March 2006

PHP4 or PHP5 do not have any problem to execute php3 files. The only problem is you need to force PHP4 or PHP5 to understand .php3 file extension as a php script.


By default remote access to the MySQL database server is disabled for security reasons. However, some time you need to provide remote access to database server from home or a web server. This post will explain how to setup a user account and access a mysql server remotely on a Linux or Unix-like systems.


For UNIX/Linux server you can use rsync command to keep data sync’d between two servers. rsync also works under Windows NT/2003 server but it will take lots of time to setup. For Microsoft Windows 2003 server use robocopy tool, to sync files between two windows server. You can download robocopy.exe and other files from Windows […]


A module (device driver) is causing Linux server to hang, so we replace Ethernet card with Intel LAN card. The old module still gets loaded. It is causing problem. So I decided to turn off module forever (I am not going to recompile kernel to get rid of this shity module). The Linux kernel v2.6.xx […]


Few days back I wrote about how to improve performance with query caching in MySQL. Someone email me about more questions. How does query caching in MySQL helps improve performance of dynamic web site? First query cache is new and added in MySQL v4.x.x version only so if you are using old version of MySQL […]


Load balancing is way to provide to handle the load of the large number of visitors particular website or network service receives. It helps provide redundancy to your website. There are several ways to accomplish load balancing: * Use of Linux Virtual Server * Use of layer 4 routers * Round robin DNS with squid […]


Linux firewall, iptables has the capability to log network activity to the syslog system. This is very useful to detect problems as well as to generate reports of network activity. You can also use this to detect all intrusion detection or unwanted incoming/outgoing connections etc. LOG module To enable logging option you need to use […]

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