TCP/IP
08/02/2005
 Christian CALECA 
Liste des cours

Suite de l'exemple de connexion...

Frame 11 (60 on wire, 60 captured)
    Arrival Time: Oct 12, 2000 11:19:15.4359
    Time delta from previous packet: 0.008790 seconds
    Frame Number: 11
    Packet Length: 60 bytes
    Capture Length: 60 bytes
Ethernet II
    Destination: 00:20:18:b9:49:37 (00:20:18:b9:49:37)
    Source: 00:20:18:61:90:e3 (00:20:18:61:90:e3)
    Type: IP (0x0800)
Internet Protocol
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Currently Unused: 0
    Total Length: 40
    Identification: 0x088e
    Flags: 0x04
        .1.. = Don't fragment: Set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 64
    Protocol: TCP (0x06)
    Header checksum: 0xafed (correct)
    Source: gateway1.maison.mrs (192.168.0.250)
    Destination: chris.maison.mrs (192.168.0.10)
Transmission Control Protocol, Src Port: pop3 (110), Dst Port: 1927 (1927)
    Source port: pop3 (110)
    Destination port: 1927 (1927)
    Sequence number: 4089248916
    Acknowledgement number: 3662573373
    Header length: 20 bytes
    Flags: 0x0010 (ACK)
        ..0. .... = Urgent: Not set
        ...1 .... = Acknowledgment: Set
        .... 0... = Push: Not set
        .... .0.. = Reset: Not set
        .... ..0. = Syn: Not set
        .... ...0 = Fin: Not set
    Window size: 32120
    Checksum: 0x6e34
Frame 12 (84 on wire, 84 captured)
    Arrival Time: Oct 12, 2000 11:19:15.5350
    Time delta from previous packet: 0.099119 seconds
    Frame Number: 12
    Packet Length: 84 bytes
    Capture Length: 84 bytes
Ethernet II
    Destination: 00:20:18:b9:49:37 (00:20:18:b9:49:37)
    Source: 00:20:18:61:90:e3 (00:20:18:61:90:e3)
    Type: IP (0x0800)
Internet Protocol
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Currently Unused: 0
    Total Length: 70
    Identification: 0x088f
    Flags: 0x04
        .1.. = Don't fragment: Set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 64
    Protocol: TCP (0x06)
    Header checksum: 0xafce (correct)
    Source: gateway1.maison.mrs (192.168.0.250)
    Destination: chris.maison.mrs (192.168.0.10)
Transmission Control Protocol, Src Port: pop3 (110), Dst Port: 1927 (1927)
    Source port: pop3 (110)
    Destination port: 1927 (1927)
    Sequence number: 4089248916
    Acknowledgement number: 3662573373
    Header length: 20 bytes
    Flags: 0x0018 (PSH, ACK)
        ..0. .... = Urgent: Not set
        ...1 .... = Acknowledgment: Set
        .... 1... = Push: Set
        .... .0.. = Reset: Not set
        .... ..0. = Syn: Not set
        .... ...0 = Fin: Not set
    Window size: 32120
    Checksum: 0x8064
Post Office Protocol
    Response: +OK
    Response Arg: Mailbox open, 0 messages
Frame 13 (60 on wire, 60 captured)
    Arrival Time: Oct 12, 2000 11:19:15.5359
    Time delta from previous packet: 0.000911 seconds
    Frame Number: 13
    Packet Length: 60 bytes
    Capture Length: 60 bytes
Ethernet II
    Destination: 00:20:18:61:90:e3 (00:20:18:61:90:e3)
    Source: 00:20:18:b9:49:37 (00:20:18:b9:49:37)
    Type: IP (0x0800)
Internet Protocol
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Currently Unused: 0
    Total Length: 46
    Identification: 0x7628
    Flags: 0x04
        .1.. = Don't fragment: Set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 128
    Protocol: TCP (0x06)
    Header checksum: 0x024d (correct)
    Source: chris.maison.mrs (192.168.0.10)
    Destination: gateway1.maison.mrs (192.168.0.250)
Transmission Control Protocol, Src Port: 1927 (1927), Dst Port: pop3 (110)
    Source port: 1927 (1927)
    Destination port: pop3 (110)
    Sequence number: 3662573373
    Acknowledgement number: 4089248946
    Header length: 20 bytes
    Flags: 0x0018 (PSH, ACK)
        ..0. .... = Urgent: Not set
        ...1 .... = Acknowledgment: Set
        .... 1... = Push: Set
        .... .0.. = Reset: Not set
        .... ..0. = Syn: Not set
        .... ...0 = Fin: Not set
    Window size: 17400
    Checksum: 0x05d6
Post Office Protocol
    Request: STAT
Frame 14 (63 on wire, 63 captured)
    Arrival Time: Oct 12, 2000 11:19:15.5366
    Time delta from previous packet: 0.000753 seconds
    Frame Number: 14
    Packet Length: 63 bytes
    Capture Length: 63 bytes
Ethernet II
    Destination: 00:20:18:b9:49:37 (00:20:18:b9:49:37)
    Source: 00:20:18:61:90:e3 (00:20:18:61:90:e3)
    Type: IP (0x0800)
Internet Protocol
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Currently Unused: 0
    Total Length: 49
    Identification: 0x0890
    Flags: 0x04
        .1.. = Don't fragment: Set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 64
    Protocol: TCP (0x06)
    Header checksum: 0xafe2 (correct)
    Source: gateway1.maison.mrs (192.168.0.250)
    Destination: chris.maison.mrs (192.168.0.10)
Transmission Control Protocol, Src Port: pop3 (110), Dst Port: 1927 (1927)
    Source port: pop3 (110)
    Destination port: 1927 (1927)
    Sequence number: 4089248946
    Acknowledgement number: 3662573379
    Header length: 20 bytes
    Flags: 0x0018 (PSH, ACK)
        ..0. .... = Urgent: Not set
        ...1 .... = Acknowledgment: Set
        .... 1... = Push: Set
        .... .0.. = Reset: Not set
        .... ..0. = Syn: Not set
        .... ...0 = Fin: Not set
    Window size: 32120
    Checksum: 0x8d62
Post Office Protocol
    Response: +OK
    Response Arg: 0 0
Frame 15 (60 on wire, 60 captured)
    Arrival Time: Oct 12, 2000 11:19:15.5379
    Time delta from previous packet: 0.001249 seconds
    Frame Number: 15
    Packet Length: 60 bytes
    Capture Length: 60 bytes
Ethernet II
    Destination: 00:20:18:61:90:e3 (00:20:18:61:90:e3)
    Source: 00:20:18:b9:49:37 (00:20:18:b9:49:37)
    Type: IP (0x0800)
Internet Protocol
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Currently Unused: 0
    Total Length: 46
    Identification: 0x7629
    Flags: 0x04
        .1.. = Don't fragment: Set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 128
    Protocol: TCP (0x06)
    Header checksum: 0x024c (correct)
    Source: chris.maison.mrs (192.168.0.10)
    Destination: gateway1.maison.mrs (192.168.0.250)
Transmission Control Protocol, Src Port: 1927 (1927), Dst Port: pop3 (110)
    Source port: 1927 (1927)
    Destination port: pop3 (110)
    Sequence number: 3662573379
    Acknowledgement number: 4089248955
    Header length: 20 bytes
    Flags: 0x0018 (PSH, ACK)
        ..0. .... = Urgent: Not set
        ...1 .... = Acknowledgment: Set
        .... 1... = Push: Set
        .... .0.. = Reset: Not set
        .... ..0. = Syn: Not set
        .... ...0 = Fin: Not set
    Window size: 17391
    Checksum: 0xffce
Post Office Protocol
    Request: QUIT
Frame 16 (68 on wire, 68 captured)
    Arrival Time: Oct 12, 2000 11:19:15.5431
    Time delta from previous packet: 0.005186 seconds
    Frame Number: 16
    Packet Length: 68 bytes
    Capture Length: 68 bytes
Ethernet II
    Destination: 00:20:18:b9:49:37 (00:20:18:b9:49:37)
    Source: 00:20:18:61:90:e3 (00:20:18:61:90:e3)
    Type: IP (0x0800)
Internet Protocol
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Currently Unused: 0
    Total Length: 54
    Identification: 0x0891
    Flags: 0x04
        .1.. = Don't fragment: Set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 64
    Protocol: TCP (0x06)
    Header checksum: 0xafdc (correct)
    Source: gateway1.maison.mrs (192.168.0.250)
    Destination: chris.maison.mrs (192.168.0.10)
Transmission Control Protocol, Src Port: pop3 (110), Dst Port: 1927 (1927)
    Source port: pop3 (110)
    Destination port: 1927 (1927)
    Sequence number: 4089248955
    Acknowledgement number: 3662573385
    Header length: 20 bytes
    Flags: 0x0018 (PSH, ACK)
        ..0. .... = Urgent: Not set
        ...1 .... = Acknowledgment: Set
        .... 1... = Push: Set
        .... .0.. = Reset: Not set
        .... ..0. = Syn: Not set
        .... ...0 = Fin: Not set
    Window size: 32120
    Checksum: 0x3cde
Post Office Protocol
    Response: +OK
    Response Arg: Sayonara

Fermeture propre de la connexion TCP

Frame 17 (60 on wire, 60 captured)
    Arrival Time: Oct 12, 2000 11:19:15.5437
    Time delta from previous packet: 0.000575 seconds
    Frame Number: 17
    Packet Length: 60 bytes
    Capture Length: 60 bytes
Ethernet II
    Destination: 00:20:18:61:90:e3 (00:20:18:61:90:e3)
    Source: 00:20:18:b9:49:37 (00:20:18:b9:49:37)
    Type: IP (0x0800)
Internet Protocol
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Currently Unused: 0
    Total Length: 40
    Identification: 0x762a
    Flags: 0x04
        .1.. = Don't fragment: Set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 128
    Protocol: TCP (0x06)
    Header checksum: 0x0251 (correct)
    Source: chris.maison.mrs (192.168.0.10)
