Also, I also encounter problem accessing a particular web site : www.ura.gov.sg
Not sure if i have missed out add-on to my firefox browser. Pls kindly advise.
Well, this was a difficult one to track down, but I was sure I had read something like this recently, but it took me an age to track down the thread.
There's nothing wrong with your firefox, there's something wrong with their firewall.
Here's the relevant thread:
The solution is in post #6, and it works.
At first I couldn't load the link you posted, but after giving the command
sysctl -w net.ipv4.tcp_window_scaling=0
(and you'll need to be root to do this) the site loaded fine.
To become root on an ubuntu system, in a terminal, issue the command
and give your
login password when asked. Then give the comand as above. Please check your spelling / copying very carefully before you press <RETURN>
While I'm here, to edit that file for your printer, you need to give the following commands in a terminal:
Become root (as above). Notice how your terminal prompt has changed.
Back up the original file:
cp /etc/udev/rules.d/40-basic-permissions.rules /etc/udev/rules.d/40-basic-permissions.rules.BAK
Open the file with the nano
Edit the file.
Save the changes with "WriteOut" which is <CTRL><o> and then "Exit" which is <CTRL><x>
You'll need to restart udev
so the changes are noticed:
Close the terminal.
Plug your printer in and see if you can configure it.
Welcome to LQ!