ENE-NG and GNS3 – Speed and Duplex Mismatch
Duplex Mismatch KB ID 0000983 Problem I don’t know why this happens sometimes with GNS3, and EVE-NG but occasionally I will get a connection between two devices that constantly complains. %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on {interface-name} (not half duplex), with {host-name} {interface-name} (half duplex). For the uninitiated, a speed/duplex mismatch, usually happens when both ends of the link are set...
FortiGate Sub Interfaces (VLAN Trunking)
KB ID 0001772 Problem I was asked by a colleague at work the other day, can we replace the Cisco firewalls with FortiGate firewalls for a client? As a business we are heading towards Forti, but before I said yes I wanted to know what the firewall was actually doing before I said yes. On closer inspection the firewall in question didn’t appear to be doing anything too scary, but I did notice that the LAN interface was...
FortiGate High Availability (Active / Passive)
KB ID 0001730 So my aim was to setup FortiGate High Availability failover in Active / Passive mode. I’m setting this up in EVE-NG and here’s what my lab looks like; Note: Im using TWO connections for Heartbeat/Failover, you can simply use one if you prefer. FortiGate High Availability (Pre-Requisites) Obviously the firewalls need to be the same! For physical firewalls that’s straightforward, but be careful if you are...
EVE-NG: Create Windows Server 2019 VM
KB ID Article Problem I’ve had a Windows 2012R2 server image that I’ve ben using in EVE-NG for ever. This week it bit the dust so I thought, can I deploy a shiny new 2019 server? EVE-NG Windows Virtual Machines Yes! In fact the deployment procedure is the same for 2019 as it was for earlier versions of Windows server. First log onto your EVE-NG host and create the folder; mkdir /opt/unetlab/addons/qemu/winserver-2019/...
Fortigate: One to One (Static NAT)
KB ID 0001716 Problem If you have a host that you want to be able to access from the outside of the firewall e.g. a webserver then this is the process you want to carry out. I didn’t find this process particularly intuitive and it highlighted why I don’t like GUI management interfaces, (in 6.4 the menu names have changed, this rendering a million blog pages inaccurate!) I’m setting this up in EVE-NG on the work bench...
EVE-NG Deploying Fortigate v6 Firewalls
KB ID 0001714 Problem The firm I work for are looking at a replacement for Cisco ASA as their preferred firewall of choice. We are looking at Fortinet to fill this gap, but as a product/solution it’s something I know very little about. So the best way to learn is to deploy and play with, and the test bench weapon of choice for discerning technical types is EVE-NG. So can I deploy the newest (v6.4.2 at time of writing) Fortigate...
Fortigate Blank Web Page?
KB ID 0001713 Problem I’ve been trying to deploy a Fortigate into EVE-NG (article to follow) this week. I could get the appliance running fine but when I tried to access the web management console all I got was the following. Note: I have a couple of management VMs in EVE-G (Windows 7 and Server 2012), they had a mixture of IE, Chrome and Firefox on them but still I could not get in? Solution All forums yielded no more info...
EVE-NG Deploying F5 BIG-IP
KB ID 0001696 Problem I already had some F5 Images in my EVE-NG, but I wanted to run version 16.x. However, I didn’t think that was officially supported, so I thought I would try and get it running anyway! Solution Theres no need to scour the internet for ‘dodgy’ versions, F5 will quite happily give you the latest version, just sign up for a free account, and you can download the image. While you are there, you can...
TinyCore Linux: Build a ‘Persistent’ Web Server
KB ID 0001697 Problem Recently I was building a lab for testing load balancing, and needed some web servers, I could have built three Windows servers, but I wanted to run them in EVE-NG, so they had to be as light as I could make them. I chose TinyCore Linux, (I know there are smaller options, but it’s light enough for me to run, and work with). The problem occurs when you reboot the TinyCore host, it (by default) reverts back...
EVE-NG: Committing / Saving Qemu Virtual Machine Settings
KB ID 0001695 Problem I’ve been working on a load balancing lab in EVE-NG this last week or so. I created some web servers (in TinyCore Linux,) to act as the web servers in that lab. (Essentially they serve a different colour web page so I can test the load balancing is working OK). Now I wanted to save the changes I made so that I could redeploy the configured servers to multiple labs. But when you deploy a qemu VM as a node in...