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Networking


Exercise: Set up 10 new VLANs on the pfSense LAN interface

March 15, 2022 Zsolt Agoston
Today's task is to set up ten new VLANs on a virtual pfSense router with separate, routable subnets. DHCP should service each subnets and both virtual achines and physical nodes should be able to use them. Let's see how to ... [Read More]

Packet Capture on Windows Without WireShark – NO INSTALLATION REQUIRED!

December 20, 2021 Zsolt Agoston
Two native ways of capturing network traffic on Windows servers and clients. Works on Windows 7, 8, 10 and Windows Server 2012R2, 2016, 2019, etc ... [Read More]

Load Balancer for Exchange 2019, 2016 and 2013 with HAProxy | FREE

June 30, 2020 Zsolt Agoston
This article guides you through the steps of setting up a proper load balancer for Exchange 2019, 2016 or 2013 client connections on a pfSense firewall, using HAProxy ... [Read More]

How to deal with super long SPF records

May 26, 2020 Zsolt Agoston
The SPF record a domain owns can have the maximum length of 255 characters. A longer record - or even nearly that long - is not advisable as recipient servers have a more difficult job to process all elements, especially ... [Read More]

Windows 2019 SSTP Server with only ONE NIC – Quick Guide

May 19, 2020 Zsolt Agoston
In this short guide we deploy a Windows-based SSTP server for clients. For details about the protocol and the way to deploy a linux-based implementation of the server that has auto-renewing SSL certificates, visit my guide HERE. Our test VM ... [Read More]

FREE SSTP VPN server on Linux with SoftEther

May 18, 2020 Zsolt Agoston
Always Hot Café needs a fast and cheap way to set up a VPN solution for it's workers. They don't want to invest in expensive hardware, or software. Also, the employees have Windows laptops and they want to use the ... [Read More]

Forward whole trunk ports to VMs in Proxmox

May 3, 2020 Zsolt Agoston
In certain scenarios we might need to forward a full VLAN trunk to a VM. In this article we go through a process of virtualizing a switch in ProxMox to achieve this easily. Before You Begin We assume the trunk ... [Read More]

They use 192.169.0.0/24 as a LAN subnet !!!

March 28, 2020 Zsolt Agoston
I’ve come across a company this week, while sorting the SSL certificate on their RRAS server I noticed that all of their nodes had 192.169.0.0/24 IP addresses assigned in their network. When I asked them about why they were using ... [Read More]

pfSense on the Stick

March 27, 2020 Zsolt Agoston
Recently I came across a situation where a small office needed a direct IPSec tunnel between two offices temporarily, but they only had a router from their ISP which was not configurable, or at least not by them and they ... [Read More]

 

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