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cs312-lecture11_slides

cs312-lecture11_slides - CS 312 Linux System Administration...

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CS 312 Linux System Administration 11: Networking Jeff Sheltren & Lance Albertson OSU Picture © Greg Keene used under CC SA 3.0 license
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Today's Objectives Networking DNS Kernel Settings
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Setting up networking Assign IP & Hostname Configure host interfaces at boot time Setup default route Add to DNS
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DHCP Dynamic Host Configuration Protocol IP addresses, netmasks, & gateways DNS servers Syslog, TFTP, ntp Common applications dhcpcd dhclient
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CentOS Networking Each Distribution is different /etc/sysconfig/network /etc/sysconfig/network-scripts/ /etc/hosts
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Network commands ifconfig – setup interfaces route – add/show routing information Netstat – show routing information arp – show/del arp cache ethtool – interface hardware settings
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Firewalls Primary tool: iptables Inspects IP packets Primary Chains INPUT OUTPUT FORWARD
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DNS Domain Name System /etc/resolv.conf Types of records A = name to IP CNAME = name to name MX = email exchanger
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