444B/osi-resources

A table of resources to help teach about the OSI model and RFC equivalents

OSI Tables

Intro and explanation

The following tables and images are to provide a collection of linked resources for studying. The goal is to understand computers and communication protocols via the OSI model and its Protocols

General Overview of the OSI model

Layer	Means	PDU	Role
7 - Application	API's, Network Services	Data	Scribe
6 - Presentation	Reformats, Encrypts/Decrypt, Compress/Decompress	Data	Translator
5 - Session	Establishes, Manages and Ends Sessions	Data	Negotiator
4 - Transport	Segment ID / Assembler	Segments	Middle Manager
3 - Network	IP addressing / Routing	Packets	Mail Room Guy
2 - Data Link	Organizes Bits into Frames	Frames	Envelope Stuffer
1 - Physical	Movement of Bits	Bits	The Truck

Layer: 7 - Application

Name	Port	RFC	Resource
HTTP	80	2616
HTTPS/SSL/TLS	443	2818
NNTP	119	3977
FTP	21, 20	959
Telnet	23	854
SSH	22	4251 - Transport layer, 4252 - User Authentication layer, 4254 - Connection Layer
POP3	110	1939, 2449 - Extention, 1734 - Authentication
IMAP4	143
SMTP	25	5321
DNS	53	Too many to list, follow link to wikipedia
TFTP	69	1350
DHCP	67, 68	2131, Multiple on wikipedia
SNMP	162, 161	6353	5905
NTP, Read Wiki history	123
Syslog	514	5424

Layer: 6 - Presentation

Name	Protocol	Standard	Resource
JPEG
MIDI	Midi Protocol
MPEG
PICT
TIFF
ASCII

Layer: 5 - Session

Name	Port	RFC	Resource
NetBIOS
NFS
PAP
SCP
SQL
ZIP

Layer: 4 - Transport

Name	Port	RFC	Resource
TCP
UDP

Layer: 3 - Network

Name	Port	RFC	Resource
ICMP
IGMP
IPsec
IPv4
IPv6
IPX
RIP

Layer: 2 - Data Link

Name	Port	RFC	Resource
ARP
ATM
CDP
FDDI
Frame Relay
HDLC
MPLS
PPP
STP
Token Ring

Layer: 1 - Physical

Name	Port	RFC	Resource
Bluetooth
Ethernet
DSP
ISDN
WIFI

Resources list:

https://en.wikipedia.org https://tools.ietf.org/html/