacy here ? Things going too Far?
Friday, 20 November 2009
Google Chrome OS
http://www.cnn.com/2009/TECH/11/20/google.os/index.html
Chrome OS is a Linux-based, open-source operating system centered on Google's Chrome browser. Applications will run exclusively inside the browser
My Comments:
I am still skeptical about Google OS Cloud Computing because it requires all users to have internet access and the resources are located remotely, which has got its ups and downs.
You have to buy Google specified hardware like Apple?
What about Privacy? Google will have full control over resources even though they will claim that they won't.
Chrome OS is a Linux-based, open-source operating system centered on Google's Chrome browser. Applications will run exclusively inside the browser
My Comments:
I am still skeptical about Google OS Cloud Computing because it requires all users to have internet access and the resources are located remotely, which has got its ups and downs.
You have to buy Google specified hardware like Apple?
What about Privacy? Google will have full control over resources even though they will claim that they won't.
Thursday, 19 November 2009
Rural Broadband in Canada
Cost of Rural Broadband is very expensive and ROI is too slow. Without Govt assistance its not possible to run this Business in Canada.
With very few customers and the cost of expanding network coverage towers are way to much.
If there are 3-4 small WISP players, they also eat up the market.
WISP is going through challenging period, especilally in Canada we don't have that many people comparing the large land mass.
Should I Start a WISP in My Community?
http://www.bbwexchange.com/turnkey/top10questions.asp
10 Common Mistakes of WISP Beginners
http://www.bbwexchange.com/turnkey/top10mistakes.asp
With very few customers and the cost of expanding network coverage towers are way to much.
If there are 3-4 small WISP players, they also eat up the market.
WISP is going through challenging period, especilally in Canada we don't have that many people comparing the large land mass.
Should I Start a WISP in My Community?
http://www.bbwexchange.com/turnkey/top10questions.asp
10 Common Mistakes of WISP Beginners
http://www.bbwexchange.com/turnkey/top10mistakes.asp
Wednesday, 18 November 2009
Tuesday, 17 November 2009
Skpye uses more Video Bandwidth
Skpye uses more bandwidth compared to other messenger application e.g yahoo messenger when it comes to " Video" Streaming but its the other way round for "Voice"
If you have internet plan that allow only certain amount of Bandwith Usage/monthly, then better install a software called " BitMeter" which keeps track of your usage and helps in monitoring your individual PC bandwidth traffic.
If you have internet plan that allow only certain amount of Bandwith Usage/monthly, then better install a software called " BitMeter" which keeps track of your usage and helps in monitoring your individual PC bandwidth traffic.
Monday, 16 November 2009
Social Networking
I strongly believe there is a need for a secured Centralized age verification process to make sure, social networking sites users are 18+
TOP FIVE SUPERCOMPUTERS
1] Jaguar, Oak Ridge National Laboratory, US. (1.759 petaflops; 224,162 processors)
2] Roadrunner, Los Alamos National Laboratory, US (1.042 petaflops; 122,400 processors)
3] Kraken XT5, University of Tennessee, US(831.7 teraflops; 98,928 processors)
4] Jugene, Forschungszentrum Juelich, Germany (835.5 teraflops; 294,912 processors)
5] Tianhe-1, National SuperComputer Center, China (563.1 teraflops; 71,680 processors)
Wednesday, 11 November 2009
Unsecured Indian Passport application status web site
I found that Govt of India web site for Passport application status is not " secured"
If you already have a passport application file number then by changing random numbers, you would be able to see other applicants name, date of birth, submitted date and status info.
I have already reported this issue to the ministry and media.
Hope this issue will be resolved immeditely.
http://passport.gov.in/
If you already have a passport application file number then by changing random numbers, you would be able to see other applicants name, date of birth, submitted date and status info.
I have already reported this issue to the ministry and media.
Hope this issue will be resolved immeditely.
http://passport.gov.in/
Sunday, 8 November 2009
Uniting World’s Bloggers
Blog Action Day is an annual event that unites the world’s bloggers in posting about the same issue on the same day on their own blogs with the aim of sparking discussion around an issue of global importance
The goal is to create a world wide awareness on a different topic each year through the power of blogging
http://www.blogactionday.org/
The goal is to create a world wide awareness on a different topic each year through the power of blogging
http://www.blogactionday.org/
Saturday, 7 November 2009
Friday, 6 November 2009
Snoop on your own network with ntop
* Author: Vincent Danen
Ever wonder what is happening on your network? Particularly in terms of what traffic is passing in and out? Whether it’s out of curiosity or you have a real need to audit what kind of traffic is passing through your network, ntop is a fantastic tool that will more than likely do what you need.
