Categories
5G SA EPC LTE Mobile Networks

MTU in LTE & 5G Transmission Networks – Part 1

A look at MTU and its role in LTE and 5G Transmission.

Categories
Mobile Networks Security SIM Cards

SIM Card Sniffing with Wireshark

Using Wireshark to sniff communication between your computer and Smart Card / SIM Card

Categories
Linux

Control + R in Bash = Life Changed

Searching your Bash history the easy way.

Categories
Mobile Networks Python SIM Cards

SIM / Smart Card Deep Dive – Part 4 – Interacting with Cards IRL

Sending commands/APDUs to a real life Smart Card.

Categories
Australian Telco

NBNco’s FTTN – What’s in the box?

Unwrapping NBNco’s FTTN Cabinets and taking a look at what’s inside.

Categories
Notes Python Software

Adding SNMP to anything with Redis and Python

Bolting an SNMP Server and stats collection onto your existing Python projects.

Categories
Software Voice over IP

VoIP is an only child – ‘Gotchas’ on running VoIP applications inside Containers

It’s 2021, and everyone loves Containers; Docker & Kubernetes are changing how software is developed, deployed and scaled. And yet so much of the Telco world still uses bare metal servers and dedicated hardware for processing. So why not use Containers or VMs more for VoIP applications? Disclaimer – When I’m talking VoIP about VoIP […]

Categories
Mobile Networks Python RFCs & Standards Software

Dr StrangeEncoding or: How I learned to stop worrying and love ASN.1

Australia is a strange country; As a kid I was scared of dogs, and in response, our family got a dog. This year started off with adventures working with ASN.1 encoded data, and after a week of banging my head against the table, I was scared of ASN.1 encoding. But now I love dogs, and […]

Categories
Software

MSSQL in Docker

Well that was easy…

Categories
Mobile Networks RFCs & Standards

SCTP Multihoming

A look at SCTP multi-homing in practice.

Categories
EPC Mobile Networks RFCs & Standards Software

Getting the GTP-U Packets flowing Fast – DPDK & SR-IOV

How SR-IOV and DPDK play into faster performance of Virtual Network Functions (VNFs) for 3GPP core networks.

Categories
5G SA GSM LTE Mobile Networks RFCs & Standards Security SIM Cards

Confidentiality Algorithms in 3GPP Networks: MILENAGE, XOR & Comp128

A look at the Confidentiality Algorithms used in 3GPP Networks, MILENAGE, XOR & Comp128

Categories
Asterisk Kamailio Voice over IP

Using Docker to develop SIP solutions with Kamailio

Using Docker to spin up environments to test Kamailio in

Categories
Kamailio Voice over IP

Kamailio Bytes – OnReply Route

So far with most of our discussions about Kamailio we’ve talked about routing the initial SIP request (INVITE, REGISTER, SUBSCRIBE, etc), but SIP is not a one-message protocol, there’s a whole series of SIP messages that go into a SIP Dialog. Sure the call may start with an INVITE, but there’s the 180 RINGING, the […]

Categories
Australian Telco

Telecom Pillars – Resistance to Rifle Fire?

A research paper from the 1960s examining how Telecommunications pillars hold up to gunfire…

Categories
EUTRAN Mobile Networks

Enable GPS/GLONASS Sync on Huawei BTS3900

Our BTS is going to need an accurate clock source in order to run, so without access to crazy accurate Timing over Packet systems or TDM links to use as reference sources, I’ve opted to use the GPS/GLONASS receiver built into the LMPT card. Add new GPS with ID 0 on LMPT in slot 7 […]

Categories
GSM LTE Mobile Networks Security SIM Cards

SIM / Smart Card Deep Dive – Part 3 – APDUs and Hello Card

A look at APDUs and Interacting with Cards

Categories
GSM LTE Mobile Networks Security SIM Cards

SIM / Smart Card Deep Dive – Part 2 – Meet & Greet

The basics of Smart Cards & their File System

Categories
GSM LTE Mobile Networks Security SIM Cards

SIM / Smart Card Deep Dive – Part 1 – Introduction to Smart Cards

Getting up close and personal with Smart Card / SIM Cards

Categories
Australian Telco Voice over IP

I like big Butts and I cannot lie.

The buttinski test phones I know and love.