Category Archives: Computers

RHCE Use firewalld

Posted on August 10, 2015 by Freejack

RHCE Objective: Use firewalld and associated mechanisms such as rich rules, zones, and custom rules, to implement packet filtering and configure network address translation (NAT). http://www.certdepot.net/rhel7-get-started-firewalld/ This is clearly necessary to pass the exam so we’ll just have to dig … Continue reading →

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RHCE Route IP Traffic

Posted on August 10, 2015 by Freejack

RHCE Objective: Route IP traffic and create static routes In most cases, you’ll use routing when you have a multi-homed system. A server with an interface on one network and one or more interfaces on a different network. You’d do … Continue reading →

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RHCE Configure IPv6

Posted on August 10, 2015 by Freejack

RHCE Objectives: Configure IPv6 addresses and perform basic IPv6 troubleshooting. Configuring IPv6 on Red Hat 7 is very similar to configuration on Red Hat 6. Files are located in: /etc/sysconfig/network and /etc/sysconfig/network-scripts/ifcfg-interface The definition for IPv6 specific settings are located … Continue reading →

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RHCE Network Teaming/Bonding

Posted on August 10, 2015 by Freejack

RHCE Objective: Use network teaming or bonding to configure aggregated network links between two Red Hat Enterprise Linux systems. http://rhelblog.redhat.com/2014/06/23/team-driver/ https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Networking_Guide/ch-Configure_Network_Teaming.html Teaming and Bonding are the same as far as technical discussions at this level are concerned. Bonding is kernel … Continue reading →

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Documentation And Side Projects

Posted on June 7, 2015 by Freejack

Years ago I started off working in military (Military Policeman, Graphic Artist, and then Typesetter). From a personal perspective, I picked up a Timex/Sinclair Z80 computer. It needed a cassette player to save data to cassette and plug into a … Continue reading →

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RHCE Objectives

Posted on May 31, 2015 by Freejack

System configuration and management Use network teaming or bonding to configure aggregated network links between two Red Hat Enterprise Linux systems Configure IPv6 addresses and perform basic IPv6 troubleshooting Route IP traffic and create static routes (Chapter 12) Use firewalld … Continue reading →

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RHCSA Objectives

Posted on May 31, 2015 by Freejack

Here is the list of things you should be able to do to pass the RHCSA Exam (CertDepot Site): Understand and use essential tools Access a shell prompt and issue commands with correct syntax Use input-output redirection (>, >>, |, … Continue reading →

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Red Hat Certifications, Part 5

Posted on May 30, 2015 by Freejack

In the boot process. While I certainly know how things work, the RH7 boot process is a tad different with grub2 and systemd vs grub and init. Startup process on 6 and earlier is pretty simple. After the BIOS or … Continue reading →

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Red Hat Certifications, Part 4

Posted on May 29, 2015 by Freejack

Continuing on Chapter 4 finds firewall configuration and selinux. Firewalls are something I’ve dealt with before over the years. In general they’re pretty simple but you do need to understand what you’re doing in order to properly set up a … Continue reading →

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Red Hat 7 Stuff Again

Posted on May 29, 2015 by Freejack

I decided to check out the new ‘*ctl’ features of RH7 and found a few new things in addition to systemctl and journalctl. bootctl – Manages the boot loader and firmware. ‘status’ tells the status of the boot loader. On … Continue reading →

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