Can`t access certain websites

theuns247 · 12-08-2009, 06:27 AM

Hallo!

I`ve got a CentOS server running Bind, Postfix & Squid.
Everything worked fine untill 3-days ago. No updates or any work were done on the server, but all the sudden certain websites could not be accessed. (www.cracks.am | www.evony.com .......)
I`ve disabled Squid, but the problem is still there.
The DNS looks OK. If I ping the site from the command line, I get a response!
I`ve got no idea what is going on!

HELP PLEASE!!!

repo · 12-08-2009, 06:31 AM

what is the output from

Code:

nslookup www.cracks.am 
telnet www.cracks.am 80

edenCC · 12-08-2009, 11:00 AM

what's the return code when accessing these two websites?
They may block your IP address for some reason.. you can check the HTTP return code by this command:

Code:

shell$ wget --spider http://www.cracks.am

Here's an example:

Code:

shell$  wget --spider http://www.admon.org/
--00:59:22--  http://www.admon.org/
...
Connecting to www.admon.org|94.75.214.118|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/html]
200 OK

Please pay attention to the line, it's the code, 2xx means OK, while 4xx means you might get blocked already.

theuns247 · 12-09-2009, 01:47 AM

--08:33:36-- http://www.cracks.am/
(try: 2) => `index.html'
Connecting to www.cracks.am|95.143.192.9|:80... connected.
HTTP request sent, awaiting response... Read error (Connection reset by peer) in headers.
Retrying.

I`ve also tried the ns lookup:

[user@mx ~]# nslookup www.cracks.am
Server: 127.0.0.1
Address: 127.0.0.1#53

Non-authoritative answer:
Name: www.cracks.am
Address: 95.143.192.9

repo · 12-09-2009, 02:29 AM

Like edenCC suggested, it can be your IP or IP range is blocked
You could try using a proxy.