Linux Deleting Firewall Rules

in Categories last updated June 28, 2012

I would like to to delete my iptables based firewall rules under Linux. How do I delete rules individually or all at once under CentOS or Fedora Linux or RHEL based servers?

CentOS / RedHat: Set Password Quality Requirements

in Categories , , , , , , last updated October 1, 2009

I‘ve created a unique default group for each user and also used Linux groups to enhance security. Further a group called “users” allowed to login via ssh. However, I need to enforce password quality-control for all users. How do I create a password policy and enforce its use under CentOS or RHEL 5.x server operating systems?

Redhat Linux yum grouplist and groupinstall Option Not Working

in Categories , , , , last updated March 5, 2009

I‘m trying to install all the default packages by group using ‘yum groupinstall groupname‘ command under RHEL v5.x. But, grouplist, groupinstall, and groupdelete options are not working with yum. How do I fix this issue and make sure yum command works with software groups under Redhat Enterprise Linux to increase my productivity?