2016-11-15 20:14:38 -05:00
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Class on 11/15, 11/17 then break and resume on 12/1
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Link to look at: https://app.box.com/s/8tso8h5kerhy83qipb4bujkpc4bj0eoq
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Game plan:
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11/15 Night 1: Grab docs, discussion on syllabus
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11/17 Night 2: Basic networking and IP addressing
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12/01 Night 3: Basic/Advanced networking, intro to hardware configuration (firewalls)
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12/06 Night 4: Network security design (part 1) plus Operating Systems basics, possibly even web security
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12/08 Night 5: Network security design (part 2) plus basics of IDS, IPS, HIDS
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12/13 Night 6: Wrap up of all covered topics
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11/15
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Can't protect it, unless you understand how it moves.
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discussion about how this meeting works at the networking layer:
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Starts with discussion with the 7 layer OSI model (https://mplsnet.files.wordpress.com/2014/06/osi-model.gif)
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Every layer of the OSI model adds its own header, Data layer also adds a footer.
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Physical layer doesn't add any overhead because it's the bottom layer
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Top 3 layers (application, presentation, session) are the data. In the TCP/IP model this is the application layer
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Layer 4 (transport) are the segments, TCP/IP is also transport
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Layer 3 (network) is the packets, TCP/IP is the Internet layer
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Layer 2 (data link) is the frames and part of the TCP/IP Network Access layer
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Layer 1 (physical) comprises the bits and is the other part of the TCP/IP Network Access layer
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Homework:
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Chapter 1 & 2 of CompTIA network+
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Joke:
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(q) You're being chased by a group of clowns, what do you do when you turn around to confront them?
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(a) Go for the juggler
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2016-11-17 21:40:56 -05:00
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11/17
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Node: Any device that carries an IP address
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OSI Model Continued:
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Physical is concerned with the transmission of data on the network
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Data Link Layer
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2 parts:
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MAC - Media Access Control
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physical addressing, logical topology, method of transmitting on the media
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LLC - Logical Link Control
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connection services, synchronizing transmissions
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Homework:
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Read through remainder of chapter 2, chapter 3 (specifically the Network Infrastruction Devices)
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2016-12-22 20:26:26 -05:00
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12/01
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Discussion on Gen1 firewalls, (routers) filter based on macs, ips, networks, ports
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Gen3 firewalls - stateful packet inspecting, much better but can be circumnavigated
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IDS (&NIDS/HIDS)
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Way too much time spent on binary math (subnetting)
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12/06
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Nothing worth noting...
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Primarily a 3 hour discussion covering how bit math on addresses and routes is used for security.
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12/08 - Cancelled
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12/13
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Policies, Standards, Governance and Guidelines. Guidelines are last in line.
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How important is remote access to your customer?
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SSL/TLS, -> TLS Ephemeral keys are the way to go
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