LibreNMS new install and all devices were in warn
I recently installed LibreNMS for monitoring some LTE clients. These clients reboot every morning at 3am. This is important to know. When I added them, they all showed up in a warning state. Some google searches said this was due …
/127s for IPv6 Point -To-Point links
/127’s for point-to-point links (RFC 6164) instead of /64’s https://datatracker.ietf.org/doc/html/rfc6164 [RFC4291] specifies that interface IDs for all unicast addresses, except those that start with the binary value 000, are required to be 64 bits long and to be constructed in …
Two-Factor authentication trends for modern security
In the ever-evolving landscape of cybersecurity, authentication is one of the most fundamental aspects of protecting digital identities. While traditional password-based authentication has been the norm for decades, it’s increasingly proving insufficient against sophisticated cyber threats. This is where Two-Factor …
Republish: Tales from the Data Center
Originally Published in 2015So, I have a very heartwarming story today related to the WISP industry. So this started back in March. A client was having issues with a circuit. The transport provider had so many failures in troubleshooting the …
Republish: Journey into Ham Radio and DMR
I originally published this article in 2015. For years I have hung out with “Hams” and been interested in the technology. Guys like ka8jil, w9sn, w9smj, w9cjo, and w9abh have all interested me in ham radio. I remember many years …
Getting the most out of your tower climbs
I have wanted to write this article for a while. When the topic is fresh in my mind, I am usually too tired from a day of climbing. By the time things get around, the lessons learned have escaped me. …
Designing a modular network
Several of you have heard me discuss modular network design, which has five distinct advantages. 1. ScalableYou can upgrade pieces more easily than all-in-one devices. Upgrading a certain module for that big new client might mean the difference between being …
Some random IpV6 tools
http://www.subnetonline.com/pages/ipv6-network-tools/online-ipv6-ping.phpIPV6 Ping tool http://www.subnetonline.com/pages/subnet-calculators/ipv6-subnet-calculator.phpIPV6 Subnet Calculator
What is a Data Center Interconnect
As you become more familiar with Cisco Data Center terminology, you will encounter the term DCI. A DCI is a Data Center Interconnect. DCIs typically fall into three categories. Dark Fiber (CWDM/DWDM)MPLS Layer 2 VPN (VPWS/VPLS)MPLS Layer 3 VPN A …
Mikrotik chains explained
What the wiki says:
The Cloud Under the Sea article
This is a great read (and well-put-together post) about undersea cables and their vital role in the Internet.https://www.theverge.com/c/24070570/internet-cables-undersea-deep-repair-ships