I'm using Ubuntu 10.04 64-bit edition (native install) along with MS Windows 7.
I have a BSNL connection (India) and am using a PPPoE dialer to connect in Windows.
Without using any proxies, I can easily surf some pages in Firefox on Windows like
These pages however cannot be opened in Firefox, Chromium, Google Chrome or Opera in Ubuntu.
In Ubuntu, I'm using the Network Manager (installed by default). Have created a wired connection.
In tboth the OS, I am given an ip by my ISP.
They can be easily opened using proxy sites. But I want to open them natively like I do on Windows.
So, how do I go about it?
Thanks in advance, for your kind help.
Individual troubleshooting till now:
pinged the above sites, success, 100% packets received for yahoo, none for indianrail.gov.in. Error message is: From 126.96.36.199.static-delhi.vsnl.net.in (188.8.131.52) icmp_seq=15 Packet filtered. Note that I recieve all pings for the same site in Windows.
Disabled ipv6 in fiirefox, no go.
disabled ipv6 in eth0, no go.
tried various proxy sites, success all the sites open in a jiffy.
tried setting opendns in eth0 as well as wired connection., no go.
tried setting google dns in eth0 as well as wired connection., no go.
Tried changing MTU as suggested by Iowan. Found value 1440 giving the best response in ping. However, the sites don't open, no go.