Your IP - Now My IP

Internet Protocol (IP) address is given to each device connected to the Net. IP addresses consist of four numbers and look something like 117.0.0.1. All these numbers are usually assigned to Internet Service Providers (ISPs) within the region-based blocks. An IP-address can be used to identify the country or region from which a device is connecting to the Internet.

Earlier, ISPs issues one IP-address to each user. These are called static IP addresses. ISPs now issue IP addresses in a dynamic fashion out of a pool of addresses (using DHCP). These are referred to as dynamic IP addresses. With virtual hosting, a single machine can act like multiple machines (with multiple domain names and protocol addresses).

IP Address reveals your...

Using an IP-address it is quite easy to identify the place including the country, state, city, using a few web applications. Finding IP-address of the Yahoo, Rediff, Hotmail, etc, email senders is easy. Google masks the outgoing IP-address of the sender who sends mails using the Gmail web interface.

Using IP-Tracker like software installed on remote devices, you can access the same from anywhere. IP-Tracker constantly monitors the dynamic IPaddress of the device and whenever the IPaddress changes, it sends a mail to your inbox notifying you of your new IPaddress.

How can I change my IP Address

• If you are using a dial-up connection, you can simply dialup through an alternate access number
• For cable/DSL with a router:

1. Open your router control panel
2. Increase your MAC address by one number
3. Then disconnect and reconnect your router. Now, after doing this, your ISP will give a new IP.
4. If you find any problem, switch back to previous MAC

How can I hide my IP Address

You can hide your IPaddress using...

• IP changer software.
• anonymous software

Advantages of knowing my IP Address

Knowing your IPaddress can allow you to access

• services running on your machine (E.g., online games)
• servers (FTP, web, mail)
• remote access utilities (MS Remote Desktop, GoToMyPC, PCAnywhere).

Virtual Hosting Explained

Virtual hosting allows a single machine act like multiple machines (with multiple domain names and IP-addresses).

How can I know the IP-address of the person whom you have been chatting in your IM (Instant Messenger)

• If you want to know the IP, run a packet sniffer and initiate a file transfer.
• You will need to set up a file transfer in order to see the internet protocol address of the person you are communicating with; the transfer will go pretty much direct to the other person's computer. Otherwise you get the protocol address of the server.

If you run a packet sniffer, you need to send a request using ICMP, and then TCP with the SYN ACK flag set) and the target computer will respond. TCP SYN ACK packet gives you the target device's port number, IP-address, etc.

But there are exceptions. If the target device runs behind a router with a hardware firewall, you may not get the actual protocol address you are looking for; instead, a WAN IP of some sort usually the one from the ISP will be displayed.

In conclusion, since internet protocol addresses reveal your physical location and also gives more details to others; it is advisable not to display your protocol address except for essential and important communication. Mask the IP-address for you and your device's security sake.

Resources:
Hacking - What, When & How
Browsers - Gateway to the Internet
Strategies to Learn English Article

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What Are The Bandwidth Requirements For IPTV Implementation?

Many see IPTV as the "next big thing". However, often both providers and users are unclear on one of the most basic tenants of IPTV quality functionality. The required bandwidth. So... just what is the minimum bandwidth which will give a "good" movie experience?

Actually, the question posed in those terms does not make a lot of sense.

As a matter of fact you must take into consideration the resolution in pixels of the video. Example, for a 16:9 broadcast the numbers are as follows:

704x480
1280x768
1920x1080

The frame rate will be 24, to match the cameras used to film movies.

Then you should consider the codec in use to compress the image ..... and the bitrate you want to use.

Then you must move on to the audio part. Again you should use an appropriate codec and bitrate.

The TV set used plays an important role as well. For example, a 52 inch 16:9 LCD/plasma flat panel will show more artifacts than a 32 inch analogue 16:9 CRT TV.

Also the media could be a notebook or a mobile phone instead of a TV...

As stated earlier, this is a difficult question to answer and it all depends on your network design to be honest. Some providers have done HD quality streams at a constant 1Mbps and viewed it on a 50+ inch plasma .... which wow'd clients. One sample provider streamed a maximum 8 sessions on a demo from 8 different countries via MPLS ..... and has a multicast stream of about 2.5Mbps in HD.

MPLS helps ..... but you have to keep in mind that your network engineers should know multicasting extremely well, as well as QoS. Plus your equipment should not slack. MPLS means nothing if your network is engineered improperly. It also means nothing if your MPLS provider is clueless ..... and or peering with someone else who is not honoring packet coloring.

