Fred Posner

Clearly, my goal of writing more in 2023 failed significantly. As many Americans travel to celebrate Thanksgiving, our family once again will celebrate locally here in Gainesville. This year presented many challenges and with challenging years, it becomes harder to focus on giving thanks. Of course, when we do take the time to focus, the difficulties fade. I am incredibly grateful to have a healthy daughter. Although, with starting school, we’ve experienced the stereotypical petri dish of diseases (enough where the pediatrician’s office knows us by sight), our visits are always something that can be resolved quickly....

In just a few weeks, I’ll be headed to ClueCon2023 in Chicago. I generally enjoy going to ClueCon and am happy to say I have lost track of the number I’ve attended. This year, I’ll be giving a talk called Kamailio with FreeSWITCH B2BUA: Sometimes, you just want a B2BUA that’s not touching media. FreeSWITCH does this very well and with Kamailio and RTPengine you have a very scalable, high performant B2BUA SBC....

I love Kamailio World and cannot properly describe how excited I am to return to Berlin for an in person Kamailio World. I am honored to be presenting in this year’s schedule. My talk, Using APIBan In Productions, will be at 1100 on June 06, 2023. It’s been a few years since we last visited Fraunhofer Forum in Berlin to gather for the conference and I’m very excited to see old friends and meet new people....

Kamailio v5.7.0 is out – a new major release, bringing new features and improvements added during almost twelve months of combined development and testing. It’s always exciting when a new, major Kamailio release launches and I’m sure this release will be talked about during Kamailio World (coming up in just 2 weeks!). Some highlights of this new release: 4 brand new modules (including tls_wolfssl) topos option to mask call-id options for loading modules support for long values instead of int for variables new variables and transformations For more information check out https://www....

We recently made some dramatic enhancements to the APIBAN infrastructure. As I joked on Mastodon, I must be getting older as these improvements were made well before an emergency. If you’re not familiar, APIBAN helps prevent unwanted SIP traffic by identifying addresses of known bad actors before they attack your system. Bad actors are collected through globally deployed honeypots and curated by LOD. You can access this data via API or automatically block the traffic with our open source client....

Disclaimer: The views expressed in this post are solely my personal views and opinions. These do not necessarily represent the views and opinions of any company or project that I am (or have been) associated with. Back in 2019 (around 3.5 years from this post), I blogged that Sangoma Doesn’t Get Open Source. The post generated a decent amount of discussion and later that year, Dan Jenkins and I sat with Bill Wignall and made commitments about future conferences, handling “open source,” and stopping FUD....

Another year, another quiet Thanksgiving in Gainesville. Later on this week, we’ll be celebrating my daughter’s 4th birthday. Still coming to terms with how quickly the time passes. Choosing to stay local and not visit family is a choice made for one reason: my daughter loves birthday celebrations at her home. She’s been planning what she wants for months now. When it comes down to it, choosing to make her birthday special is an easy choice....

I’ve learned a few things from Michael White throughout the time we’ve been friends. The most important being to make a mantra of Happy Wife. Happy Life. When I first joined twitter in 2008, it was a fun way to socialize with people from all over the globe. Twitter was gaining popularity within the open source telecom world and many of us would share posts, opinions, photos, whatever. The length of the tweet was perfect for sharing short thoughts and back then, there weren’t a ton of people on the platform....

I love git. Love it. I’ll save my love for Gitea for another day (TL;DR: Gitea is awesome). Anyway, a lot of git repositories allow you to use ssh keys as authentication. This is a great thing, but of course, sometimes can be difficult to manage if lets say one repo for work uses one key and one that you use for a side project uses a different ssh key....

The wonders of troubleshooting SIP never cease. Ever try to open a pcap with sngrep only to get the following error? Couldn't open pcap file XYZ.pcap: unknown file format And then, even though you hate looking at SIP on wireshark, you are left wondering… Why does this file open in Wireshark, but not in sngrep? Well, most of the time, this is because the pcap file is actually compressed. Easy fix....