Internet Protocol Version 6 (IPv6) is a network layer protocol that enables data communications over a packet switched network. Packet switching involves the sending and receiving of data in packets between two nodes in a network.
Sometimes you may get old web results and old webpages even after updating the web pages. That means, DNS cache holds the problem. To solve this problem, execute below command to flush DNS cache. # /etc/rc.d/init.d/nscd restart
A switched-mode power supply (switching-mode power supply, SMPS, or simply switcher) is an electronic power supply that incorporates a switching regulator in order to be highly efficient in the conversion of electrical power.
RAR stands for Roshal ARchive. It is a non-documented archive file format that supports data compression, error recovery, and file spanning. It was developed by a Russian software engineer, Eugene Roshal (the first letter of his surname contributing to the name of the archive format), and is currently licensed by win.rar GmbH.
For Internet users, who are using MTNL ADSL routers, they need to restart router after some. To do the same, we need to login to the router via telnet and have to run reboot command or have to manually unplug the power cable. To make the task simple, we can use this simple script which will reboot the router by just running the script.
ISO Master is an open-source, easy to use, graphical CD image editor for Linux and BSD. Basically you can use this program to extract files from an ISO, add files to an ISO, and create bootable ISOs – all in a graphical user interface. ISO Master can open ISO, NRG, and some MDF files but…
MySQL is a simple SQL shell (with GNU read line capabilities). It supports interactive and non interactive use. When used interactively, query results are presented in an ASCII-table format. When used non interactively (for example, as a filter), the result is presented in tab-separated format. The output format can be changed using command options.
After Installation of MySQL on Linux System, start it by,
Fail2Ban scans log files like /var/log/pwdfail and bans IP that makes too many password failures. It updates firewall rules to reject the IP address. These rules can be defined by the user. Fail2Ban can read multiple log files such as sshd or Apache web server ones. Many times system administrator have to face brute force…
RPM is a powerful Package Manager, which can be used to build, install, query, verify, update, and erase individual software packages. A package consists of an archive of files and meta-data used to install and erase the archive files. The meta-data includes helper scripts, file attributes, and descriptive information about the package.
Virtual Users means, there is no need to create system users or physical user accounts, users can be maintained using htpasswd. Using virtual users, they can get access to same ftp files via Apache. Download and Install pam-pam_pwdfile from here. # wget ftp://ftp.pbone.net/mirror/ftp.pld-linux.org/dists/2.0/PLD/i386/PLD/RPMS/pam-pam_pwdfile-0.99-2.i386.rpm # rpm -ivh pam-pam_pwdfile-0.99-2.i386.rpm Now, append following lines to /etc/pam.d/vsftpd.pwd. # vim…