Ntop is for networks what top is for processes on the local system. With top you can view all kinds of process information: memory and CPU usage, system load, and so forth. With ntop you can view similar information, but related to network processes: network load throughput, active connections, which hosts are connecting to what sites, the amount of bandwidth sent to a particular site, protocol usage, and more. Ntop provides so much information, in fact, that it will take time to wade through it all and narrow down what is pertinent to you.
A number of distributions provide ntop pre-packaged so it’s a simple yum, urpmi, or apt-get away. Once it is installed, it should be started manually, first, so you can set the administrator password; instead of running service ntop start, run ntop directly; it will ask for the password before starting the actual service. Once you have set the password, you can hit CTRL-C to kill the service and then use service ntop start to enable the service to run in the background.
When ntop is running, you can connect to the host it’s running on, using port 3000 by default. There may be access restrictions denying access to everything other than connections coming from the localhost; if you want to connect from a different host you may have to edit the ntop configuration file (/etc/ntop.conf on Fedora). For instance, on Fedora, ntop will listen to 127.0.0.1:3000 for HTTP connections; you will want to change that to a reachable IP address instead (i.e., 192.168.10.1:3000) and restart ntop to make the change effective. Now you can log in using a Web browser pointing to http://[ip_address]:3000 or https://[ip_address]:3001 if the HTTPS server is enabled (again, see the configuration file).
Once you have logged in, there is a lot that you can look at. Ntop has a lot of information available on network traffic. On the main page you will find global traffic statistics which provide information such as:
* Total number of packets broken down by type (TCP, UDP, etc.)
* Total number of packets broken down by packet size
* Bad packets
* Number of hops to remote hosts
* Current and average network loads
* Protocol distribution (broken down by active protocols such as HTTP, SSH, FTP, etc.)
At the top of the page there are links to configure various plugins and configuration options for ntop itself. There are also links to other ways you can view the data, such as looking at network load statistics in nice RRD graphs and a breakdown of communication by host. The latter is really useful if you want to see what systems are connecting to a particular domain and how they are connecting.
As an example, you could click on a link such as “www.facebook.com” and see exactly when traffic was sent to it during the last 24 hours, what hosts on the local subnet connected to it, and what protocol was used (HTTP or HTTPS, etc.). There are even links where you can see where the end-host is located geographically using Google Maps, and you can also obtain WHOIS information with a simple click.
The amount of information you get from ntop is very impressive. If you are curious, need to debug, or need to audit your network usage and throughput, ntop is definitely one good tool to use.
**************M@ani
I have used NTOP and found it very usefull. You can see different types of traffic based on IP address, protocol, ports etc.
You can find out, who is using VOIP,email,Peer2Peer, internet etc
http://www.ntop.org/overview.html
Ever wonder what is happening on your network? Particularly in terms of what traffic is passing in and out? Whether it’s out of curiosity or you have a real need to audit what kind of traffic is passing through your network, ntop is a fantastic tool that will more than likely do what you need.
Ntop is for networks what top is for processes on the local system. With top you can view all kinds of process information: memory and CPU usage, system load, and so forth. With ntop you can view similar information, but related to network processes: network load throughput, active connections, which hosts are connecting to what sites, the amount of bandwidth sent to a particular site, protocol usage, and more. Ntop provides so much information, in fact, that it will take time to wade through it all and narrow down what is pertinent to you.
A number of distributions provide ntop pre-packaged so it’s a simple yum, urpmi, or apt-get away. Once it is installed, it should be started manually, first, so you can set the administrator password; instead of running service ntop start, run ntop directly; it will ask for the password before starting the actual service. Once you have set the password, you can hit CTRL-C to kill the service and then use service ntop start to enable the service to run in the background.
When ntop is running, you can connect to the host it’s running on, using port 3000 by default. There may be access restrictions denying access to everything other than connections coming from the localhost; if you want to connect from a different host you may have to edit the ntop configuration file (/etc/ntop.conf on Fedora). For instance, on Fedora, ntop will listen to 127.0.0.1:3000 for HTTP connections; you will want to change that to a reachable IP address instead (i.e., 192.168.10.1:3000) and restart ntop to make the change effective. Now you can log in using a Web browser pointing to http://[ip_address]:3000 or https://[ip_address]:3001 if the HTTPS server is enabled (again, see the configuration file).
