Fred PosnerFeb 26

Time for me to say... "There are those who read what @sandrogauci and @enablesecurity write and those who wish they had."

Also, very honored to have #APIBAN make the newsletter -- in a good way. ;)

#security #rtc #sip

https://www.enablesecurity.com/newsletter/2026-02-rtcsec-news/

February 2026: TURN security series, libvpx VP9 overflow, Grandstream RCE, coturn fixes

RTCSec newsletter for February 2026 covering Enable Security's TURN server security blog series, libvpx VP9 encoder heap overflow in Chrome and Firefox, Grandstream GXP1600 unauthenticated RCE with call interception, coturn 4.9.0 IPv4-mapped IPv6 ACL bypass, AISLE Research finding Firefox WebRTC and OpenSIPS vulnerabilities, APIBAN 2025 year in review, and more

Enable Security
Fred PosnerAug 30, 2024
Wrote an at-most 2 min read about #APIBAN https://www.fredposner.com/apiban-summer-2024/
APIBAN Summer 2024 Stats

How is the summer going for our honeypots? APIBAN helps prevent unwanted SIP traffic by identifying addresses of known bad actors before they attack your system.

Fred PosnerJun 13, 2024

CommCon SF will be starting shortly. Here's the livestream link:

https://Commcon.live

#commcon #apiban

Fred PosnerJun 13, 2024

Great Day 1 here at @commcon San Francisco hacking away (with some @cloudflare API's), meeting with friends, and meeting new people.

Looking forward to talking about #APIBAN tomorrow.

Fred PosnerApr 12, 2024

Big thanks to Lorne Gaetz for his help testing apiban-fail2ban on FreePBX 16/17. His feedback has allowed for script improvements and better documentation.

#apiban #freepbx #OpenSource

https://github.com/apiban/apiban-fail2ban

GitHub - apiban/apiban-fail2ban: apiban client to send ip's to a fail2ban jail

apiban client to send ip's to a fail2ban jail. Contribute to apiban/apiban-fail2ban development by creating an account on GitHub.

GitHub
Fred PosnerApr 12, 2024

Added a new simple, lazy install script for the apiban-fail2ban client. The script is geared towards freepbx using "asterisk-iptables" as the jail.

https://github.com/apiban/apiban-fail2ban

#freepbx #apiban #voip

GitHub - apiban/apiban-fail2ban: apiban client to send ip's to a fail2ban jail

apiban client to send ip's to a fail2ban jail. Contribute to apiban/apiban-fail2ban development by creating an account on GitHub.

GitHub
Fred PosnerApr 11, 2024

Running #freepbx or a web facing system with #fail2ban ?

There’s an apiban client for that ;)

https://github.com/apiban/apiban-fail2ban

#apiban #voip #security

GitHub - apiban/apiban-fail2ban: apiban client to send ip's to a fail2ban jail

apiban client to send ip's to a fail2ban jail. Contribute to apiban/apiban-fail2ban development by creating an account on GitHub.

GitHub
Show threadFred PosnerMar 5, 2024
@north @fredposner I’ve done it a couple times re #kamailio and #apiban - it’s a friendly one to one that’s then broadcast a week or two later.
Fred PosnerDec 28, 2023

How batshit crazy is Palo Alto spamming of #SIP servers?

The 198.235.24.0/24 currently has **102** active IP addresses sending unwanted SIP traffic.

Horrible.

#APIBAN

Fred PosnerDec 20, 2023

APIBAN, now with HTTP data as well =)

https://apiban.org/new-honeypot-data.html

#apiban #sip

APIBAN - 2025 year in review

Happy New Year! Lets start 2026 off by looking at tha last year from an APIBAN point of view. The 2025 year in review.