    Destination: gateway1.maison.mrs (192.168.0.250)
Transmission Control Protocol, Src Port: 1927 (1927), Dst Port: pop3 (110)
    Source port: 1927 (1927)
    Destination port: pop3 (110)
    Sequence number: 3662573385
    Acknowledgement number: 4089248969
    Header length: 20 bytes
    Flags: 0x0011 (FIN, ACK)
        ..0. .... = Urgent: Not set
        ...1 .... = Acknowledgment: Set
        .... 0... = Push: Not set
        .... .0.. = Reset: Not set
        .... ..0. = Syn: Not set
        .... ...1 = Fin: Set
    Window size: 17377
    Checksum: 0xa789
Frame 18 (60 on wire, 60 captured)
    Arrival Time: Oct 12, 2000 11:19:15.5441
    Time delta from previous packet: 0.000395 seconds
    Frame Number: 18
    Packet Length: 60 bytes
    Capture Length: 60 bytes
Ethernet II
    Destination: 00:20:18:b9:49:37 (00:20:18:b9:49:37)
    Source: 00:20:18:61:90:e3 (00:20:18:61:90:e3)
    Type: IP (0x0800)
Internet Protocol
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Currently Unused: 0
    Total Length: 40
    Identification: 0x0892
    Flags: 0x04
        .1.. = Don't fragment: Set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 64
    Protocol: TCP (0x06)
    Header checksum: 0xafe9 (correct)
    Source: gateway1.maison.mrs (192.168.0.250)
    Destination: chris.maison.mrs (192.168.0.10)
Transmission Control Protocol, Src Port: pop3 (110), Dst Port: 1927 (1927)
    Source port: pop3 (110)
    Destination port: 1927 (1927)
    Sequence number: 4089248969
    Acknowledgement number: 3662573386
    Header length: 20 bytes
    Flags: 0x0010 (ACK)
        ..0. .... = Urgent: Not set
        ...1 .... = Acknowledgment: Set
        .... 0... = Push: Not set
        .... .0.. = Reset: Not set
        .... ..0. = Syn: Not set
        .... ...0 = Fin: Not set
    Window size: 32120
    Checksum: 0x6df2
Frame 19 (60 on wire, 60 captured)
    Arrival Time: Oct 12, 2000 11:19:15.5446
    Time delta from previous packet: 0.000508 seconds
    Frame Number: 19
    Packet Length: 60 bytes
    Capture Length: 60 bytes
Ethernet II
    Destination: 00:20:18:b9:49:37 (00:20:18:b9:49:37)
    Source: 00:20:18:61:90:e3 (00:20:18:61:90:e3)
    Type: IP (0x0800)
Internet Protocol
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Currently Unused: 0
    Total Length: 40
    Identification: 0x0893
    Flags: 0x04
        .1.. = Don't fragment: Set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 64
    Protocol: TCP (0x06)
    Header checksum: 0xafe8 (correct)
    Source: gateway1.maison.mrs (192.168.0.250)
    Destination: chris.maison.mrs (192.168.0.10)
Transmission Control Protocol, Src Port: pop3 (110), Dst Port: 1927 (1927)
    Source port: pop3 (110)
    Destination port: 1927 (1927)
    Sequence number: 4089248969
    Acknowledgement number: 3662573386
    Header length: 20 bytes
    Flags: 0x0011 (FIN, ACK)
        ..0. .... = Urgent: Not set
        ...1 .... = Acknowledgment: Set
        .... 0... = Push: Not set
        .... .0.. = Reset: Not set
        .... ..0. = Syn: Not set
        .... ...1 = Fin: Set
    Window size: 32120
    Checksum: 0x6df1
Frame 20 (60 on wire, 60 captured)
    Arrival Time: Oct 12, 2000 11:19:15.5448
    Time delta from previous packet: 0.000233 seconds
    Frame Number: 20
    Packet Length: 60 bytes
    Capture Length: 60 bytes
Ethernet II
    Destination: 00:20:18:61:90:e3 (00:20:18:61:90:e3)
    Source: 00:20:18:b9:49:37 (00:20:18:b9:49:37)
    Type: IP (0x0800)
Internet Protocol
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Currently Unused: 0
    Total Length: 40
    Identification: 0x762b
    Flags: 0x04
        .1.. = Don't fragment: Set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 128
    Protocol: TCP (0x06)
    Header checksum: 0x0250 (correct)
    Source: chris.maison.mrs (192.168.0.10)
    Destination: gateway1.maison.mrs (192.168.0.250)
Transmission Control Protocol, Src Port: 1927 (1927), Dst Port: pop3 (110)
    Source port: 1927 (1927)
    Destination port: pop3 (110)
    Sequence number: 3662573386
    Acknowledgement number: 4089248970
    Header length: 20 bytes
    Flags: 0x0010 (ACK)
        ..0. .... = Urgent: Not set
        ...1 .... = Acknowledgment: Set
        .... 0... = Push: Not set
        .... .0.. = Reset: Not set
        .... ..0. = Syn: Not set
        .... ...0 = Fin: Not set
    Window size: 17377
    Checksum: 0xa788