Generally speaking, there are quite a few variables as to how much bandwidth is required. On ITVN and Fios systems, 1.2Mbps seems to deliver 480 equivalent video and 5.1 audio. HD content usually requires at least 5 Mbps. The biggest issue normally seen is the consistent availability of bandwidth. If there are multiple users in a household or in the same area, the bandwidth fluctuations can cause buffering and degrade the picture quality. You may also see latency issues running ping tests or excessive pings.

To be able to truely predict (IPTV) Bandwidth Requirements on equipment selection and deployment it is useful to have a base starting point for simultaneous Multi - Play Service Delivery to the Digital Home.That makes sense as a Portofolio offering and not separating the streams vs. the whole package when predicting capacity.

The initial assumption would include 2 x Standard Definition (SD) and one High Definition (HD) TV streams ..... and let's say three Voice over IP (VoIP) phones along with some streaming digital audio/music.

Using H.264 this B2C basic scenario suggests a minimum bandwidth requirement of 15 megabits (not 6 Mbps) .

This most probably will increase as HD content is becoming more ubiquitous and HD-capable displays are appearing more and more in every home.

The planning folks within your orginization have to bear in mind that there'll be about three simultaneous HD streams - usually and nowadays the average number of streams per household. This means about 24 megabits give or take... without even considering the potential future applications (e.g. video telephony , personal broadcast). With potential future applications ..... the bandwidth required to the Digital Home may go up to 50Mbps!

As for planning from an Operator's point of view - understand that IPTV is a major investment critical to the success for your orginization. Not to be confused with WebTV which is a step before (full) IPTV.

With this in mind choose your Bandwidth Service Providers (BSP) carefully. There's more to consider than just cost. A stable Tier 1 provider with a solid SLA (Service Level Agreement) and QoS (Quality of Service standard) is a MUST.

Try to work with your chosen BSP on Capacity Planning and Backhaul. Validate 4 major critical investments: 1 to 6 months , 6 months to 1 yr. , 1 yr. to 3 yrs. and 3 yrs. to 5 yrs. Try to use a MPLS backbone to the full extent that you can. (Note: you may get lot of potential applications on top of it later on as likely move to "Intelligent" BackHaul.)

Again ..... make sure you take into consideration the HD implications as mentioned above which will double your bandwidth requirements per household served.

You'll incur significant investment if you plan to provide IPTV. It is not only about Fiber Optics to the Premises/Homes ..... but also the whole backhaul design plus the transport and enablement of such capacity. Thus my suggestion(s) to approach your BSP with some type of partnering arrangement (at least in the early stages) to share the Business Case in a fairly win-win proposition (keeping your initial costs lower).

Michael is the owner of FreedomFire Communications....including DS3-Bandwidth.com and Business-VoIP-Solution.com. Michael also authors Broadband Nation where you're always welcome to drop in and catch up on the latest BroadBand news, tips, insights, and ramblings for the masses.

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The Advantages of A Satellite Broadband Service

Satellite Broadband is another form of wireless broadband that is most useful for remote areas. It is available anywhere even those areas where cable internet and DSL are not available. It is available worldwide which includes ships at sea and always on the go mobile land automobiles. This kind of broadband, offers connectivity to the home, office, business or even government agency. Satellites are not just there orbiting earth for telephone and television service - they also provide links for broadband.

The following factors affect broadband through satellite means: provider and service package purchased, consumer's line of sight to the orbiting satellite and the weather. The speed may be slower than that of a DSL or cable modem, but download speed is much faster about 10 times faster. Of course, this can change depending on the weather conditions.

So the advantages of using satellite broadband are faster surfing, downloads and instant email access All these without tying up the phone line. No need to dial or wait for internet access, satellite broadband give an instant online connection.

At this moment, satellite broadband has already partnered with phone companies to keep it alive since they are no match for the cable companies now. That would mean a troubled future if they can't increase their patrons. However, even if it has limited market for now, investments today could lead to improvements that may keep satellite services existing in the future. Satellite companies will reintroduce broadband services this summer. Their target consumers are rural customers that are being ignored by cable and DSL providers.

Satellite Broadband still has a long way to go to be at par with cable and DSL pioneers. With their plan to start in areas where there are no competitors specifically the rural market, they still have a chance to survive and to be able to succeed in the broadband business.

Russell Clark owns and operates the popular website BroadBandGuru.net

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