LinuxQuestions.org
Share your knowledge at the LQ Wiki.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie
User Name
Password
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!

Notices


Reply
  Search this Thread
Old 04-17-2011, 01:46 PM   #1
mentaaal
LQ Newbie
 
Registered: Apr 2011
Posts: 2

Rep: Reputation: 0
Cannot access certain websites


Hi guys, I am new to this forum and am hoping you can help me out of a wee pickle. I have been using Linux mint for a while now and have noticed that I cannot access certain websites on it. I am reasonably new to linux but not to computing in general. The website I am trying to access on firefox is http://vle.wit.ie which is a college e-learning support site. The error I get is: Unable to connect
Firefox can't establish a connection to the server at vle.wit.ie.

I have 2 other computers at home and both are able to access the site no problem. Even more stangely, if I set up a ssh proxy to one of the other machines that can access the site it works no problem. (Basically a ssh -D socks proxy)

I have tried clearing firefox's cache, resetting the pc and router, and disabling add-ons but to no avail. I am running linux mint x64. DNS name resolution does not seem to be a problem as I am able to resolve the name using 'host vle.wit.ie'. The only change that I have made to default settings in about:config is to proxy dns requests but this is not the problem as defaulting it didnt resolve the problem.

Thanks
 
Old 04-17-2011, 02:09 PM   #2
T3RM1NVT0R
Senior Member
 
Registered: Dec 2010
Location: Internet
Distribution: Linux Mint, SLES, CentOS, Red Hat
Posts: 2,385

Rep: Reputation: 476Reputation: 476Reputation: 476Reputation: 476Reputation: 476
@ Reply

Am using Linux Mint as well and as I am able to access the site you mentioned it appears that it is not a Linux Mint issue ;-)

You said that it does not appear to be a resolution issue, it means you tried to ping that site or nslookup that site I guess. Did you try accessing the site via IP from Firefox?

Try this http://193.1.193.187 which appears to be the address of the site you are trying to access.

Also if Firefox work with the above mentioned IP address then it has something to do with the name resolution. If it is unable to connect even using IP address then there is some problem with firefox connecting to this site. Usually Unable to connect message comes up when the browser unable to find the site and finally times out.

I also found that the site you are trying to access is https. It might be possible that Firefox taking time to convert http session to https. So try accessing the site directly using https: https://vle.wit.ie.
 
Old 04-17-2011, 02:33 PM   #3
r_s
Member
 
Registered: May 2009
Distribution: slackware, fedora, ubuntu
Posts: 98

Rep: Reputation: 21
check the http headers to debug the problem.
https://addons.mozilla.org/en-us/fir...-http-headers/
 
Old 04-17-2011, 03:44 PM   #4
mentaaal
LQ Newbie
 
Registered: Apr 2011
Posts: 2

Original Poster
Rep: Reputation: 0
THanks for the great advice guys and thankfully I found the problem!
I had forgotten that I had installed ipblock some time ago and that was the problem. I completely forgot about it because it starts up silently with no icon.

The http headers addon is definitely a keeper though!

Thanks
 
Old 04-17-2011, 04:25 PM   #5
T3RM1NVT0R
Senior Member
 
Registered: Dec 2010
Location: Internet
Distribution: Linux Mint, SLES, CentOS, Red Hat
Posts: 2,385

Rep: Reputation: 476Reputation: 476Reputation: 476Reputation: 476Reputation: 476
@ Reply

Glad to hear that it has been resolved.

Please mark this thread as solved.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Can`t access certain websites theuns247 Linux - Server 4 12-09-2009 03:29 AM
can't access most websites with navigators cyrilng Linux - Networking 2 10-19-2007 01:38 AM
Cant access some websites with new router dellcom1800 Linux - Networking 11 04-12-2007 06:42 PM
unable to access certain websites lumba Linux - General 9 02-08-2006 11:23 PM
Can't access websites pow2k2 Linux - Networking 7 12-26-2002 10:09 PM


All times are GMT -5. The time now is 05:12 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration