Help..Server Intermitently can't be accessed

Sony / Vgn-sz433n_b
September 16, 2009 at 11:14:51
Specs: Microsoft Windows Vista Business, 1.833 GHz / 2045 MB
I have a very annoying problem with my PC. Intermitently, I can't access my mail and web server while the server itself actually is up and can be accessed with any other PC and Blackberry.
Out of my frustration, I had reformat my PC and reinstall the OS from the fresh but yet the problem still persists.

When the server unaccessible, Ping will get message "Could not find host" and IE will give the usual blank space/check connection error.
It happens on my email and web server (both host under Linux/Apache) system.

But strangely, sometimes after a while (few hours), it started to reconnect again.

I have done : ipconfig/flushdns and reformat the whole system, ran adware, malware, antvirus can't find any problem.
Other than my mail/web server, I can connect with any other website on my PC with no proble,, so the problem ONLY in connecting with my specific server.

Please anybody help me.....


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#1
September 16, 2009 at 11:23:23
" Ping will get message "Could not find host""

is ping successful if you ping by ip address?
what are you pointed to for dns?


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#2
September 16, 2009 at 11:27:32
yes. it works. I ping the Shared IP and it given me the reply.
Sorry how do I point the DNS? I am not too network savvy

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#3
September 16, 2009 at 11:55:06
On your workstation go Start and in the Run line type cmd then hit enter.

You are now in a black box.

Type ipconfig /all and hit enter.

It will look something like this [mine is wireless vs wired]

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/W
nection
Physical Address. . . . . . . . . :
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.0.105(
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Wednesday, Sep
Lease Expires . . . . . . . . . . : Thursday, Sept
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 204.130.255.3
64.122.32.71
NetBIOS over Tcpip. . . . . . . . : Enabled

It is the DNS server ip I am interested in.


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Related Solutions

#4
September 16, 2009 at 18:01:43
I have
61.247.0.2
202.73.99.4
61.247.0.4

I ping all 3 DNS and it gives me respond


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#5
September 16, 2009 at 20:39:00
You have a name resolution problem

Computers talk in ip addresses but we talk in names like My Home PC. Name resolution is where the machines change name to ip address and back again.

You are pointed to the ISP dns server. Only if you had a local dns server, and it knew of your local Apache servers name and ip, would you be able to resolve name to ip or visa versa.

Before I bore you with further explaination I would suggest you add an entry to your hosts file on the workstation that lists your Apache server name and ip.

Here is a link.
http://kickenhardware.net/forum/sho...

In this example they show how to block a domain name. In your case you want to add your apache ip and name in the format required.

Once you edit and save you have to reboot to become active.


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#6
September 16, 2009 at 21:24:11
sorry, the link is down, I can't access it.

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#7
September 17, 2009 at 08:09:00
? link works just fine.

or google how to edit the hosts file.


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#8
September 17, 2009 at 08:22:28
OK. I got it, now I have added 120.50.35.152 and my domain name on the host file. Hope it will fix it.
Will keep you updated....
Thanks a lot.

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#9
September 17, 2009 at 09:53:07
You were to add the
ip address and host name of the apache server
not your domain name.

I was under the impression you were running your own internal web/mail server. That ip doesn't look right for a publically and privately accessed server.


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#10
September 17, 2009 at 10:03:16
Actually I am running co-hosting service in Singapore. After I checked on whois, I got this.

Name Server: NS1.LINUXHOSTINGSINGAPORE.COM (has 82 domains)
Name Server: NS2.LINUXHOSTINGSINGAPORE.COM (has 82 domains)

Server Type: Apache/2.2.11 (Unix) mod_ssl/2.2.11 OpenSSL/0.9.8e-fips-rhel5 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635
IP Address: 120.50.35.152

What should I write?


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#11
September 17, 2009 at 11:53:17
120.50.35.152 is the correct ip to linuxhostingsingapore.com
so the hosts entry would be
120.50.35.152 [space] www.linuxhostingsingapore.com

Though I now suspect its your connection not name resolution since this is not a local hosted solution but via the internet.

This thought is supported by the fact you couldn't get to the link I provided.

It is the connection between you and the hosting that is the issue.


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#12
September 17, 2009 at 18:03:55
I was having connection problem yesterday thru my other ISP but now the link can be opened.
Now I have added 120.50.35.152 [space] www.linuxhostingsingapore.com on the Host file.

Let see if this will solve the problem.... keep my fingers cross


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