Some sites not opening

[subinvarghesein]

Hai,I cant open few sites like sourceforge.org etc on my computer but at the same time I can open the other sites like yahoo, gmail etc. When I used a proxy site to open sourceforge.org, it opened. Then why do you think that sourceforge.net is not opening at my side. When I try to open, it says that the connection cant be established. :huh:

 

[essbebe]

members/subinvarghesein/
Welcome to Broadbandforum.in
A pretty long user name !
Here we need more details to offer suggestions/solutions.

TRY NO 4 first.

Details marked * required always.
A:* Problem: sudden ? working ok earlier.?
B:* Modem/router: Model/make _______________________
C: Computer Knowledge: Layman/average/expert/ etc.________________
D: ISP: BSNL ( silly to ask ! may be using another ?)_____________________
E: Firewall Programs used : ______________________
F: OS ________
etc

Para two :
Only one website not available. Seems a firewall block..
Start/ RUN/ type/ cmd type tracert sourceforge.org
Please give details here.
You have mentioned it is opening via proxy server.
I was going to suggest tinyurl.com

2. If using IE browser download FireFox and try.
If Ok security settings in IE ( blocked sites list ) to be checked.

3. Disable all Firewall programs for short period and try.

4. Change MTU to 1492 or 1480 or lower and try. ( if many sites not accessible)
DRTCP
DRTCP: How do I use it, & what are all these settings?
Please give feedback +ve or -ve.
:

 

[mayank7_d]

couldn't it just be a dns server problem? :huh:

 

[subinvarghesein]

couldn't it just be a dns server problem? :huh:


ya, I too believe that this could be the problem. but since i dont have the sufficient knowledge in networking, I cant say that its is the reason.

 

[essbebe]

ya, I too believe that this could be the problem. but since i dont have the sufficient knowledge in networking, I cant say that its is the reason.

TRY THIS:

Start / Network Local Area Connection.
A menu will appear
Select Properties
A new page will appear
Go down the list and select TCP/IP
Click
properties.
In the new page
under dns
enter ( open dns instead of existing entries make note of it !)
208.67.222.222
and 208.67.220.220
apply
Try again ! If you need screen shots it can be given .
Para two:
You have not given the modem model number. in which you can
make these entries also. .

 

[Motorazor143]

yeah DNS server will solve your problem..MTNL's default DNS servers are real buggy one's.They don't seem to work well most of the times.

 

[superprash2003]

a simple way to find out if its a DNS problem or not, is to ping the website , get its ip and access via ip, if it works via ip then its a DNS problem.. if the page doesnt load via ip too , then its not a DNS problem..example : sourceforge.net .. So first open command prompt or terminal and type ping sourceforge.net , you would get a similar output prash@prash-laptop:~$ ping sourceforge.orgPING sourceforge.org (216.34.181.60) 56(84) bytes of data.64 bytes from ch3.sourceforge.net (216.34.181.60): icmp_seq=1 ttl=238 time=326 ms64 bytes from ch3.sourceforge.net (216.34.181.60): icmp_seq=2 ttl=238 time=326 msthen note the ip 216.34.181.60 .. open your browser and try to open 216.34.181.60 ( instead of typing sourceforge.net) .. now if the sourceforge.net opens when typing the ip , then its a DNS problem.. if sourceforge.net doesnt open inspite of giving the ip, then its some other problem ( mostly MTU) and DNS is not to be blamed..

 

[ski_power]

or else it might be an MTU problem as well...some sites don't really like an MTU of the default 1500 that comes with the router.Try setting it to 1492, as it's mostly the default for all pppoe connections.