Cybersec Notes and Links(A.I & N10-007)

[Links]
{Learn Visual Basic}https://learnxinyminutes.com/docs/visualbasic/
{Ideas For Python Programming}https://projecteuler.net/archives & https://exercism.io/tracks/python/exercises
{A.I with Python}http://letzgro.net/blog/creating-ai-using-python/
{List of Different Vulns and how they work}https://www.veracode.com/security/arp-spoofing
{ARP in python}https://0x00sec.org/t/quick-n-dirty-arp-spoofing-in-python/487
|Side Notes for Links|
So the site with the list of vulnerabilities seems very much useful and potentially could be added to Ein(Who has now switched to a completely DIFFERENT token and has yet to be ran 24/7)

[N10-007 Notes]

{/OSI Models/Layers/}
|It would seem that the OSI  model is upside down in terms of how a networking a built(i.e the hardware portions seem to be the last layer and not the first.) I find it odd that somehow some people can memorize this BS considering how much shit (tiny components) go into this sorta thing|

{Layer 1: Physical}
Cables/BITS
Physical/Electrical Stage
Conversion btwn Data -> Signal
Includes :
Voltages
Cable Specifications
NIC

{Layer 2: Data Link}
Access
Transfer from PT2PT(Point 2 Point)
+MAC address (unique)
Package Bits/Data into Frames
Need to map this point -> point

{Layer 3: Network}
Referred to as IP Layer
functional means of transferring data through one or more networks
translate logical addresses to Physical
Performs :
Network Routing Functions
Fragmentation/Re-Assembly
Routers Layer 3

{Layer 4: Transport}
Management/Control
Transfer of data
Split Communications into packages
Types :
TCP - Reciept
UDP - No Verification; Mostly used for streaming

{Layer 5: Session}
Traffic Control
Controls Connections between Computers
Establish, Manage, And Terminate, Connections
Regulates when computer can send/ how much
Co-ordinates conversation

{Layer 6: Presentation}
Translates applications to another form
Independence from differences in Data representation
Formats Data
	-Encryption/Decryption
Exception : you cant have a text document sent through the network & then have the Presentation layer transform it into a .docx

{Layer 7: Application}
Network Access
Enables Apps to access the net
Identify communication partners
Determine resource available
Sync communications
Includes protocols like :
	-SMTP(Simple Mail Transfer Protocol)
	-HTTP(Hypertext Transfer Protocol)
	-FTP(File Transfer Protocol)
[TCP/IP MODEL OVERVIEW]
A way to remember this is NITA (Never Eat Toxic Apples)
Layer 1-2 : Network Interface
Layer 3 : Internet Layer
Layer 4 : Transport Layer
Layer 5-7 : Application Layer
To Remember The Names of each Layer You can use PDNTSPA (Please Do Not Throw Sausage Pizza Away)
Please -Physical
Do - Datalink
Not - Network
Throw - Transport
Sausage - Session
Pizza - Presentation
Away - Application
I actually like this way of remembering it.

[Devices & Protocols in Relation to OSI Model]
{Packet}
-Layer 3 Protocol Delivery Unit
-Segment of Data

{Switch}
-Layer 2 -Data Link
-Map to MAC Address

{Router}
-Layer 3 - Network
-Sometimes called Layer 3 Switch
-Moves Data across Networks

{Multi-Layer Switch}
-Layer 2 /& 3
-Performs at multiple layers

{MAC Addresses}
-Layer 2 - Data Link
-Physical Address

{IP Address}
-Layer 3 - Network Layer
-Logical Address Mapped to Physical

{EUI-64}
-Layer 2 - Data Link
-IPV6 Global Unicast

{Frames}
-Layer 2 Protocol Delivery Unit
-Segment of Data W/Begin/End

[Devices & Protocols in Relation to OSI Model (part 2)]
Layer 1 - Physical
	-Touch, Measure, See
Layer 2 - Data Link
	-point2point(p->p) Connectivity
Layer 3 - Network
	-IP Addresing/Routing
Layer 4 - Transport
	-TCP/UDP
Layer 5  - Session
	-Connection Management
Layer 6 - Presentation
	-Format Data
Layer 7 - Application
	-Application Management

[IP Addresses in Relation to OSI Model]
{IP Addresses}
	IP Addresses are logically mapped to a Physical Address
{Structure / Binary}
	IPV4 are 32-bit Addresses
	Divided into 4 octets
	Sections in powers of 2
	Each octet is between 0 - 255
{Classes}
	IP Addresses has "Network"/"Host"
	Class for IP Addressing
		>Class A
			- 1.0.0.0 -> 126.0.0.0
				>255.0.0.0
		>Class B
			- 178.0.0.0 -> 191.255.0.0
				>255.255.0.0
		>Class C
			- 192.0.0.0 -> 223.255.255.0
				>255.255.255.0
		>Class D
			-224.0.0.0 -> 239.0.0.0
[APIPA (part 1)]
	-Automatic Private IP Address
	-169.254.x.x
	-When DHCP(Dynamic Host Configuration Protocol) Is Unavailable
{Public vs Private}
 Class A
IP > 10.0.0.0 -> 10.255.255.255
SM > 255.0.0.0(18)

https://github.com/zardus/ctf-tools