Blog Archives

Cisco ASA daily backup with Embedded Event Manager

Did you know that you can use the EEM Embedded Event Manager in Cisco ASA (from v9.1) to schedule a daily backup of the firewall running-config to an external server? In this example I backup the configuration once daily to

Posted in Uncategorized

How to set static ip in Linuxes like Kali

sudo pico /etc/network/interfaces Add the following, modify as needed allow-hotplug eth0 iface eth0 inet static address netmask gateway network service networking restart

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DDoS attacks – an explanation of amplified reflective UDP-based attacks

One of the most common types of DDoS attacks is the UDP-based amplified reflection attack. I will now explain how this attack works and what makes it so hard to protect against it. The most targeted systems is web servers.

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Posted in General Security, Security

How to setup ssh keypair authentication in Cisco ASA

I created a short video on how to configure Cisco ASA to allow a CLI user to authenticate with RSA keypair when connecting with SSH instead of username/password. See video below. In short, this is how to do it: username

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Posted in Cisco Security, Security


I am currently attending Cisco Live in Berlin. The schedule is stuffed with various nice topics! One of the sessions I just attended was about OpenDNS. I have heard about it and read about it but no more. Since the

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