/media/sda-magnetic/david/Dok-15-2023-11-27/fernuni-hagen/cs-i-ii/old-cs-2-03/postfix/tcpippaket.txt

TCP-Segment:


TCP-Header:

Source Port                 (Quellport)             2 Byte
Destination Port            (Zielport)              2 Byte
Sequence Number                                     4 Byte
Acknlowledgement Number     (Quittierungsnummer)    4 Byte
Data Offset                                         4 Bit
Reserved                                            4 Bit
Control Flag                                        8 Bit
(Recieve) Window                                    2 Byte
Checksum                                            2 Byte
Urgent Pointer                                      2 Byte
Options                                             0-40 Byte


IP-Paket - IPv4:

Version                                             4 Bit (0 bis 3)
IHL                                                 4 Bit (3 bis 7)
TOS                                                 8 Bit (8 bis 15)
Total Length                                        16 Bit (16 bis 31)
Identification                                      16 Bit 
Flags                                               4 Bit 
Fragment Offset                                     28 Bit
TTL                                                 8 Bit
Protokol                                            8 Bit
Header Checksum                                     16 Bit
Source Adress                                       32 Bit
Destination Adress                                  32 Bit
Options and Pading (optional)                       32 Bit