Justin’s List of xISP vendors and resources
I have been working on this list for a while. The following are vendors, manufacturers, and various companies I have dealt with in my career as an ISP owner and consultant. This is not a complete list by any means. …
Denial of Service and the xISP Part 1
Most service providers have been the victim of a Denial of Service (DoS) attack at one point or another. Sometimes you may not realize you are under an attack. A few months ago, I posted a simple screenshot at https://blog.j2sw.com/networking/anatomy-of-a-ddos/ of what …
Quick and Dirty Baicells eNODEB Mikrotik Rules
If you have a Baicells eNodeB you wish to restrict access to these Mikrotik rules will help. There are some assumptions made. The following rules are meant to be a base for incorporating into your network. /ip firewall filteradd action=drop …
Using Splunk to monitor literally everything on Mikrotik
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Proper BGP DENY-ALL filter for mikrotik
This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.To view this …
Speed validation for compliance on ISP networks
Does your ISP network need a way to validate customer speeds? RDOF compliance? State compliance for broadband speeds and latency? as many of you know there are problems with using public speedtest servers to validate customer speeds. J2networks, in conjunction …
Netbox Mikrotik Ansible Config generator
So, due to Covid, weather and everything else I am quite behind on blog updates and such. this is one that kinda fell through the cracks. I meant to get this out much sooner than now. My buddy Schylar Utley …
Mikrotik Connection tracking and CPU usage
This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.To view this …
Mikrotik RouterOS and CPU usage
There always is a lot of talk about Mikrotik RouterOS CPU usage. I wanted to take a few minutes and go over a real-world example and explain some of the ins and outs when discussing Mikrotik CPU usage. Let’s talk …
Mounting old file system CDs on MacOS Catalina
Recently I had an issue with mounting older CD-Roms of backup files and such on MacOSX Catalina. Apparently, Apple dropped support for HFS volumes. In order to fix this it is pretty easy. You will need HomeBrew. Being a network …
Blast from the past
I remember using this when designing web-pages years ago. It was all the rage to put browser buttons like this at the bottom.
Preseem now supports IPv6
https://docs.preseem.com/changes Features IPv6 Preseem now supports IPv6 for all use cases. This includes the ability to assign subscribers a prefix of arbitrary length. IPv4 with Prefixes of Arbitrary Length Previously Preseem modelled subnet assignments to customers as a number of …