IP Header

IP Version (4 bits)

Header Length (4 bits)

TOS (8 bits)

Total Length in Bytes (16 bits)

20 Bytes

Identification (16 bits)

Flags (3 Bits) 

Frag Offset (13 bits)

TTL (8-bits)

Protocol (8 bits)

Checksum (16 bits)

Source IP address (32 bits)

Destination IP address (32 bits)

IP Options (0-39 bytes)

Data (Unlimited Size)

TCP Header

Source Port (16 bits)

Destination Port (16 bits)

20 Bytes

Sequence Number (32 bits)

Acknowledgment Number (32 bits)

Header Length (4 bits)

Reserved (6 bits)

URG

ACK

PSH

RST

SYN

FIN

Window Size (16 bits)

TCP Checksum (16 bits)

Urgent Pointer (16 bits)

TCP Options

Data