My Howtos and Projects

This blog is about: Open Source, Operating Systems (mainly linux), Networking and Electronics The information here is presented in the form of howtos. Sometimes the information migth be in portuguese! As vezes a informação pode estar em portugues!

Thursday, August 7, 2014

Cisco – Modify / Fix Config via SNMP (SSH example)

Fixing SSH access on cisco via SNMP Sometimes you may encounter a situation, when your SSH is not properly configured. In this situation ...

Sunday, August 3, 2014

Spanning Tree – PVST / PVST+/ MST – Bridge ID and Root Selection

Spanning Tree Protocol: Bridge ID, Priority, System ID Extension & Root Bridge Election Process Written by Arani Mukherjee. Posted in ...

Spanning Tree – STP / RSTP - Port Costs and States

Spanning Tree Protocol, Rapid STP Port Costs - Port States Written by Arani Mukherjee. Posted in Spanning Tree Protocol (STP) Spanning T...

Spanning Tree – Principles

Spanning Tree Protocol – Understand STP Principles, Redundant Network Links & Broadcast Storms Written by Arani Mukherjee. Posted in S...

Sunday, July 6, 2014

Cisco NAT – Port Forwarding a Range of Ports

One question that comes up very often is “How do I port forward a range of ports?” Normally the answer is that you can’t or that you need to...

Saturday, June 28, 2014

Cisco IP NAT – Extendable Option

Recently at work I ran across a weird static NAT implemention, where it had the “ extendable ” key word, and the router had two Internet con...

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