TEK@link

12 Minutes

Network

When a gateway says: “I’am not a good gateway… set redirection!”

atlink'admin July 23, 2019 0 Comment

In this blog we explore how a gateway (a router) present in a LAN handles routing to the outside of this network and use redirection to enhance this operation. lab setup Our lab setup...

5 Minutes

Network

Routing from scratch… Part 1

atlink'admin July 1, 2019 0 Comment

In this serie of posts we’ll explore routing operation. Let’s start from the general idea of how could we manage trafic, a move from one location to another… In the example of the figure...

4 Minutes

Network Security

SSL VPN to my home network

atlink'admin June 12, 2019 0 Comment

In this blog let’s try to connect to a home network from outside (internet) in a secure manner using SSL. NAT and PAT NAT and PAT is what allowed local IP addresses translation or...

4 Minutes

Network

What is the best way of subnetting?

atlink'admin March 13, 2019 0 Comment

In this post, let’s recall what is subnetting (for routing and switching purposes) and how it is done. introduction and motivation Network subnetting is very important subject that maybe referred to as VLSM for...

5 Minutes

Network

How speed is my Ethernet cable?

atlink'admin March 12, 2019 0 Comment

In this post let’s talk about cabling, especially ethernet cabling to meet speeds of 1 gig. 4 elements are discussed : operation as described in the standard, awg metric, pinout and twist. Alternatives to...

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