See Open Ports in a Linux PC ( Localhost/Remote Machine)

I am writing a small post that will help you just to see what ports are open in  a particular remote/local machine.we are going to use tool name as nc.To install it , open your terminal and type as # yum install nc                              After installing , you can use it withnc -zv xxx.xxx.xxx.xxx <Port> ...

Tutorial on .htpasswd and .htaccess with apache(httpd) in Linux

If there is a situation that have to dealt with like a public website but with some secret information.How can we protect the information ? .We can use .htpasswd and .htaccess in that time.How  ? Lets see................Open your terminal and type as                        vim /etc/httpd/conf/httpd.confand find line no : 334 to 338....

Make the system Time Zone persistent across REBOOT in Linux

Hi Guys! Are tou tired of fixing the Time Zone across reboot in your Linux box..?  Here are three simple steps for you to fix the issue. In this example we are fixing the time zone to IST. Similarly you can set it to any Time Zone of your choice. Step:1 Set the hardware clock to IST time zone # ln -sf /usr/share/zoneinfo/Asia/Calcutta /etc/localtime Step:2 Verify the hardware clock is set...

Fixing SELECT command denied to user 'user'@'x' for table proc

Open your hibernate.cfg file  and append this below string to your connection string.                                Use Procedure Bodies=fal...

How To do Software RAID using mdadm in CentOS

Today I am writing about how to create Software RAID. Creating Software RAID is pretty easy. All we need either 3 equal size partitions on different harddisks or 3 equal size harddisks.        In my approach , I am doing this in VmWare by choosing 3 virtual harddisks with equal 1 GB             Size. Our first step is we need to make those harddisks...

VSFTPD - Passive mode port configuration

If your FTP got configured in Passive mode then to allow data transfers , you must to this.##########/etc/vsftpd/vsftpd.conf################3pasv_min_port=49152pasv_max_port=65534#############/etc/sysconfig/iptables-config##############IPTABLES_MODULES="ip_conntrack_f...

Virtual Hosts in Apache -Linux

############################Listen 192.168.56.150:80Listen 192.168.56.151:81############################So above two lines are stands for IP based virtual hosting and as well as Port based Virtual Host.The virtual Host which listens to the 1st IP will browse throughh port 80 but other will listens and browse through port 81 only.Now We have to configure Virtual Hosts#########################################<VirtulHost...

Rename Database in MySQL

Today I am writing about how to rename MySQL Database.So If you want to rename a database in MySQL dont forget taking backup of your Views,Procedures and Functions of current database. Because while you renaming changes wont apply for Views,Procedures and functions.After you have taken the backup , We can go for renaming with the command below.RENAME TABLE old_db.table TO new_db.table;Here old_db...

Famous SELinux Contexts

1. httpd SELinux context                                        chcon -v --type=httpd_sys_content_t /path/to/dir2.httpd SELinux context                   chcon -Rv --type=httpd_sys_content_t /path/to/dir3. Restore old/default context   ...

How to set the primary IP address of a Windows Server 2008 R2

Hi All..! Finally, today I got a solution for the problem continuously facing, whenever we add a new IP to our servers (Windows 2008 server), the primary IP address ( the default outgoing IP) is getting changed automatically which in turn causing lot many issues later. Here is the solution. http://www.aip.im/2013/01/how-to-set-the-primary-ip-address-of-a-windows-server-2008-r2/ This...