Packets DownRange
j2sw https://blog.apnic.net/2024/03/14/ipv6-dns-and-truncation-in-udp/ In February I looked at the behaviour of the DNS when processing responses in UDP, which set the truncated flag in the DNS response. In particular, I was looking for the incidence of DNS resolvers that used the answer section in truncated responses (despite the admonition in DNS standards not to do so) and the … Read more
In the realm of networking, BGP (Border Gateway Protocol) is a crucial component that helps determine how data is routed across the internet. One of the many attributes within BGP is MED, or Multi-Exit Discriminator. But what exactly is BGP MED, and why should you care about it? Let’s dive into the details. What Is … Read more
For those of you who know. APKTIDVoE5hoOlKQJFS2OK56ARdI70p1zpf9OyJIsPBnlw8sFG5A
I recently worked on a network where we re-piped around four hundred hosts. These four hundred hosts were being monitored by LibreNMS. The question is how to delete this many hosts. I credit https://www.incredigeek.com/home/librenms-bulk-delete/ for this tutorial. I will only add that I used Excel instead of the MySQL database. I knew the IP range, so I opened … Read more
With the release of Mikrotik Winbox version 4 we now have a Mac native application. This looks the same as the Windows and Linux versions. Way to go, Mikrotik! https://mikrotik.com/download
Picked up something new to get back into the podcasts.
A quick post about the Alta Labs network view front eh iPhone app.
With a 600W AC inverter, 268Wh LiFePO4 battery pack, and 9 outlets, this is perfect for Tower crews on the job site. Many times, these crews are in remote areas, so you don’t want to fire up a generator or even the on-site expresso machine to do some small charging. https://amzn.to/3XOtpSn
If you are like me, you spend a lot of time in data centers. One challenge is keeping your phone charged. I like carrying a battery around so I don’t have to find outlets. https://amzn.to/4cBkhESINIU Portable Charger, Slimmest 10000mAh 5V/3A Power Bank, USB C in&out
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 to the uptime default being 86,400 seconds. Libre has a FAQ that explains this as … Read more
/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 Modified EUI-64 format. In addition, it defines the Subnet-Router anycast address, which is intended to … Read more
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 Authentication (2FA) steps in as a powerful tool to bolster security. Let’s delve into the … Read more