Author Archive

Virtual voice/VoIP PBX based on Mikrotik’s metaROUTER functionality (Asterisk + voice recognition)

For some time I’ve been looking for solution which would help allow me to run VoIP (Asterisk PBX) call-center services for business customers painlessly and in a not expensive way. Solutions like Slican ITS-0286, Platan Prima Mini and others are fine and functional but in general – they are too expensive for simple PBX scenarios

GPON Dasan H660GM – leaking vlan in version 1.16-0003

Soon after releasing Dasan H660GM ONUs to our customers we got notified by script that a rogue DHCP exists in IPTV vlan. At a first glance I thought that one of our clients propably made a physical loop with an ethernet cable – from IPTV port to IT port. Such situation should be detected instantly

MikroTik mAP Lite – smallest credential harvester – RESULTS

This article relates to an article regarding using MikroTik as a “credential harvester” MikroTik mAP Lite – phishing – smallest credential harvester. I have finally managed to collect all data about one of my previous projects. Despite a small amount of a free time and little financial contribution I am stunned how many people swallowed

AmpliFi – when design overwhelms functionality

I am not a fan of typical ‘review’ which you can find thousands all around the Internet, because mostly they do not focus on functionalities of a equipment but on design, accessories and other issues which are less important regarding telecommunication devices, am I right? This router came along to me almost accidentally, but I

Nokia N900 – pentester’s multitool in your pocket

I was very patient and waited for this device for some time. Despite of time flowing without mercy – Nokia N900 still does the job. It’s potential is amazing, believe me. N900 is run by Maemo 5 OS which is based on Debian Linux distro. Wide variety of packages dedicated for N900 or ARM architecture

MikroTik mAP Lite – phishing – smallest credential harvester

This article was made to increase awareness of Internet security. This information is for educational purposes only! Lately MikroTik released a brand new, small-form AP. We are talking of course about mAP Lite (RBmAPL-2nD). This is really interesting product due to its small dimensions (48x49x11), low power consumption and great features for the price. It

FRITZ!Box 7490 – external antennas

In previous article I shared my experience about FRITZ!Box 7490 router. I tried to show it’s pros and cons as well as some ideas to exploit its full potential. One of the most annoying flaws of this device is poor wireless coverage. Due to small-sized internal antenna it is almost impossible to get full coverage

FRITZ!Box 7490 – router which needs a little bit of your attention

Router is just a device which lonely takes its place on a shelf under a film of a dust. However some routers perform better, other worse. Let’s take a look at AVM – FRITZ!Box 7490 device. I need to say this – the look of this device hits the spot. And I mean balls. Its

VoIP Gateways – issues of modern telephony

Cisco / Linksys series – PAP2T, SPA2102, PAP112, SPA122 are propably most widely used around the world for VoIP communication. Most common issues related to VoIP Gateways are unreachable phone in incoming calls, DTMF not passing through or not working properly with alarm/elevator systems. Problem 1: VoIP gateway not reachable on incoming call. Mostly this

DNS Amplification – detection script

Lately DDoS amplification method of attack became very popular due to simplicity of its deployment and potentially great attack power. If you own your DNS server for your clients good idea is to make it available only for them (acl trusted). This script allows you to detect and quickly inform you about any DNS attack