Once you have logged in, there is a lot that you can look at. Ntop has a lot of information available on network traffic. On the main page you will find global traffic statistics which provide information such as:
* Total number of packets broken down by type (TCP, UDP, etc.)
* Total number of packets broken down by packet size
* Bad packets
* Number of hops to remote hosts
* Current and average network loads
* Protocol distribution (broken down by active protocols such as HTTP, SSH, FTP, etc.)
At the top of the page there are links to configure various plugins and configuration options for ntop itself. There are also links to other ways you can view the data, such as looking at network load statistics in nice RRD graphs and a breakdown of communication by host. The latter is really useful if you want to see what systems are connecting to a particular domain and how they are connecting.
As an example, you could click on a link such as “www.facebook.com” and see exactly when traffic was sent to it during the last 24 hours, what hosts on the local subnet connected to it, and what protocol was used (HTTP or HTTPS, etc.). There are even links where you can see where the end-host is located geographically using Google Maps, and you can also obtain WHOIS information with a simple click.
The amount of information you get from ntop is very impressive. If you are curious, need to debug, or need to audit your network usage and throughput, ntop is definitely one good tool to use.
**************M@ani
I have used NTOP and found it very usefull. You can see different types of traffic based on IP address, protocol, ports etc.
You can find out, who is using VOIP,email,Peer2Peer, internet etc
http://www.ntop.org/overview.html
Thursday, 5 November 2009
Future of Virtualization Technology
Reduce the number of physical servers and energy consumption, by using Virtualization technology to run multiple virtual machines on a single physical server
VMWare claims that its virtualized infrastructure can decrease energy costs by as much as 80 percent.
Virtualization with Microsoft Hyper-V
http://www.microsoft.com/windowsserver2008/en/us/hyperv-main.aspx
VMWare claims that its virtualized infrastructure can decrease energy costs by as much as 80 percent.
Virtualization with Microsoft Hyper-V
http://www.microsoft.com/windowsserver2008/en/us/hyperv-main.aspx
Future of Cloud Computing=Utility Computing Web 2.0
http://www.youtube.com/watch?v=ae_DKNwK_ms
http://www.youtube.com/watch?v=hplXnFUlPmg
Will Cloud Computing Kill " Inhouse" Hosting v/s Third Party Hosting ?
Cloud Computing: Google already had several outages related to their Gmail services including for Enterprise Customers.
Cloud Computing with also increase the need for Internet Bandwidth Pipe as resources will be accessed from outside ur network, geography etc
Good thing about Cloud computing is Cost and Customization of Server Application based on customer needs.
What about security? You are expecting the Hosting guys to take care of your services security, just like Web hosting services.
http://www.youtube.com/watch?v=hplXnFUlPmg
Will Cloud Computing Kill " Inhouse" Hosting v/s Third Party Hosting ?
Cloud Computing: Google already had several outages related to their Gmail services including for Enterprise Customers.
Cloud Computing with also increase the need for Internet Bandwidth Pipe as resources will be accessed from outside ur network, geography etc
Good thing about Cloud computing is Cost and Customization of Server Application based on customer needs.
What about security? You are expecting the Hosting guys to take care of your services security, just like Web hosting services.
Wednesday, 4 November 2009
The Impact of E-Surveillance on Information Security in India
Since Wifi Networks being misused by Anti Social Elements especially Unsecured wireless networks, Govt of India has sent directives to ISP's, suggesting All internet subscribers who have Deployed WiFi Networks within their premises to register their wireless equipment with the ISP
e.g of Directive: http://www.tataindicombroadband.in/mailers/Instructions%20of%20DoT-%20Wi-Fi%20Security.pdf
Cisco Alert: http://blogs.cisco.com/security/comments/the_impact_of_e-surveillance_on_information_security_in_india
Earlier RIM and Skype had refused to share their Encryption key for Blackberry email and VOIP calls, sparking controversy.
e.g of Directive: http://www.tataindicombroadband.in/mailers/Instructions%20of%20DoT-%20Wi-Fi%20Security.pdf
Cisco Alert: http://blogs.cisco.com/security/comments/the_impact_of_e-surveillance_on_information_security_in_india
Earlier RIM and Skype had refused to share their Encryption key for Blackberry email and VOIP calls, sparking controversy.
