Can you infer the sequence numbers of the two segments that transfer data in the trace below ?
# |
Length |
Summary |
Status |
0 |
24 bytes |
Transmission Control Protocol, Src Port: 53706, Dst Port: 1234, Seq: 925123579, Len: 0 |
|
1 |
24 bytes |
Transmission Control Protocol, Src Port: 1234, Dst Port: 53706, Seq: 3658695655, Ack: 925123580, Len: 0 |
|
2 |
20 bytes |
Transmission Control Protocol, Src Port: 53706, Dst Port: 1234, Seq: 925123580, Ack: 3658695656, Len: 0 |
|
3 |
22 bytes |
Transmission Control Protocol, Src Port: 53706, Dst Port: 1234, Seq: ????, Ack: 3658695656, Len: 2 |
|
4 |
20 bytes |
Transmission Control Protocol, Src Port: 1234, Dst Port: 53706, Seq: 3658695656, Ack: 925123582, Len: 0 |
|
5 |
23 bytes |
Transmission Control Protocol, Src Port: 53706, Dst Port: 1234, Seq: ????, Ack: 3658695656, Len: 3 |
|
6 |
20 bytes |
Transmission Control Protocol, Src Port: 1234, Dst Port: 53706, Seq: 3658695656, Ack: 925123585, Len: 0 |
|
0000
d1
ca
04
d2
37
24
43
fb
00
00
00
00
60
02
70
80
0010
00
00
00
00
02
04
05
a0
0000
Ñ
Ê
.
Ò
7
$
C
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.
.
.
.
`
.
p
.
0010
.
.
.
.
.
.
.
.
- Transmission Control Protocol, Src Port: 53706, Dst Port: 1234, Seq: 925123579, Len: 0
- Source Port: 53706
- Destination Port: 1234
- Sequence number: 925123579
- Acknowledgment number: 0
- 0110 .... = Header Length: 24 bytes (6)
- Flags
- 000. .... .... = Reserved: Not set
- ...0 .... .... = Nonce: Not set
- .... 0... .... = Congestion Window Reduced (CWR): Not set
- .... .0.. .... = ECN-Echo: Not set
- .... ..0. .... = Urgent: Not set
- .... ...0 .... = Acknowledgment: Not set
- .... .... 0... = Push: Not set
- .... .... .0.. = Reset: Not set
- .... .... ..1. = Syn: Set
- .... .... ...0 = Fin: Not set
- Window size value: 28800
- Urgent pointer: 0
- Options: (4 bytes), Maximum segment size
- TCP Option - Maximum segment size: 1440 bytes
- Kind: Maximum Segment Size (2)
- Length: 4
- MSS Value: 1440
0000
04
d2
d1
ca
da
13
43
e7
37
24
43
fc
60
12
70
80
0010
00
00
00
00
02
04
05
a0
0000
.
Ò
Ñ
Ê
Ú
.
C
ç
7
$
C
ü
`
.
p
.
0010
.
.
.
.
.
.
.
.
- Transmission Control Protocol, Src Port: 1234, Dst Port: 53706, Seq: 3658695655, Ack: 925123580, Len: 0
- Source Port: 1234
- Destination Port: 53706
- Sequence number: 3658695655
- Acknowledgment number: 925123580
- 0110 .... = Header Length: 24 bytes (6)
- Flags
- 000. .... .... = Reserved: Not set
- ...0 .... .... = Nonce: Not set
- .... 0... .... = Congestion Window Reduced (CWR): Not set
- .... .0.. .... = ECN-Echo: Not set
- .... ..0. .... = Urgent: Not set
- .... ...1 .... = Acknowledgment: Set
- .... .... 0... = Push: Not set
- .... .... .0.. = Reset: Not set
- .... .... ..1. = Syn: Set
- .... .... ...0 = Fin: Not set
- Window size value: 28800
- Urgent pointer: 0
- Options: (4 bytes), Maximum segment size
- TCP Option - Maximum segment size: 1440 bytes
- Kind: Maximum Segment Size (2)
- Length: 4
- MSS Value: 1440
0000
d1
ca
04
d2
37
24
43
fc
da
13
43
e8
50
10
70
80
0010
00
00
00
00
0000
Ñ
Ê
.
Ò
7
$
C
ü
Ú
.
C
è
P
.
p
.
0010
.
.
.
.
- Transmission Control Protocol, Src Port: 53706, Dst Port: 1234, Seq: 925123580, Ack: 3658695656, Len: 0
- Source Port: 53706
- Destination Port: 1234
- Sequence number: 925123580
- Acknowledgment number: 3658695656
- 0101 .... = Header Length: 20 bytes (5)
- Flags
- 000. .... .... = Reserved: Not set
- ...0 .... .... = Nonce: Not set
- .... 0... .... = Congestion Window Reduced (CWR): Not set
- .... .0.. .... = ECN-Echo: Not set
- .... ..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 value: 28800
- Urgent pointer: 0
0000
d1
ca
04
d2
??
??
??
??
da
13
43
e8
50
18
70
80
0010
00
00
00
00
61
0a
0000
Ñ
Ê
.
Ò
?
?
?
?
Ú
.
C
è
P
.
p
.
0010
.
.
.
.
a
.
- Transmission Control Protocol, Src Port: 53706, Dst Port: 1234, Seq: ????, Ack: 3658695656, Len: 2
0000
04
d2
d1
ca
da
13
43
e8
37
24
43
fe
50
10
70
80
0010
00
00
00
00
0000
.
Ò
Ñ
Ê
Ú
.
C
è
7
$
C
þ
P
.
p
.
0010
.
.
.
.
- Transmission Control Protocol, Src Port: 1234, Dst Port: 53706, Seq: 3658695656, Ack: 925123582, Len: 0
- Source Port: 1234
- Destination Port: 53706
- Sequence number: 3658695656
- Acknowledgment number: 925123582
- 0101 .... = Header Length: 20 bytes (5)
- Flags
- 000. .... .... = Reserved: Not set
- ...0 .... .... = Nonce: Not set
- .... 0... .... = Congestion Window Reduced (CWR): Not set
- .... .0.. .... = ECN-Echo: Not set
- .... ..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 value: 28800
- Urgent pointer: 0
0000
d1
ca
04
d2
??
??
??
??
da
13
43
e8
50
18
70
80
0010
00
00
00
00
61
62
0a
0000
Ñ
Ê
.
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Ú
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C
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P
.
p
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0010
.
.
.
.
a
b
.
- Transmission Control Protocol, Src Port: 53706, Dst Port: 1234, Seq: ????, Ack: 3658695656, Len: 3
0000
04
d2
d1
ca
da
13
43
e8
37
24
44
01
50
10
70
80
0010
00
00
00
00
0000
.
Ò
Ñ
Ê
Ú
.
C
è
7
$
D
.
P
.
p
.
0010
.
.
.
.
- Transmission Control Protocol, Src Port: 1234, Dst Port: 53706, Seq: 3658695656, Ack: 925123585, Len: 0
- Source Port: 1234
- Destination Port: 53706
- Sequence number: 3658695656
- Acknowledgment number: 925123585
- 0101 .... = Header Length: 20 bytes (5)
- Flags
- 000. .... .... = Reserved: Not set
- ...0 .... .... = Nonce: Not set
- .... 0... .... = Congestion Window Reduced (CWR): Not set
- .... .0.. .... = ECN-Echo: Not set
- .... ..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 value: 28800
- Urgent pointer: 0