networking

Rogue DHCP fix

21st April 2022

DHCP (Dynamic Host Configuration Protocol) when a device is connected to a network, it shouts for an IP address. the DHCP server answers with an unused IP address, default gateway…

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MTU Testing

18th March 2022

Background: When packets get transported they are cut into manageable chunks because routers & switches only have a limited amount of RAM. Normally each chunk is 1500 bytes BUT when…

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Ubiquiti Unifi Aggregating Switch ports

29th June 2021

Ubiquiti makes switching hardware that is inexpensive and easy to manage. They also have a cloud service that makes switching and Wifi hardware manageable from anywhere connected to the internet….

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A case for port security

12th June 2021

Port security watches for multiple MAC addresses on a port and if it detects >1 it disables the port. Pros:+If a user tries running responder, the port gets disabled+If a…

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