The provider confirmed to me that the ip remains static and i get it assigned as 124.123.163.164/255.255.192.0
Default Gateway:124.123.168.1
and some DNS entries.
Because this is a very different situation than what I originally thought we were talking about, I've completely replaced my previous answer. If anyone is curious what I deleted, the previous revisions are still out there, of course.
@Anirudh
While I'm not very skilled at such things, I did try to do a whois.net lookup of the IP they gave you, 124.123.163.164
. It appears to be registered with "Asia Pacific Network Information Centre" in Milton, Australia. But the contact info points to "Beam Telecom", "Beam Cable System", and/or "Beam Telecom Pvt Ltd", 8-2-610/A, Road No - 10 Banjara Hills, Hyderabad, India.
The subnet mask they gave you, 255.255.192.0
, implies that your IP and the 16,382 (?) other IPs in the range 124.123.128.1
to 124.123.191.254
are on the same subnet of the larger Internet. In other words, all these public IPs are in some sense "local" to your IP. That's a relatively big subnet which I find surprising. It makes me wonder how their network actually functions. Oh, well.
What you appear to have is a one static IP which is on the public Intenet. In other words, you don't have a local LAN at all, just an IP which gives you direct, unfiltered ... and unprotected! ... access to the Internet. This would also mean there is no DHCP server so you would need to manually enter the IP configuration data ... the IP address, the default route, and the DNS servers ... into the one computer you could connect to the Internet using this IP address.
So, yes, I would recommend you obtain another router and put it between you and the free rolling chaos which is the unfiltered public Internet. Put your systems on a local LAN behind a router which uses (at least) NAT, SPI and DHCP.
You would then enter the one static IP you were given as the WAN information for the router, connect the router via its WAN port to the ethernet port from your ISP, and then connect your systems to the router LAN ports. Your computer(s) would then have local LAN IPs assigned to them by the router's DHCP.
I would also recommend ignoring the DNS servers your ISP gave you and going with one of the public DNS providers such as OpenDNS or Google DNS. Maybe it's just me, but I like having even a small bit of extra filtering between me and the hoards of malicious sites out there these days.
As for the router itself, there are two ways you could go.
You could, as you mentioned, obtain a home router which includes wireless.
But you could also use a wired home router, connect your Beetle to it, and then use the Beetle for wireless access. This is what I thought you were trying to do in my previous answers.
I mention this as an option because you might know someone who has a wired router they no longer use which you could re-purpose. Depending on your situation, it might be a quicker or cheaper solution for you.
The important thing is to get a router, either wired or wireless, which gives you some isolation from the public Internet by using NAT plus "stateful packet inspection" (SPI) to create your own LAN. The router's DHCP would also save you the hassle of entering static configuration info and would allow multiple computers to use/share your Internet access at the same time.
good going guys, thanks a lot for help. @irrational john, @wil: i will try the updated options tomorrow. but currently i brought another modem Linksys WAG120N and i was able to do what john suggested (assign the same static ip to that modem) and the internet light started glowing, but then i am unable to browse sites from my computer. Is there any further change i have do? I think i am half way there with the new modem. Guys can u please help. Thanks – Anirudh Goel – 2010-06-30T19:09:56.857
Unless I have mistaken the model number, you have got yourself another modem router and not a standard router. – William Hilsum – 2010-06-30T19:28:18.563
yeah i realized that, after talking with the customer care. So finally i am going to get a Wireless Router tomorrow. – Anirudh Goel – 2010-06-30T19:54:45.213
Just make sure you get a router with an ethernet WAN port, not an ADSL (phone) port or a coax cable port. The most common setup is 5 ethernet ports, 4 LAN and 1 WAN. The ports should all be identical except possible for a color code. (The WAN is sometimes yellow to distinguish it). Before they try to sell you a Linksys WRT120N you might want to look at this review http://www.smallnetbuilder.com/wireless/wireless-reviews/30900-linksys-cisco-wrt120n-reviewed
– irrational John – 2010-06-30T22:18:46.353Another point. You should realize that you will not see an increase in wireless speed from an 802.11n router unless you also have clients/devices which support 802.11n. If all the devices you are going to use with wireless can only use 802.11g then you might save money and get the same performance by using a slightly older 802.11g router. Also beware of the so-called "150" single band N routers. It's marketing to make you think you're getting the benefits of N wireless when in fact you're getting a slower, "crippled" IMO, non-Wi-Fi certified router. Caveat emptor! – irrational John – 2010-06-30T22:25:24.840
<sigh> Of course, I meant to say "'150' single stream N routers" not "'150' single band N routers" above. How can anyone ever take me seriously again after a mistake like that? – irrational John – 2010-06-30T23:25:18.953
@irrational john: can you please have a look at this: http://superuser.com/questions/159630/could-not-find-dhcp-daemon-to-get-information-on-belkin-g-wifi-router
– Anirudh Goel – 2010-07-03T10:04:37.813