Go Back   HowtoForge Forums | HowtoForge - Linux Howtos and Tutorials > Linux Forums > Server Operation

Do you like HowtoForge? Please consider supporting us by becoming a subscriber.
Reply
 
Thread Tools Display Modes
  #1  
Old 18th March 2012, 13:23
usmanmalik usmanmalik is offline
Junior Member
 
Join Date: Mar 2012
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Question CentOS 6.2 Or Server Problem?

Hello everyone,

I am experiencing very strange problem never had before.

A Small local network with eth1 as WAN static connected to DSL Router and eth0 as LAN 192.168.100.254

Squid3 with CentOS6 on 8080 port transparent and simple masquerading and routing iptables.

I had configured mac address with ip binding but it is not very efficient have removed it now.

Used Named caching dns but now using pdnsd as dns server and no dhcp static ip assign to clients.

The problem is the users experience limited connectivity on their end (Windows OS) with yellow caution icon on the network connection icon. We can ping the server i.e. 192.168.100.254 but can not do any dns lookups or browsing then it start working normal automatically after 10-15mins.

Sometimes it does not even work for hours. The most strange thing is the other clients they are using the internet.

P.S I tried changed NIC's , Switch , Cables and multiple END-Hosts.

Could someone please advice what is the problem.

Thanks.
Reply With Quote
Sponsored Links
  #2  
Old 18th March 2012, 19:08
phinex phinex is offline
Junior Member
 
Join Date: Mar 2012
Posts: 6
Thanks: 2
Thanked 0 Times in 0 Posts
 
Default

Quote:
Originally Posted by usmanmalik View Post
Hello everyone,

I am experiencing very strange problem never had before.

A Small local network with eth1 as WAN static connected to DSL Router and eth0 as LAN 192.168.100.254

Squid3 with CentOS6 on 8080 port transparent and simple masquerading and routing iptables.

I had configured mac address with ip binding but it is not very efficient have removed it now.

Used Named caching dns but now using pdnsd as dns server and no dhcp static ip assign to clients.

The problem is the users experience limited connectivity on their end (Windows OS) with yellow caution icon on the network connection icon. We can ping the server i.e. 192.168.100.254 but can not do any dns lookups or browsing then it start working normal automatically after 10-15mins.

Sometimes it does not even work for hours. The most strange thing is the other clients they are using the internet.

P.S I tried changed NIC's , Switch , Cables and multiple END-Hosts.

Could someone please advice what is the problem.

Thanks.
I've had the same problem ( using Smoothwall) , It happened only for two laptops using Visa ... Now it's ok, could not figure out what was the problem.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sending mail ISPConfig 3 but not receivind catza Installation/Configuration 20 19th May 2010 13:47
BIG Problem Postfix issue admins Installation/Configuration 11 13th November 2009 11:05
I don't recieve mail. privir Installation/Configuration 2 3rd June 2009 23:08
Centos 5.2 + ISPConfig 3 tutorial - Problem with email tanakskool Server Operation 1 3rd June 2009 17:22
The Perfect Setup Suse 9.3 - Postfix problems new_bee05 HOWTO-Related Questions 20 25th November 2005 03:30


All times are GMT +2. The time now is 05:31.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.