How To
Cisco IOS CLI Editing Commands and Navigation Shortcuts
Most of the time you spend on a Cisco router or switch is spent typing in the IOS…
Category
Networking
How To
Configure SSH on Cisco Routers and Switches
Telnet sends your username and enable password across the wire in cleartext. SSH does not, and on a…
How To
Cisco Device Base Configuration: Hostname, SSH, and Secure Access
A factory-fresh Cisco router or switch trusts whoever reaches the console, answers to the generic name Router or…
How To
CCNA 200-301 Study Guide and Roadmap
The CCNA 200-301 is a single exam that certifies you can install, configure, and troubleshoot a small enterprise…
FreeRADIUS
Build FreeRADIUS From Source on RHEL, Ubuntu, and Debian
The FreeRADIUS package in your distribution repository is almost always behind upstream. Ubuntu ships a 3.0.x or 3.2.x…
Fedora
How To Install GNS3 on Fedora 44/43/42
GNS3 is an open source network emulator used by hundreds of thousands of network engineers to design, configure,…
Containers
Install UniFi OS Server on Ubuntu 24.04 LTS
Ubiquiti shipped UniFi OS Server in 2024 as a way to self-host the UniFi stack on your own…
Linux Tutorials
Setup HAProxy and Keepalived HA Cluster on Rocky Linux 10
A single HAProxy box in front of your web servers solves load balancing, but the box itself is…
Linux Tutorials
Configure BIND9 DNS Master and Slave on Rocky Linux 10
Two name servers, one zone, and a TSIG key to glue them together. That is the smallest authoritative…
Linux
Install Tailscale Mesh VPN on Ubuntu 26.04 LTS
Two laptops, three home-lab servers, and a VPS in Frankfurt. Old me wired that together with WireGuard, an…
Linux
Install Squid Proxy on Ubuntu 26.04 LTS
Stand up a forward proxy on your LAN and you get a single chokepoint for outbound HTTP and…
Linux
Configure Static IP on Ubuntu 26.04 LTS with Netplan
A static IP on a Linux server should take five minutes to set. On Ubuntu 26.04 LTS, Netplan…