Wrapup

Overview First half Last half

First half

First Half Shells What is a shell and what does it do Most popular shells Redirection shell variables environment export and environment

First Half Scripting Centered on BASH Basic operators (conditionals, if, test, case, for, while, here docs, trap, signals, etc)

First Half Utilities and Filters What are filters and why to use them Filter examples (tail, diff, etc) Basics of regular expressions grep sed

First half NTP Syslog Centralized clock Many networked programs need a synchronized clock Syslog Need a common clock when monitoring errors on a network

First half SSH DNS Distributed File Systems RAID DNSSec NFS SMB SAN NAS RAID

First Half System Auditing System Hardening Run levels Services/Daemons iptables permissions Account management System Hardening basic practices vulnerability databases

Last half Wireless I and II

Last Half

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

Last half User Management LDAP eMail Keberos Good as standalone Better when teamed with another product eMail TLS SPF Verifies a domains valid mail servers Does not validate content

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

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?

Last Half SNMP basics of protocol security concerns Most common version Most secure version

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

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