Download Network Administration

Network
Administration
What is a Systems
Administrator?
 Person responsible for:
 Setting up servers
 Configuring the environment for web and other
servers
 Managing database integration (depending on size
of the company)
 Setting up email
 Implementing security (also depending on company
size)
 Data Backup
 Software updates
 Hardware and software design and troubleshooting
What is a Network
Administrator?
 Person responsible for:
 Network changes (MACs)
 Layers 1-6 of OSI Model (usually not responsible for
applications)
 Network monitoring
 IDS (depends on company size)
 Firewall (depends on company size)
 Router, switch configurations
 Network architecture, design and troubleshooting
Network or System
Administrators?
 The work we’ve discussed in this class is
the role of the Network Administrator. The
Systems Administrator is more focused
on servers, server hardware, and
software.
Other Roles & Needed
Skillsets
 System Administration
 One or more of several network operating system
(NOS) platforms, including Unix, Windows, Novell
 Often SA’s have certificates (often MCSE) or Unix
certifications
 Experience! The more you see, the more rapidly you
can troubleshoot.
 A degree is helpful, especially if you want to move
into management
 Good communication skills – work with end users
Other Roles & Needed
Skillsets
 Network Administration
 Cisco Certification (CCNE Cisco Certified
Network Engineer)
 Security Certs
 Network Architecture & Design Experience
 More analytical skill, less work with end
users
Other Roles & Needed
Skillsets
 Security Administration
 Ensure that the organization's systems are secure and very difficult
to hack.
 As laws change protecting consumers, companies must
communicate security breaches. Becoming a very big deal!
 May keep watch over employees for inappropriate network usage.
 Dealing with viruses that threaten core equipment.
 In-depth firewall knowledge is required, as well as a solid
understanding of system hacking.
 In case a security breach could not be averted, it is the security
administrator’s responsibility to close the systems, determine
damages, trace the culprit and ensure that it doesn’t happen again.
Salaries – Careers to be
Considered..
 Zip code 92688 (South OC)
 Senior Network Administrator – Average salary of
$70,000 to $88,000
 Network Security Manager – Average Salary of
$62,000 to $103,000
 IT Manager – Average Salary of $88,000 to $116,000
 Network Planning Manager – Average Salary of
$97,000 to $112,000
 Senior Systems Administrator – Average Salary of
$73,000 to $94,000
Future Hot IT Fields
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Biotechnical (TechRepublic, 2004)
Security (TechRepublic, 2004)
Internet Marketing (CareerPlanner, 2004)
Internet Security
Security Markets
Source: About.com
IT Benefits
Source: Information Week
Network Management
 The other side of network “management”!
 In telecom, network management is the execution of
the set of functions required for controlling, planning,
allocating, deploying, coordinating, and monitoring the
resources of a telecommunications network, including
performing functions such as initial network planning,
allocation, predetermined traffic routing to support load
balancing, cryptographic key distribution, fault
management, security management, performance
management and accounting management.
SNMP
 Simple Network Management Protocol
(SNMP) is part of the internet protocol suite as
defined by the IETF. The protocol can be used
to monitor any network attached devices for
any conditions that warrant it.
 The first RFC’s for SNMP were published in
1988:
 RFC 1065 - Structure and Identification of
Management Information for TCP/IP-based internets
 RFC 1066 - Management Information Base for
Network Management of TCP/IP-based internets
 RFC 1067 - A Simple Network Management
Protocol
Side Note: RFC’s
 Request for Comments (RFC) document is one of a
series of numbered Internet informational documents
and standards widely followed by commercial software
and freeware in the Internet and UNIX communities.
The RFC series of documents on networking began in
1969 as part of the original ARPA Wide Area
Networking (ARPANET) project.
 It is the official publication channel for the Internet
Engineering Steering Group, Internet Architecture
Board, and the Internet community.
 RFCs cover many topics in addition to Internet
Standards, such as introductions to new research
ideas and status memos about the Internet. RFC are
published by the RFC Editor who is under the general
direction of the IAB.
SNMP Continued..
 Separation of the protocol from the structure of
management information has made it easy to use
SNMP to monitor hundreds of different types of
subsystems within a network, across all layers of the
OSI model, into applications, databases and email.
 The SNMP framework is based on 3 components.
Each IP addressable system in a network, such as a
node or router,, hosts a master agent for that system.
 A master agent typically limits its activity to parsing and
formatting of the protocol.
 If system has multiple manageable subsystems
present, the master agent passes on the requests it
receives to one or more subagents. These subagents
model what's interesting to manage about a subsystem
and interface to that subsystem for monitoring and
management operations.
Companies Offering SNMP
Applications
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CiscoWorks
What’sUp! Gold
Hewlett Packard HP OpenView
Unicenter