Networking in a Linux Environment

Pete EbyDan Thomas

Robert Zurawski

Why Linux?

60% of web hosting is Linux basedLinux is Open Source As effective as paid solutions Free to change for your needs – scalableWidely supported

Nagios

Network MonitorEasy integration into existing networksGUI can immediately alert you to network errorsSupports server, client, printer, and service monitorCan use environment sensors as well

Cacti

Network statistics toolUses Round Robin Archives MySQL & PHP Based – Customizable Robust and precise graphsHighly configurableGreat network management tool

Nmap/Zenmap

Network security auditing toolFind 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 detectedStrong port scannerHighly configurableHelps to harden your network from attacks

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

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 destinationAllows troubleshooting of any links that are down or might be running slow

SourcesLinux Distros

http://distrowatch.com/ http://www.ubuntu.com/getubuntu/downloadNagios http://www.nagios.org/Cacti http://www.cacti.net/nmap http://nmap.org/zenmap/Iptraf http://iptraf.seul.org/mtr http://winmtr.sourceforge.net/