Networking in a Linux Environment

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Networking in a Linux Environment

• Pete Eby
• Dan Thomas
• Robert Zurawski

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Why Linux?

• 60 of web hosting is Linux based
• Linux is Open Source
• As effective as paid solutions
• Free to change for your needs scalable
• Widely supported

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Nagios

• Network Monitor
• Easy integration into existing networks
• GUI can immediately alert you to network errors
• Supports server, client, printer, and service
  monitor
• Can use environment sensors as well

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Cacti

• Network statistics tool
• Uses Round Robin Archives
• MySQL PHP Based Customizable
• Robust and precise graphs
• Highly configurable
• Great network management tool

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Nmap/Zenmap

• Network security auditing tool
• Find live hosts, report on any services that are
  running, detect the OS of the scanned
  system, and report on the version of the OS
  and services detected
• Strong port scanner
• Highly configurable
• Helps to harden your network from
• attacks

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Iptraf

• Reports network traffic
• Supports a wide range of traffic including IP,
  TCP, UDP, ICMP, IGMP, IGP, IGRP, OSPF,
  ARP, and RARP
• Interfaces supported loopback, ethernet, FDDI,
  SLIP, Async PPP, Sync PPP over ISDN, ISDN
  IP encapsulation, ISDN Cisco HDLC
  encapsulation, and Parallel line IP
• Useful tool for determining what traffic is
• traveling on the network and where
• it is going

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Mtr

• Combination of ping and traceroute
• Mtr reports current, last, best, and worse
  latency, loss percentage, and sent packets to
  each hop that is taken to the destination
• Allows troubleshooting of any links that are
  down or might be running slow

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Sources

• Linux Distros
• http//distrowatch.com/ http//www.ubuntu.co
  m/getubuntu/download
• Nagios http//www.nagios.org/
• Cacti http//www.cacti.net/
• nmap http//nmap.org/zenmap/
• Iptraf http//iptraf.seul.org/
• mtr http//winmtr.sourceforge.net/