System information

Chapter 5. Samba management and troubleshooting 93
Ethernet II
Destination: 00:02:55:7c:75:1b (IBM_7c:75:1b)
Source: 00:02:55:7c:75:18 (IBM_7c:75:18)
Type: IP (0x0800)
Internet Protocol, Src Addr: jojo (9.24.105.112), Dst Addr: portal1 (9.24.105.99)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 60
Identification: 0x330d
Flags: 0x04
.1.. = Don't fragment: Set
..0. = More fragments: Not set
Fragment offset: 0
Time to live: 64
Protocol: TCP (0x06)
Header checksum: 0x22ac (correct)
Source: jojo (9.24.105.112)
Destination: portal1 (9.24.105.99)
Transmission Control Protocol, Src Port: 32982 (32982), Dst Port: netbios-ssn (139), Seq:
1957020879, Ack: 0
Source port: 32982 (32982)
Destination port: netbios-ssn (139)
Sequence number: 1957020879
Header length: 40 bytes
Flags: 0x0002 (SYN)
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: 5840
Checksum: 0x19dc (correct)
Options: (20 bytes)
Maximum segment size: 1460 bytes
SACK permitted
Time stamp: tsval 17069693, tsecr 0
NOP
Window scale: 0 bytes
Frame 2 (74 on wire, 74 captured)
Since so much detailed information is produced, it will take time to understand the information
in the capture. A summary capture output showing the same client activity will help in
understanding the detailed capture output.