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Appendix A Network Troubleshooting
P-870HN-51D User’s Guide
266
Use the -a parameter to display all possible connections to your device, not just
the ones that are currently in use:
The following table describes the three entries in the output example above:
C:\>netstat -a
Active Connections
Proto Local Address Foreign Address State
TCP COMPUTERA:http COMPUTERA:0 LISTENING
TCP COMPUTERA:http 172.16.x.x:4036 ESTABLISHED
TCP COMPUTERA:2744 NAS:microsoft-ds ESTABLISHED
TCP COMPUTERA:5152 172.16.x.x.ZyXEL.com:0 LISTENING
TCP COMPUTERA:5152 localhost:4067 CLOSE_WAIT
TCP COMPUTERA:5354 172.16.x.x.ZyXEL.com:0 LISTENING
TCP COMPUTERA:27015 172.16.x.x.ZyXEL.com:0 LISTENING
TCP COMPUTERA:40000 localhost:0 LISTENING
TCP COMPUTERA:40000 localhost:1120 ESTABLISHED
TCP COMPUTERA:netbios-ssn 172.16.x.x.ZyXEL.com:0 LISTENING
TCP COMPUTERA:4177 172.16.x.x:1155 ESTABLISHED
TCP COMPUTERA:4178 172.16.x.x:1155 ESTABLISHED
TCP COMPUTERA:4180 172.16.x.x:1155 ESTABLISHED
TCP COMPUTERA:4182 172.16.x.x:1025 ESTABLISHED
TCP COMPUTERA:4317 NAS:microsoft-ds ESTABLISHED
TCP COMPUTERA:4539 NAS:microsoft-ds TIME_WAIT
TCP COMPUTERA:netbios-ssn 172.16.x.x:0 LISTENING
TCP COMPUTERA:netbios-ssn 172.16.x.x:0 LISTENING
C:\>
Table 96 netstat -a Command Output
OUTPUT DESCRIPTION
TCP
COMPUTERA:http
COMPUTERA:0
LISTENING
A web server is available on COMPUTERA as an HTTP
service is in a LISTENING state.
TCP
COMPUTERA:http
172.16.1.29:4036
ESTABLISHED
A computer with an IP address of 172.16.1.29 is accessing
the web service on the COMPUTERA.
TCP
COMPUTERA:2744
NAS:microsoft-ds
ESTABLISHED
COMPUTERA has established a TCP/IP NETBIOS
connection (microsoft-ds) with a NAS device.