Kamailio World 2024: Coming Soon

Next stop, Berlin! In just 2 weeks, Kamailio World 2024 will be held in-person and in Berlin. This year, there’s location and I’m excited to both attend and speak. If you haven’t gotten tickets, there’s still time to register. My talk is titled HTABLE vs REDIS: Is There A Performance Benefit? and is set for April 18th. Looking forward to seeing many of you (and hopefully meeting more people from the community as well)....

April 4, 2024 1 min Fred Posner

Kamailio World 2024 Announced

Kamailio World remains one of my favorite events of the year. I am very excited that Kamailio World will again be held in-person and in Berlin. I’ve gotten the tickets… I’ve made my reservations at the new venue… and I am ready to see Kamailians from across the globe as we discuss all things Kamailio. If you’ve never been, you can see some past events on the Kamailio World YouTube Channel....

January 17, 2024 1 min Fred Posner

APIBAN Now with HTTP Honeypot Data

You’ve probably heard me say (once or twice)… 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/APIBAN. I started APIBAN back in 2020 and for the past 3 years have greatly enjoyed helping others protect their SIP systems from IP addresses sending unwanted traffic. The service is provided for FREE....

December 21, 2023 1 min Fred Posner

Kamailio World 2023

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....

June 1, 2023 1 min Fred Posner

Kamailio 5.7.0 Released

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....

May 17, 2023 1 min Fred Posner

APIBAN now supports Cisco and Juniper formats

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....

April 14, 2023 1 min Fred Posner

Kamailio Install Module Git

Generally, when I deploy Kamailio, I use git. Many reasons for this (including being able to quickly apply a patch or fix), but that’s a discussion for another time. If you’ve installed from git and need to add a new module (that hasn’t already been built/installed), the process is very straight forward (and simple). Step 1: Install Dependencies Some modules require libraries to be installed. For example, the jansson module wants the jansson library to be installed....

December 16, 2021 1 min Fred Posner

APIBAN Now Has IPset

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/APIBAN. APIBAN started from discussions at tech conferences (in particular Kamailio World and Astricon). Most of the attendees had seen increases in malicious SIP traffic and we all thought there should be a way to share the active “bad actors.” When I found myself with some downtime, and with the support of LOD, some honeypots were deployed… and API made to share the data, and APIBAN was born....

October 21, 2021 2 min Fred Posner

Handling Non-SIP Attacks With Kamailio

Recently, I posted about using Kamailio’s PIKE module to help block excessive SIP traffic. This is a great tool for helping your system handle high traffic SIP, such as floods. But, what can you do when someone sends garbage or non-SIP traffic to your system? Kamailio’s SIP parser is handled in the core and was recently upgraded in v5.5 with logging improvements, as well as simplified implementation, static map for header name, and type for parsing....

October 1, 2021 3 min Fred Posner

Handling SIP Flood Attacks Using Kamailio

The Pike module in Kamailio provides detection and alerting of “excessive” SIP traffic to your system. Within the module you can configure the rate limit, time period, and amount of time that the IP (ipv4 or ipv6) should be blocked. For example, you can configure your system to say that 30 requests from the same IP within 5 seconds should trigger a block of that IP for 5 minutes. I absolutely love this module and, in my case, Pike more often finds abusive traffic (like dialers) than SIP floods attacks....

September 26, 2021 3 min Fred Posner