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Wrapup
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Overview First half Last half
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First half
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First Half Shells What is a shell and what does it do
Most popular shells Redirection shell variables environment export and environment
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First Half Scripting Centered on BASH Basic operators
(conditionals, if, test, case, for, while, here docs, trap, signals, etc)
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First Half Utilities and Filters What are filters and why to use them
Filter examples (tail, diff, etc) Basics of regular expressions grep sed
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First half NTP Syslog Centralized clock
Many networked programs need a synchronized clock Syslog Need a common clock when monitoring errors on a network
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First half SSH DNS Distributed File Systems RAID DNSSec NFS SMB SAN
NAS RAID
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First Half System Auditing System Hardening Run levels
Services/Daemons iptables permissions Account management System Hardening basic practices vulnerability databases
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Last half Wireless I and II
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Last Half
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Last Half Network Auditing Network Hardening hardware roles Tools
(hubs, switches, routers, etc.) Tools (ping, nmap, wireshark, etc.) Network Hardening firewalls dhcp hazards rogue devices vpn roles
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Last half User Management LDAP eMail Keberos Good as standalone
Better when teamed with another product TLS SPF Verifies a domains valid mail servers Does not validate content
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Last Half Replication Load Balancing Types: What is it Differences
Primary/backup Master/Slave Multi-master Load Balancing What is it Round Robin Reverse Proxies Differences How to do
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Last Half System Administration su sudo special attributes
(suid, guid, sticky bit) booting basics init device files file systems tar, compress, gzip and zip package management Why?
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Last Half SNMP basics of protocol security concerns
Most common version Most secure version
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Last Half Configuration Management Security Policies
What is supposed to be on the systems What IS on the systems Security Policies Policies Procedures Objectives Confidentiality Integrity Availability
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Last Half AWK who named for how to spell basic use
$n is the field on a line blank is default delimiter what is default std out role of BEGIN and END
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