Hardware - Protocols and the OSI Layers

 

OSI Layers

Layer 1 - Physical

• Transceiver
• Repeater
• Hub
• Media Converter
• Modem

Layer 2 - Data Link 

• NIC
• Bridge
• Switch 
• Wireless Access Point
• MAC Address (AKA Layer 2, hardware, & physical address)
• 802.3
• 802.11

Layer 3 - Network

• Router
• Layer 3 Switch
• IP
• IPSec
• ICMP
• IGMP

Layer 4 - Transport

• Multilayer switch
• Load balancer
• Firewalls
• IDS (Intrusion Detection System
• TCP
• UDP

Layer 5 - Session

• Establishes, maintains, & tears down the session

Layer 6 - Presentation

• Data formatting and data translation
• Encryption
• Compression
• IMAP
• JPEG
• MPEG
• SSH
• SSL

Layer 7 - Application

• Multilayer switch
• NGFW
• DNS
• FTP
• HTTP
• HTTPS
• SMTP