Home : unix

Network

Interesting network tools 
host - DNS lookup utility
iftop - display bandwidth usage on an interface by host xexamples
nc - TCP/IP swiss army knife
netstat - Print network connections, routing tables, interface statistics, masquerade connections, and multicast memberships
nmap - Network exploration tool and security / port scanner

FQDN

For Mint 14, in /etc/hosts ensure: 
127.0.1.1       miro.markcarter.me.uk miro
To check the fully-qualified name: hostname -f. It should return miro.markcarter.me.uk

Recipes

Stealthy scan of my website domain to what ports are exposed: 
   sudo nmap -sS markcarter.me.uk
or 
   netstat -lnp

Get your external IP address : 

   curl ifconfig.me

See also

  • mail - server and client

    Links to external sites

  • angry ipscan - network scanner designed to be fast and simple to use. It scans IP addresses and ports as well as has many other features. It can be installed on Arch Linux using yaourt.
  • MX Toolboox - excellent tool which connects to your mail server and prints diagnostic information.
  • scapy - nteractive packet manipulation program. It is able to forge or decode packets of a wide number of protocols, send them on the wire, capture them, match requests and replies, and much more. Possibly written in python. 
    Author:  Mark Carter
Created: 20-Jan-2007
Updated: 13-Apr-2013