Tag: cisco

[Hacking Series/Lab 4] –How to launch MAN IN THE MIDDLE Attack? (ARP poisoning)

Disclaimer: These methods and techniques are purely for educational and informational purposes. All attacks were carried out in an offline isolated virtual environment. The use of these techniques in normal life is illegal and the responsibility lies strictly with the reader. DO NOT USE THESE TECHNIQUES IN REAL LIFE ! ARP poisoning and Man-in-the-Middle (MITM) […]

[Hacking Series/Lab 3] –How to launch CDP (LLDP) Attack to a Cisco switch?

Disclaimer: These methods and techniques are purely for educational and informational purposes. All attacks were carried out in an offline isolated virtual environment. The use of these techniques in normal life is illegal and the responsibility lies strictly with the reader. DO NOT USE THESE TECHNIQUES IN REAL LIFE ! CDP Attack (Cisco Discovery Protocol) […]

[Hacking Series/Lab 1] – VLAN Hopping Attack ! This training was created for preventive defensive purposes.

Disclaimer: These methods and techniques are purely for educational and informational purposes. All attacks were carried out in an offline isolated virtual environment. The use of these techniques in normal life is illegal and the responsibility lies strictly with the reader. DO NOT USE THESE TECHNIQUES IN REAL LIFE ! In this training, I will […]

OT/IT Security – Internal Firewall Fortigate Implementation with configurations for your critical networks

An internal firewall, also known as an internal network firewall or a segment firewall, is a security system designed to protect and control traffic between different segments within an organization’s internal network. Unlike a perimeter firewall, which protects the network from external threats, an internal firewall focuses on securing the internal network by regulating the […]

GRE Tunnels between multiple sites

A GRE (Generic Routing Encapsulation) tunnel in Cisco is a method of encapsulating and tunneling network traffic over an IP network. It allows the creation of a virtual point-to-point link between two endpoints, typically routers or switches, across an existing network infrastructure. Here’s how it works: GRE tunnels are often used for various purposes, such […]

Ethernet MAC Port-security

Today we will implement port security on our Cisco switch. We will bind the MAC address of the NIC device with our related port. So if some changes happen on the physical ports, then new device will be restricted. CISCO SWITCH MAIN CONFIGURATION Switch>enable Switch#configure terminal Enter configuration commands, one per line. End with CNTL/Z. […]

Cisco IOS and running-config backup to TFTP server

Backing up the Cisco IOS and running-config is extremely important for several reasons: To summarize, backing up the Cisco IOS and running-config is critical for ensuring network availability, performance, and security. It is a best practice that all network administrators should follow to avoid potential issues and minimize downtime. First create your TFTP server on […]

How to setup Fortigate firewall with Cisco core switches configured with VLANs?

Configuring a Fortigate Firewall is an important step for any network administrator. It not only ensures that the firewall is set up correctly, but also helps keep the network secure from any potential threats. In this article, we will discuss how to configure a Fortigate Firewall using CLI, from its first setup to more advanced […]

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