Source IP address
Source IP address field
1. SYN; 2. SYN, ACK; 3. ACK
1. SYN; 2. ACK; 3. SYN
1. SYN; 2. SYN; 3. ACK
1. SYN; 2. ACK; 3. ACK
Only the sender generates a sequence number.
Both the sender and receiver generate sequence numbers.
The sequence numbers for both the sender and the receiver must match.
Only the receiver generates a sequence number.
Operates at Layer 3 of the OSI model
Uses IP protocol number 17
Connection oriented to provide reliability
UDP header contains the sequence number field
Does not guarantee data delivery
First available port on the client system