Category: Networking

Threat Feed in Fortigate (external IP blacklist).

Introduction This post shows how to use external black or white list of IP addresses using a new feature called Threat Feed. Starting with FortiOS 6.2 it’s possible to import external IP address and Domain Name lists for using in Firewall Policies and DNS Filter profiles. FortiOS 6.0 allowed using imported lists in Proxy Polices,

How to run a simple HTTP server?

Introduction HTTP server is often required when you want to serve some files to remote hosts, or update firmware of some device. This post shows how to run a simple HTTP server on any machine (Windows or Linux) which has Chrome Web Browser installed. Before we start This extension is not a replacement for a

GNS3. Basic Installation.

Introduction This post gives an overview of GNS3 software and shows how to install it. It is a part of GNS3 Tutorial series. What is GNS3? GNS3 is a free network emulation software with GUI that can be used to run real network OS (for example, Cisco IOS) images, and build various network topologies in

How to capture traffic on Cisco ISR 4000 ?

Introduction In this article we will see how we can capture and export network traffic on a Cisco ISR 4331. The provided instructions are applicable to any Cisco ISR 4000 series router. The exported traffic has a pcap file format and therefore can be easily opened and analyzed in Wireshark. The ISR 4331 used in

Voice VLAN on HPE OfficeConnect 1920S.

Introduction In this post we will configure voice vlan on HPE OfficeConnect 1920S switch. The switch will be used for connecting Cisco 8851 IP phone, which will detect the Voice VLAN and get an IP address from the correct VLAN. The PC connected through the IP phone will remain in a Data VLAN. The exact

IRF stack configuration (2 x HPE 5130 switches).

Introduction In this article we will setup an IRF stack with two HP 5130 switches that run Comware OS. What is IRF? IRF (Intelligent Resilient Framework) is a proprietary virtualization/stacking technology used in some HPE switches. It has been developed originally by H3C, but later HPE acquired H3C. IRF allows us to interconnect several switches