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Networking


Networking


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]
Networking

How to set localhost IPv4 instead of IPv6

March 13, 2022 Zsolt Agoston
Learn how to make the IPv4 address the preferred address on your Windows hosts ... [Read More]
Networking

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]
Networking

How to Flush ARP cache in Windows, Linux and MacOS

November 14, 2020 Zsolt Agoston
With certain network changes you might end up with nodes in your network having issues contacting other hosts outside of their subnet. A typical scenario is when the default gateway's IP is re-assigned to a new router and the old ... [Read More]
Networking

Ping Sweep Without Nmap with Native Tools in Linux, Windows, macOS

November 12, 2020 Zsolt Agoston
Ping sweeping is a basic technique to find active hosts on a network. You might be looking for a particular host in your infrastructure, like a network printer, or you simply want to assign a static IP to a new ... [Read More]
Networking

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]
Networking

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]
Networking

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]
Networking

One Interface, multiple VLAN IPs on Linux

March 29, 2020 Zsolt Agoston
To make use of a trunk interface connected to our linux box with a single interface we can configure subinterfaces accessing specific VLAN segments, here we will use Debian and RHEL, assigning two subinterfaces, to each, on will use DHCP ... [Read More]
Networking

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]
Networking

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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