Basics OSPF Route learning process
1] Each router discovers its neighbors on each interface. The list of neighbors is kept in a
neighbor table.
2] Each router uses a reliable protocol to exchange topology information (LSAs) with its
neighbors.
3] Each router places the learned topology information in its topology database.
4] Each router runs the SPF algorithm against its own topology database to calculate the
best routes to each subnet in the database.
5] Each router places the best route to each subnet in the IP routing table.
neighbor table.
2] Each router uses a reliable protocol to exchange topology information (LSAs) with its
neighbors.
3] Each router places the learned topology information in its topology database.
4] Each router runs the SPF algorithm against its own topology database to calculate the
best routes to each subnet in the database.
5] Each router places the best route to each subnet in the IP routing table.
VPN IPSec Process
1] Interesting Traffic initiates the IPSec process. IPSec security policy configured in the IPSec peers starts the IKE process.
2] IKE phase 1. IKE authenticates IPSec peers and negotiates IKE SAs during this phase, setting up a secure channel for negotiating IPSec SAs in phase 2.
3] IKE phase 2. IKE negotiates IPSec SA parameters and sets up matching IPSec SAs in the peers.
4] Data transfer. Data is transferred between IPSec peers based on the IPSec parameters and keys stored in the SA database.
5] IPSec tunnel termination. IPSec SAs terminate through deletion or by timing out.
2] IKE phase 1. IKE authenticates IPSec peers and negotiates IKE SAs during this phase, setting up a secure channel for negotiating IPSec SAs in phase 2.
3] IKE phase 2. IKE negotiates IPSec SA parameters and sets up matching IPSec SAs in the peers.
4] Data transfer. Data is transferred between IPSec peers based on the IPSec parameters and keys stored in the SA database.
5] IPSec tunnel termination. IPSec SAs terminate through deletion or by timing out.
Soft Skills
1] Listening
2] Communication
3 ] Confidence
4] Time and Project Management
5] Team Work
6] Empathy
7] Appreciation and Respect
8] Leadership
9] Public Speaking
10] Business Knowledge
2] Communication
3 ] Confidence
4] Time and Project Management
5] Team Work
6] Empathy
7] Appreciation and Respect
8] Leadership
9] Public Speaking
10] Business Knowledge
ISP Point of View-Common Network Issues
1] Cable
2] Connectivity
3] Network Collisions
4] Software
5] IP Addressing
2] Connectivity
3] Network Collisions
4] Software
5] IP Addressing
Tuesday, 3 November 2009
ISP Point of View-Wireless backhaul connection dropping
Problem: Due to some reason, Master and Slave wireless backhaul's dropping connection
Solution: Noticed DFS(Dynamic Frequency Selection) causing "channel" to change resulting in interference on overlapping new channel. e.g Weather Radar
According to Industry Canada: Devices shall employ a DFS radar detection mechanism to detect the presence of radar systems and to avoid co-channel operation with radar systems
Solution: Noticed DFS(Dynamic Frequency Selection) causing "channel" to change resulting in interference on overlapping new channel. e.g Weather Radar
According to Industry Canada: Devices shall employ a DFS radar detection mechanism to detect the presence of radar systems and to avoid co-channel operation with radar systems
ISP Point of View-One Way voice communication
Problem: Unable to hear two way voice communication using Asterisk PBX
Solution: Requires NAT entry for external public and internal private IP under Asterisk configuration
Solution: Requires NAT entry for external public and internal private IP under Asterisk configuration
ISP Point of View-Slow Network
Problem: Network too Slow
Solution: Router seeing two Mac address for the same laptop on the same subnet because the same laptop was used to " Clone Mac" address
Solution: Router seeing two Mac address for the same laptop on the same subnet because the same laptop was used to " Clone Mac" address
ISP Point of View-Unable to access Banking Web Site
Problem: One day, I came across a customer issue, where Customer was not able to access RBC Secured Banking Site but able to access all the other Canadian Banking Sites.
Solution: Due to some reason, there was no "Name Resolution" for the Customer IP address.
Found that RBC, has extra layer of security compared to other Canadian Banking Site.
Solution: Due to some reason, there was no "Name Resolution" for the Customer IP address.
Found that RBC, has extra layer of security compared to other Canadian Banking Site.
Key things to Maintain, Manage and Expand a Network Infrastructure
1] Connectivity
2] Performance
3] Security
4] Flexibility
2] Performance
3] Security
4] Flexibility
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