Unable to block three particular websites through /etc/hosts

TheIndependentAquarius · 05-10-2012, 07:24 AM

http://www.dpreview.com/
http://www.kodakgallery.com/gallery/welcome.jsp
http://www.fotolia.com/

All sites specified excluding these three have
been blocked successfully.

How to block these three too now?
Is there some particular way to specify certain
website names?

/etc/hosts:

Code:

#                                                                                                                            
# hosts         This file describes a number of hostname-to-address                                                          
#               mappings for the TCP/IP subsystem.  It is mostly                                                             
#               used at boot time, when no name servers are running.                                                         
#               On small systems, this file can be used instead of a                                                         
#               "named" name server.                                                                                         
# Syntax:                                                                                                                    
#                                                                                                                            
# IP-Address  Full-Qualified-Hostname  Short-Hostname                                                                        
#                                                                                                                            

127.0.0.1       localhost

# special IPv6 addresses                                                                                                     
::1             localhost ipv6-localhost ipv6-loopback

fe00::0         ipv6-localnet

ff00::0         ipv6-mcastprefix
ff02::1         ipv6-allnodes
ff02::2         ipv6-allrouters
ff02::3         ipv6-allhosts
127.0.0.2       linux-y3pi.site linux-y3pi
192.168.16.86   linux-y3pi.site linux-y3pi
127.0.0.1       1x.com
127.0.0.1       photo.stackexchange.com
127.0.0.1       dpreview.com
127.0.0.1       camshotsindia.com
127.0.0.1       500px.com
127.0.0.1       photo.net
127.0.0.1       fotolia.com
127.0.0.1       deviantart.com
127.0.0.1       kodakgallery.com

and yes, I did run /etc/init.d/nscd restart
after saving the hosts file. Didn't help.

Code:

# uname -a && cat /etc/issue
Linux linux-y3pi 2.6.34-12-desktop #1 SMP PREEMPT 2010-06-29 02:39:08 +0200 x86_64 x86_64 x86_64 GNU/Linux
Welcome to openSUSE 11.3 "Teal" - Kernel \r (\l).

descendant_command · 05-10-2012, 07:36 AM

You have listed dpreview.com not www.dpreview.com

TheIndependentAquarius · 05-10-2012, 08:51 AM

But then shouldn't that apply to all other websites too?
Why only dpreview?

jefro · 05-10-2012, 09:42 AM

Put both in and see if it works.

I guess dns cache deals might be in effect. Might have to restart browser to take effect changes.

Test with nslookup or dig too both www and without.

acid_kewpie · 05-10-2012, 09:47 AM

You're blocking a site that's even in your own signature? Oh the irony... do as I say, don#'t do as I do, huh?

The other "www" domains may well be listed in DNS as CNAME for the non-www version.

TheIndependentAquarius · 05-10-2012, 11:23 PM

Putting www. in front of dpreview helped.

I curious to know why was it needed for the
dpreview and not for 500px?

Quote:

Originally Posted by acid_kewpie

You're blocking a site that's even in your own signature? Oh the irony... do as I say, don#'t do as I do, huh?

Am doing this on my own computer in office.
Problems of addictions.

descendant_command · 05-11-2012, 06:47 PM

As stated above, most likely www.500px.com is a cname to 500px.com so your dnsclient looks up www.500px.com, is redirected to 500px.com which it looks up and finds a match in your /etc/hosts to 127.0.0.1 = effectively blocked.
If www.500px.com was an A record pointing to a valid IP you would also resolve that normally.