Google DNS

[Chhatoi Pritam Baral]

Google DNS claims to be faster. It would be nice if it really is. Is anyone using it in d insti?

[Chhatoi Pritam Baral]

Google DNS claims to be faster. It would be nice if it really is. Is anyone using it in d insti.

 

Regards,
Chhatoi Pritam Baral

[praveen kumar pendyala]

Can we  use outside DNS in IIT ? How does all these actually work ?I mean to ask a map of our netmon network right from sending a request from our machine till we get back the required data.

--
-Praveen Kumar Pendyala,

 Department of Electrical Engineering.

[Saif Hasan]

In order to use outside DNS...you have to enter the proxy as 10.201.13.50 instead of netmon.iitb.ac.in ....
because whenever you request the the webpage you first look up for netmon.iitb.ac.in and if your dns server is outside the iitb then you can't access it, because you don't know address of netmon.iitb.ac.in

but I got a little problem...the internal sites are unable to open while using google DNS...Also google DNS will render the IP address of servers of iitb which IIT DNS server allows from outside....

ie. you can't get the ip address of the sites like asc.iitb.ac.in etc which are only accessible from inside

--
You received this message because you are subscribed to the Google
Group for the Web and Coding Club of IIT Bombay.
The website for the club is http://gymkhana.iitb.ac.in/~science.
To post to this group, send email to wncc...@googlegroups.com
To unsubscribe from this group, send email to
wncc_iitb+...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/wncc_iitb?hl=en_US?hl=en

--

SAIF HASAN

Undergraduate Student
Department of Computer Science & Engineering
IIT Bombay, 400076

[Nivvedan S]

Google DNS would not give the local addresses for the internal sites.
To access these sites with the external IP, we would have to go
through our proxy and our proxy blocks all connections to internal
sites in order to reduce the load.

We can just use 10.200.1.11 as the alternate DNS and the Google DNS as
primary. This would settle the issue.

Nivvedan
Undergraduate Student
Department of Computer Science and Engineering
IIT Bombay

On Apr 4, 2:24 pm, Saif Hasan <saifhha...@gmail.com> wrote:
> In order to use outside DNS...you have to enter the proxy as 10.201.13.50
> instead of netmon.iitb.ac.in ....
> because whenever you request the the webpage you first look up for
> netmon.iitb.ac.in and if your dns server is outside the iitb then you can't
> access it, because you don't know address of netmon.iitb.ac.in
>
> but I got a little problem...the internal sites are unable to open while
> using google DNS...Also google DNS will render the IP address of servers of
> iitb which IIT DNS server allows from outside....
>
> ie. you can't get the ip address of the sites like asc.iitb.ac.in etc which
> are only accessible from inside
>
> On Mon, Apr 4, 2011 at 11:55 AM, praveen kumar pendyala <
>
>
>
>
>
>
>
>
>
> praveendat...@gmail.com> wrote:
> > Can we  use outside DNS in IIT ? How does all these actually work ?I mean
> > to ask a map of our netmon network right from sending a request from our
> > machine till we get back the required data.
>
> > --
> > -Praveen Kumar Pendyala,
> >  Department of Electrical Engineering.
>
> >  --
> > You received this message because you are subscribed to the Google
> > Group for the Web and Coding Club of IIT Bombay.

> > The website for the club ishttp://gymkhana.iitb.ac.in/~science.

[Susmit Saraswat]

For the record, it actually is. Both ping times, normal response times and packet loss rates trump the DNS from my ISP, or OpenDNS.

On Sun, Apr 3, 2011 at 7:49 PM, Chhatoi Pritam Baral <chhato...@gmail.com> wrote:

Google DNS claims to be faster. It would be nice if it really is. Is anyone using it in d insti?

--
You received this message because you are subscribed to the Google
Group for the Web and Coding Club of IIT Bombay.

The website for the club is http://gymkhana.iitb.ac.in/~science.

[praveen kumar pendyala]

That way can we get access to all the banned sites ??

[Sudarshan Wadkar]

no, netmon bans them via proxy, not via DNS

> --
> You received this message because you are subscribed to the Google
> Group for the Web and Coding Club of IIT Bombay.

> The website for the club is http://gymkhana.iitb.ac.in/~science.

> To post to this group, send email to wncc...@googlegroups.com
> To unsubscribe from this group, send email to
> wncc_iitb+...@googlegroups.com
> For more options, visit this group at
> http://groups.google.com/group/wncc_iitb?hl=en_US?hl=en
>

--
-Sudarshan Wadkar
Research Assistant & System Administrator
High Performance Computing Center
IIT Bombay, Powai, Mumbai 400 076

"Success is getting what you want. Happiness is wanting what you get."
- Dale Carnegie
"It's always our decision who we are"
- Robert Solomon in Waking Life
"The Truth is The Truth, so all you can do is live with it."
- $udhi :)

[Chhatoi Pritam Baral]

On Mon, Apr 4, 2011 at 21:16, praveen kumar pendyala <pravee...@gmail.com> wrote:

That way can we get access to all the banned sites ??

No, we still use netmon, so no. 

[Saif Hasan]

no way...they are banned through ip addresses not through their human friendly names....

--
You received this message because you are subscribed to the Google
Group for the Web and Coding Club of IIT Bombay.

The website for the club is http://gymkhana.iitb.ac.in/~science.

To post to this group, send email to wncc...@googlegroups.com
To unsubscribe from this group, send email to
wncc_iitb+...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/wncc_iitb?hl=en_US?hl=en

[harshit mittal]

I can't completely understand as to how it is exactly done.

So in my view, whenever I make a request for a site www.example.com, a DNS request is made to determine the IP address of the domain. say the IP is 12.53.43.43. Now my browser would try to make connection with the server at this IP address which is intercepted by netmon and the request goes through if the site does not belong to the blocked lists.

However, when I directly enter the IP address of the site in the browser the request is completed even if the IP corresponds to a host name belonging to blocked site. How is that possible?

--

Cheers!

Harshit

[harshit mittal]

Try opening www.kproxy.com and it says Access Denied.

Now enter the ip address of the domain name (as found in ping) (66.232.107.140) and it works.

--

Cheers!

Harshit

[Aditya Mehta]

You can try using IP addresses, it works afaik. I think the block is using some key words, but not sure.

:') Tears of Joy

[Ravi Bhoraskar]

@saif. Actually that's not true. Try getting the IP of a banned site (say by using ping), and then put it in the browser. If the site is big enough to be hosted on a dedicated server, it will work. (At least it used to work a couple of months ago).

On Fri, Apr 8, 2011 at 5:33 PM, Saif Hasan <saifh...@gmail.com> wrote:

--
Ravi Bhoraskar
Junior Undergraduate

Computer Science and Engineering
IIT Bombay

There is a fine line between genius and insanity. I have erased this line.

[Chhatoi Pritam Baral]

On Fri, Apr 8, 2011 at 17:33, Saif Hasan <saifh...@gmail.com> wrote:

no way...they are banned through ip addresses not through their human friendly names....

 

I have noticed that a few blocked sites indeed open up when accessed via IP address, though many Don't. 

[Saif Hasan]

Yeah I got that....thanks for correcting me....