Posts in category sysadmin

02 May 2026

VoIP Toolbox: Is the SIP in this PCAP OK?

SIP Dev Voiptoolbox SysAdmin

VoIP Toolbox can already pull SIP call flows out of a PCAP, directly in the browser. The latest update runs sipright over every SIP message. This gives a high level good/warning/bad call indicator, aiming to make problematic parts of a capture stand out at a quick glance.

22 Feb 2026

10 Years of Blogging

Dev SysAdmin Retrospective

Whilst writing the 2025 retrospective, I realised that the falkus.co blog has been going for 10 years! Time for a whole blog retrospective!

16 Jan 2026

2025 Mini Retrospective

Reviews Dev DIY SysAdmin Retrospective

I've been writing an annual retrospective since 2020. The format has changed a little over the years, but overall it's a look back at my own tech changes and projects throughout the year, particularly those not covered already by another post on this blog.

05 Dec 2025

VoIP Toolbox - Monitoring SIP Endpoints

SIP Dev SysAdmin Voiptoolbox

VoIP Toolbox now offers SIP monitoring, from basic SIP OPTIONS health checks to more advanced scenarios like registration or calling.

25 Aug 2025

voiptoolbox.net SIP PCAP Viewer

SIP Dev SysAdmin Voiptoolbox

VoIP Toolbox now supports viewing SIP calls from a PCAP file direct in the browser.

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