iMasters - Redes: "Roteiro para deteccao e resolusao de problemas de rede
Nesta parte da serie apresentarei uma sequencia logica a ser seguida, para a deteccao e resolusao de problemas relacionados a conectividade de rede, para estacoes de trabalho e servidores, de uma rede baseada no protocolo TCP/IP. A cada passo, eu acrescentarei comentarios, para detalhar os pontos mais importantes. "

Postfix Admin: "Postfix Admin is a Web Based Management tool created for Postfix.
It is a PHP based application that handles Postfix Style Virtual Domains and Users that are stored in MySQL."

Ports: "Port Knowledgebase

List of frequently seen TCP and UDP ports and what they mean. The goal of this port table is to point to further resources for more information"

NirSoft - freeware utilities: password recovery, system utilities, desktop utilities: "NirSoft web site provides a unique collection of small and useful freeware utilities, all of them developed by Nir Sofer. In order to search for a freeware utility in NirSoft Web site, click here.
If you are looking for password-recovery tools, click here.
To view your IP address and other information, click here.
If you have a software-listing Web site, and you want to add the freeware utilities provided by NirSoft, click here
You can also find here some interesting Visual Basic code snippets, Visual C code samples, and freeware Components."

tofrodos: Convert text files to/from MSDOS/Windows/Unix (freeware): "What is Tofrodos?

Tofrodos is a text file conversion utility that converts ASCII files between the MSDOS (or Windows) format, which traditionally have CR/LF (carriage return/line feed) pairs as their new line delimiters, and the Unix format, which usually have LFs (line feeds) to terminate each line.

It is a useful utility to have around when you have to convert files between MSDOS (or Windows) and Unix/Linux/BSD (and her clones and variants). It comes standard with a number of systems and is often found on the system as 'todos', 'fromdos', 'dos2unix' and 'unix2dos'."

DbxConv: "DbxConv - DBX to MBOX converter by Ulrich Krebs

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version."

Gmail Tools

Linux: Instala�o e configura�o do Nagios 2.0b3 [Artigo]: "Instalação e configuração do Nagios 2.0b3
Este artigo trata de uma instalacao basica da versao mais nova do Nagios (2.0b3), que um programa capaz de monitorar os serviços das maquinas da sua rede."