Network Tools

This section describe userful network tools, that will ease your administration tasks. Tool: tcpdump --------------------- By far the most usefull tool for a nework admin is tcpdump. This tool is presented in all good operating systems, FreeBSD, OpenBSD, NetBSD, Linux and Solaris, and other UNIXes. You will also find it here, with a lot of informations: http://www.tcpdump.org/ Tool: netstat ----------------- Very useful for a network admin, by default in FreeBSD, Linux and all UNIXes. Tool: nmap Site: http://insecure.org/nmap/index.html -------------------------------------------------------- Very usefull tool to test your network/server security, to scan for open ports, gather informations about operating systems, mac addresses, computers on your network, and much more. Tool: ntop Site: http://www.ntop.org/overview.html ------------------------------------------------------- ntop is a network traffic probe that shows the network usage, similar to what the popular top Unix command does. ntop is based on libpcap and it has been written in a portable way in order to virtually run on every Unix platform and on Win32 as well. Informations are accessible in a nice format from Web interface. Tool: Nagios Site: http://www.nagios.org/ -------------------------------------- Nagios is a very usefull tool to monitor your servers. You can monitor a http server, an email server (SMTP, POP3, IMAP), a database server, and other services. Tool: Cacti Site: http://www.cacti.net/ ----------------------------------- Nice tool to monitor your server, using SNMP. You can gather many informations with a lot of charts. Check screenshoots on their website.