Netmiko How to use TextFSM with Netmiko In this blog post, we will go through the steps required to get structured output from network devices using TextFSM, Suresh Vinasiththamby Dec 8, 2022 5 min read
Palo Alto Palo Alto Create Bulk Address Objects using REST API + Python If you are working with firewalls on a daily basis, at some point you are going to come across having Suresh Vinasiththamby Dec 3, 2022 4 min read
Palo Alto Palo Alto REST API - POST Request Example In the previous two posts, we covered PanOS REST API fundamentals and GET requests. In this post, we will look Suresh Vinasiththamby Dec 3, 2022 4 min read
Cisco Cisco 9500 StackWise Virtual Configuration Overview Cisco StackWise Virtual allows two physical switches to operate as a single logical virtual switch. When using StackWise Virtual, Suresh Vinasiththamby Nov 13, 2022 6 min read
Ansible Palo Alto Ansible Example - Interfaces and Zones In the previous post, we covered Ansible + Palo Alto fundamentals, in this post, let's go over the example Suresh Vinasiththamby Nov 12, 2022 7 min read
Firewall Site-to-Site VPN between Palo Alto and Cisco ASA What if I tell you that configuring a site-to-site VPN between Palo Alto and ASA is easier than you may Suresh Vinasiththamby Nov 12, 2022 7 min read
Cisco Cisco ASA Route-Based (VTI) VPN Example If I remember correctly, Cisco introduced Virtual Tunnel Based (VTI) VPN back in 2017 with a 9.7.1 code Suresh Vinasiththamby Nov 12, 2022 6 min read
Ansible Ansible - Making Variables Optional By default, Ansible requires values for all variables in a templated expression. If a variable is not defined, it throws Suresh Vinasiththamby Oct 26, 2022 1 min read
Cisco Cisco ASA Active/Passive Failover Configuration Example Overview High Availability is one of the most crucial requirements for a smooth network operation. In terms of routers or Suresh Vinasiththamby Oct 24, 2022 10 min read
Python Network Device Templating using Jinja and Python Recently, I came across a task of generating configurations for a handful of Cisco switches. The most important thing of Suresh Vinasiththamby Oct 15, 2022 7 min read
Palo Alto Panorama Device Groups and Templates (with examples) Overview People who follow my blog may probably know that I'm a big fan of Cisco ASA firewalls Suresh Vinasiththamby Sep 20, 2022 8 min read
Cisco Cisco 3850 Switch Stack Upgrade In this blog post we will look at how to upgrade Cisco Catalyst 3850 Series Stack Switches using Install mode. Suresh Vinasiththamby Sep 14, 2022 3 min read
Python Python - Read and Write CSV Files (with examples) Once you start working with Python, sooner or later you will come across having to work with CSV files. In Suresh Vinasiththamby Sep 7, 2022 5 min read
ISE Everything you need to know about NAC, 802.1X and MAB In a simpler form, Network Access Control ensures that only users and devices that are authenticated and authorized can enter Suresh Vinasiththamby Aug 29, 2022 7 min read
Palo Alto Palo Alto DNS Proxy (with Examples) Overview You can configure the Palo Alto Firewall to act as a DNS server. All the clients' DNS will Suresh Vinasiththamby Aug 23, 2022 4 min read
Palo Alto Palo Alto REST API with Python In the previous post, we covered PanOS REST API fundamentals. In this post, we will go through the example and Suresh Vinasiththamby Aug 18, 2022 5 min read
Palo Alto Getting started with Palo Alto REST API PanOS REST API is an incredibly powerful tool to manage both Palo Alto Firewalls and Panorama through various API platforms Suresh Vinasiththamby Aug 15, 2022 6 min read
Cisco Cisco IOS-XE RSPAN Configuration Example RSPAN copies all the traffic that comes in and out of source ports or source VLANs to a destination port Suresh Vinasiththamby Jun 23, 2022 2 min read