Security

I am presenting a video showing how Duo can be used as second factor authentication (push app notification in this case) for VPN remote access connections.

In this blog post, I am sharing a video showing how to use Multi-Factor Authentication for RDP (Remote Desktop) sessions. We’ll use Cisco Duo Security as the second factor (push app) authentication method. This recording was prepared for one of our Grandmetric Tech Meetings. Lab schema:   RDP and second factor authentication live demo   […]

In following post I will discuss the concept of Identity based networking and its components based on Cisco Systems products. Then I will show the steps how to build functional network where pxGrid is one of the core protocols used.

On 8th of October 2019 we hosted first event from the new series: Tech Meeting Series. The conference cycle is intended for IT departments, engineers and IT managers who want to follow latest technology trends, want to talk about the technology with others, share experience and look for solutions best suitable for their organizations.

We are very proud to announce that Grandmetric successfuly delivered the first Software-Defined production network in quarter 1 2019 for Pfeifer & Langen Polska S.A. The implementation was part of network and IT operations optimization project for one of the largest sugar manufacturer in this part of Europe.

Introduction to Wi-Fi Security Distributing data using wireless medium means that anyone can capture the signal. There is no boundary, like in case of cable communication, which prevents unwanted access. This means we must take other security measures. In this blogpost we will review current algorithms providing Wi-Fi security and we will take a sneak […]

Recently i was asked to advise in the following scenario: VPN tunnel between AWS VPC and Cisco IOS routers on DC prem. Nothing sophisticated but: Two ISR 4k, HSRP VPN redundancy, legacy crypto maps in production (several working vpns) and Static VTI (AWS). Two Crypto structures sourced from one HSRP. I have put the results on blog.

In this post we are going to focus on the scripts included in FTD and FMC operating systems that help to troubleshoot connections between FTD sensors and Cisco Firepower Management Center. As they are run from the “expert mode” (super user), it is better that you have a deep understanding of any potential impact on […]

This post should help you to understand the Firepower sensor registration in Firepower Management Center process and uncover the communication specifics between firepower components. I will also give you some additional hints what to check to verify the registration. In order to make troubleshooting easier there will be dedicated troubleshooting post later on. 1. High […]

Cisco has stated that there is a vulnerability in Cisco IOS XE 16.X version (bug does not affect releases prior IOS XE 16.X)  that allows remote attacker to log in to the system with privilege 15 with default username cisco. This bug affects the platforms supported by IOS XE software, inter alia following:   Catalyst […]