H Hex Packet Decoder

9,484,033 packets decoded

192.168.0.12 → 192.168.0.13 SMTP C: EHLO napier

0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
00	0C	29	0F	71	A3	00	0C	29	6A	94	C5	08	00	45	00
00	35	43	08	40	00	80	06	36	51	C0	A8	00	0C	C0	A8
00	0D	06	B1	00	19	F7	8A	E9	14	2D	7A	23	6F	50	18
FA	84	02	95	00	00	45	48	4C	4F	20	6E	61	70	69	65
72	0D	0A

4 protocols in packet (67 bytes):

Ethernet

IPv4

TCP

SMTP

Frame 1: 67 bytes on wire (536 bits)
- Section number: 1
- Interface id: 0 (Interface, hpd0)
  - Interface name: Interface, hpd0
- Encapsulation type: Ethernet (1)
- Arrival Time: Mar 10, 2026 15:35:50.000001000 CET
- UTC Arrival Time: Mar 10, 2026 14:35:50.000001000 UTC
- Epoch Arrival Time: 1773153350.000001000
- Time shift for this packet: 0.000000000 seconds
- Time delta from previous captured frame: 0.000000000 seconds
- Time delta from previous displayed frame: 0.000000000 seconds
- Time since reference or first frame: 0.000000000 seconds
- Frame Number: 1
- Frame Length: 67 bytes (536 bits)
- Capture Length: 67 bytes (536 bits)
- Frame is marked: False
- Frame is ignored: False
- Protocols in frame: eth:ethertype:ip:tcp:smtp
Ethernet II
- Destination: VMware_0f:71:a3 (00:0c:29:0f:71:a3)
  - .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
  - .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
- Source: VMware_6a:94:c5 (00:0c:29:6a:94:c5)
  - .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
  - .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
- Type: IPv4 (0x0800)
- Stream index: 0
Internet Protocol Version 4
- 0100 .... = Version: 4
- .... 0101 = Header Length: 20 bytes (5)
- Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
  - 0000 00.. = Differentiated Services Codepoint: Default (0)
  - .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
- Total Length: 53
- Identification: 0x4308 (17160)
- 010. .... = Flags: 0x2, Don't fragment
  - 0... .... = Reserved bit: Not set
  - .1.. .... = Don't fragment: Set
  - ..0. .... = More fragments: Not set
- ...0 0000 0000 0000 = Fragment Offset: 0
- Time to Live: 128
- Protocol: TCP (6)
- Header Checksum: 0x3651 [correct]
- Header checksum status: Good
- Calculated Checksum: 0x3651
- Source Address: 192.168.0.12
- Destination Address: 192.168.0.13
- Stream index: 0
Transmission Control Protocol
- Source Port: 1713
- Destination Port: 25
- Stream index: 0
- Stream Packet Number: 1
- Conversation completeness: Incomplete (0)
  - ..0. .... = RST: Absent
  - ...0 .... = FIN: Absent
  - .... 0... = Data: Absent
  - .... .0.. = ACK: Absent
  - .... ..0. = SYN-ACK: Absent
  - .... ...0 = SYN: Absent
  - Completeness Flags: [ Null ]
- TCP Segment Len: 13
- Sequence Number: 0xf78ae914
- Sequence Number (raw): 4153075988
- Next Sequence Number: 14
- Acknowledgment Number: 0x2d7a236f
- Acknowledgment number (raw): 762979183
- 0101 .... = Header Length: 20 bytes (5)
- Flags: 0x018 (PSH, ACK)
  - 000. .... .... = Reserved: Not set
  - ...0 .... .... = Accurate ECN: Not set
  - .... 0... .... = Congestion Window Reduced: Not set
  - .... .0.. .... = ECN-Echo: Not set
  - .... ..0. .... = Urgent: Not set
  - .... ...1 .... = Acknowledgment: Set
  - .... .... 1... = Push: Set
  - .... .... .0.. = Reset: Not set
  - .... .... ..0. = Syn: Not set
  - .... .... ...0 = Fin: Not set
  - TCP Flags: ·······AP···
- Window: 64132
- Calculated window size: 64132
- Window size scaling factor: -1 (unknown)
- Checksum: 0x0295 [correct]
  - Calculated Checksum: 0x0295
- Checksum Status: Good
- Urgent Pointer: 0
- Timestamps
  - Time since first frame in this TCP stream: 0.000000000 seconds
  - Time since previous frame in this TCP stream: 0.000000000 seconds
- SEQ/ACK analysis
  - Bytes in flight: 13
  - Bytes sent since last PSH flag: 13
- TCP payload (13 bytes)
Simple Mail Transfer Protocol
- Command Line: EHLO napier\r\n
  - Command: EHLO
  - Request parameter: napier

0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
00	0C	29	0F	71	A3	00	0C	29	6A	94	C5	08	00	45	00
00	35	43	08	40	00	80	06	36	51	C0	A8	00	0C	C0	A8
00	0D	06	B1	00	19	F7	8A	E9	14	2D	7A	23	6F	50	18
FA	84	02	95	00	00	45	48	4C	4F	20	6E	61	70	69	65
72	0D	0A

0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
00	0C	29	0F	71	A3	00	0C	29	6A	94	C5	08	00	45	00
00	35	43	08	40	00	80	06	36	51	C0	A8	00	0C	C0	A8
00	0D	06	B1	00	19	F7	8A	E9	14	2D	7A	23	6F	50	18
FA	84	02	95	00	00	45	48	4C	4F	20	6E	61	70	69	65
72	0D	0A

0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
00	0C	29	0F	71	A3	00	0C	29	6A	94	C5	08	00	45	00
00	35	43	08	40	00	80	06	36	51	C0	A8	00	0C	C0	A8
00	0D	06	B1	00	19	F7	8A	E9	14	2D	7A	23	6F	50	18
FA	84	02	95	00	00	45	48	4C	4F	20	6E	61	70	69	65
72	0D	0A