List, Research and Install Only Security Updates on Red Hat 9

 Linux, Security  Comments Off on List, Research and Install Only Security Updates on Red Hat 9
Sep 042022
 
List, Research and Install Only Security Updates on Red Hat 9

One of the nice features of Red Hat Enterprise Linux 9 (RHEL 9) OS is the ability to check, research and install only security updates from the command line. As a systems administrator, there’s always a risk that installing an update might break something important in the enterprise and lead Read More

14 Methods to Verify If You’re Running Red Hat 9 OS

 Command Line, Linux  Comments Off on 14 Methods to Verify If You’re Running Red Hat 9 OS
Sep 032022
 
14 Methods to Verify If You're Running Red Hat 9 OS

Red Hat Enterprise Linux 9 (RHEL 9) is the latest iteration of the solid Linux OS that powers thousands of Linux servers and workstations at a gazillion companies and organizations worldwide. So how to quickly verify if the version of Red Hat Enterprise Linux OS you’re running is the latest Read More

Uncomplicated Firewall Stays True to its Name

 Command Line, Linux, Security  Comments Off on Uncomplicated Firewall Stays True to its Name
Sep 032022
 
Uncomplicated Firewall Stays True to its Name

Having a Ubuntu or Linux Mint desktop without the UFW (short for Uncomplicated Firewall) is like buying a nice home without a front door. UFW, a host-based netfilter firewall, comes standard with Ubuntu and its derivatives like Linux Mint 21. The program comes in both CLI and GUI versions. True Read More

GRE VPN Tunnel Configuration

 Networking, Security  Comments Off on GRE VPN Tunnel Configuration
May 172022
 
GRE VPN Tunnel Configuration

Since Generic Routing Encapsulation (GRE) VPN tunnels continue to remain on Cisco exams like CCNA and CCNP ENCOR, let’s demonstrate a quick configuration of a GRE tunnel. Why do we care about GRE? We care about GRE because it can encapsulate diverse network layer protocols that can be transported over Read More

Find DNS Server in Linux Mint

 Command Line, Linux  Comments Off on Find DNS Server in Linux Mint
Feb 242021
 

If you’re a networking or sys admin student, you might want to know how to identify the DNS server address of your Linux system on the Command Line. DNS refers to the Domain Name System, which resolves domain names into IP addresses. In this case, we’re talking specifically about finding Read More

CCNA 200-301 Practice Exam 1

 Networking  Comments Off on CCNA 200-301 Practice Exam 1
Jul 192020
 
CCNA 200-301 Practice Exam 1

CCNA Test – 75 Questions 1) What is the configuration register that ignores the startup configuration file? A. 0x4142 B. 0x4214 C. 0x2142 D. 0x2123 E. 0x4212 2) Where does RIPv2 send its routing updates? A. 127.0.0.0 B. 224.0.0.10 C. 255.255.255.255 D. 224.0.0.9 E. 255.255.255.254 3) Identify two Link-State protocols: Read More