FAQ for the 'RedHat and Friends' Category

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Red Hat / CentOS Linux Install Suhosin PHP 5 Protection Security Patch

Q. Wordpress and many other open source application developers asks users to protect PHP apps using Suhosin patch to get protection from the full exploit. Suhosin is an advanced protection system for PHP installations. It was designed to protect your servers from various attacks. How do I install Suhosin under RHEL / CentOS / Fedora Linux?
ip6tables: IPv6 Firewall For Linux

Q. IPv4 by default protect internal host using RFC 1918 private IP address. But IPv6 offers direct global address which result into exposing all internal hosts as well. How do I create default IPv6 firewall to drop all incoming (except ping6 request) connection and only allow outgoing requests from Linux workstation?
Linux: Force Users To Change Their Passwords Upon First Login

Q. How can I force my Linux users to change their passwords upon the first login under CentOS / Debian Linux?
Explain: Five Nines ( 99.999% ) Computer / Network Uptime Concept

Q. Some service provider guarantees 99.999% uptime for their service. Can you explain meaning of five nines?
Linux / UNIX: Create Username or Groups in UPPER Case

Q. How do I create username or user groups in upper case under Linux / *BSD / UNIX operating systems?
How To: Make Sure /etc/resolv.conf Never Get Updated By DHCP Client

Q. I’m using GNU/Linux with the Internet Systems Consortium DHCP Client. dhclient, provides a means for configuring one or more network interfaces using the Dynamic Host Configuration Protocol. It also updates my /etc/resolv.conf each time my laptop connects to different network. I would like to keep my existing nameservers. How do I skip /etc/resolv.conf update?
Red Hat / CentOS Linux: Enable and Install Media, CD / DVD, Moive MP3 Players

Q. How do I enable and install Media player under CentOS or Fedora or Red Hat Enterprise Linux systems? How do I play mp3s under RHEL / CentOS Linux 5.x? How do I play CD / DVD movies under RHEL / CentOS Linux version 5.x?
TCPDump: Capture and Record Specific Protocols / Port

Q. How do I capture specific protocol or port such as 80 ( http ) using TCPDump tool under Linux / UNIX? How do I recording Traffic with TCPDump and find problems later on?
Find command: Exclude / Ignore Files ( Ignore Hidden .dot Files )

Q. How do I ignore hidden .dot files while searching for files? How do I ignore or exclude certain files while running Linux / UNIX find command?
Linux: Run Quicken Personal Finance Management Software

Q. How do I run Quicken personal finance management software or propitiatory Windows tax software under GNU/Linux?