TCP/IP Protocols By: Patrick Moore Nykoya Watson Andre Wiggins.

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Presentation transcript:

TCP/IP Protocols By: Patrick Moore Nykoya Watson Andre Wiggins

TCP/IP Protocols By: Patrick Moore Nykoya Watson Andre Wiggins

Connecting to a networkBrowsing the Web Calling a friend on Skype

Data

DHCPUDPIP

DHCPUDPIP

Dynamic Host Configuration Protocol (DHCP) Yo, Server! I can haz an IP Address, plz?

Data Yo, Server! I can haz an IP Address, plz? Data Yo, Server! I can haz an IP Address, plz? Dynamic Host Configuration Protocol (DHCP)

Application Layer: Transaction ID Client IP Address Assigned IP Address Requested IP Address Message Type Netmask Router IP DNS Server Lease Time

Dynamic Host Configuration Protocol (DHCP) Application Layer: Transaction ID Client IP Address Assigned IP Address Requested IP Address Message Type Netmask Router IP DNS Server Lease Time

Dynamic Host Configuration Protocol (DHCP) Application Layer: Transaction ID Client IP Address Assigned IP Address Requested IP Address Message Type Netmask Router IP DNS Server Lease Time

Application Layer: Transaction ID Client IP Address Assigned IP Address RequestedIP Address Message Type Netmask Router IP DNS Server Lease Time User Datagram Protocol Transport Layer: Source Port (67) Destination Port (68) Data Length Checksum Note: I’m connection-less!

Application Layer: Transaction ID Client IP Address Assigned IP Address Next Server IP Address Message Type Netmask Router IP DNS Server Lease Time User Datagram Protocol Transport Layer: Source Port (67) Destination Port (68) Data Length Checksum Note: I’m connection-less!

Transport Layer: Source Port (67) Destination Port (68) Data Length Checksum User Datagram Protocol Note: I’m connection-less!

Transport Layer: Source Port (67) Destination Port (68) Data Length Checksum Internet Protocol

IP Layer: Version Fragmentation Offset TTL (hops) Protocol Checksum Source IP Address Destination IP Address

Internet Protocol IP Layer: Version Fragmentation Offset TTL (hops) Protocol Checksum Source IP Address Destination IP Address

Internet Protocol IP Layer: Version Fragmentation Offset TTL (hops) Protocol Checksum Source IP Address Destination IP Address Off into the real world! Only to return with all of our requested data!

Weiner dog in a hot dog suit

HTTPTCPIP

Hypertext Transfer Protocol (HTTP) GET /index.html HTTP/1.1

Hypertext Transfer Protocol (HTTP)

Application Layer: HTTP Verb (Get/Post) URL ( Protocol (http) Version (1.1)

Hypertext Transfer Protocol (HTTP) Application Layer: HTTP Verb (Get/Post) URL ( Protocol (http) Version (1.1)

Hypertext Transfer Protocol (HTTP) Application Layer: HTTP Verb (Get/Post) URL ( Protocol (http) Version (1.1)

Application Layer: HTTP Verb (Get/Post) URL ( Protocol (http) Version (1.1) Transmission Configuration Protocol Transport Layer: Source Port Destination Port Sequence # ACK #

Application Layer: Transaction ID Client IP Address Assigned IP Address Next Server IP Address Message Type Netmask Router IP DNS Server Lease Time Transmission Configuration Protocol Transport Layer: Source Port Destination Port Sequence # ACK #

Transport Layer: Source Port Destination Port Sequence # ACK # Transmission Configuration Protocol

Transport Layer: Source Port Destination Port Sequence # ACK # Internet Protocol

IP Layer: Version Header Length TTL (hops) Protocol Source IP Address Destination IP Address

Internet Protocol IP Layer: Version Header Length TTL (hops) Protocol Source IP Address Destination IP Address

Making a Skype call. Hey I’m here… What type of firewall/Nat do you have? I’m ready to send you my IP address..

Yea… your IP looks like mine I know Right!!!

What happens when you make a skype call ?