Notes

tracert -d
tracert -h
tracert www

netstat
Proto Local Address Foreign Address State
TCP 172.21.0.2:1051 test1:https LISTENING
TCP 172.21.0.2:1146 test1:http ESTABLISHED
TCP 172.21.0.2:1631 server2:http CLOSE_WAIT
TCP 127.0.0.1:3466 server2:http ESTABLISHED
TCP 172.21.0.2:3468 de101s05-in-f1:http ESTABLISHED
TCP 127.0.0.1:3516 de101s05-in-f2:http ESTABLISHED
TCP 172.21.0.2:3525 de101s05-in-f10:1148 ESTABLISHED
TCP 172.21.0.2:3529 de101s05-in-f2:1632 ESTABLISHED
Great! What you just got above where all the TCP Connections running on the server.
Now, Use Netstat -a to display active TCP connections, TCP connections with the listening state, as well as UDP ports that are being listened to.
> netstat -a
Proto Local Address Foreign Address State
TCP 172.21.0.2:1051 test1:https LISTENING
TCP 172.21.0.2:1146 test1:http ESTABLISHED
TCP 172.21.0.2:1631 server2:http CLOSE_WAIT
TCP 127.0.0.1:3466 server2:http ESTABLISHED
TCP 172.21.0.2:3468 de101s05-in-f1:http ESTABLISHED
TCP 127.0.0.1:3516 de101s05-in-f2:http ESTABLISHED
TCP 172.21.0.2:3525 de101s05-in-f10:1148 ESTABLISHED
TCP 172.21.0.2:3529 de101s05-in-f2:1632 ESTABLISHED
UDP 0.0.0.0:500 *:*
UDP 10.10.0.48:5355 *:*
UDP 127.0.0.1:55875 *:*
UDP [::]:1434 *:*
UDP [::]:42114 *:*
Nice! Now, Use Netstat -n prevent netstat from attempting to determine host names for foreign IP addresses. Depending on your current network connections, using this switch could considerably reduce the time it takes for netstat to fully execute.
> netstat -n
Proto Local Address Foreign Address State
TCP 172.21.0.2:1051 10.10.0.10:443 LISTENING
TCP 172.21.0.2:1146 10.10.0.10:80 ESTABLISHED
TCP 172.21.0.2:1631 10.10.0.10:80 CLOSE_WAIT
TCP 127.0.0.1:3466 10.10.0.10:80 ESTABLISHED
TCP 172.21.0.2:3468 102.25.43.56:80 ESTABLISHED
TCP 127.0.0.1:3516 102.25.43.57:80 ESTABLISHED
TCP 172.21.0.2:3525 102.25.43.61:1148 ESTABLISHED
TCP 172.21.0.2:3529 102.25.43.57:1632 ESTABLISHED
Nice! Now, Use Netstat -o displays the process identifier (PID) associated with each displayed connection.
> netstat -o
Proto Local Address Foreign Address State Pid
TCP 172.21.0.2:1051 test1:https LISTENING 119
TCP 172.21.0.2:1146 test1:http ESTABLISHED 119
TCP 172.21.0.2:1631 server2:http CLOSE_WAIT 889
TCP 127.0.0.1:3466 server2:http ESTABLISHED 110
TCP 172.21.0.2:3468 de101s05-in-f1:http ESTABLISHED 590
TCP 127.0.0.1:3516 de101s05-in-f2:http ESTABLISHED 590
TCP 172.21.0.2:3525 de101s05-in-f10:1148 ESTABLISHED 590
TCP 172.21.0.2:3529 de101s05-in-f2:1632 ESTABLISHED 590
Nice! Now, Use Netstat -e show statistics about your network connection. This data includes bytes, unicast packets, non-unicast packets, discards, errors, and unknown protocols received and sent since the connection was established.
> netstat -e
Received Sent
Bytes 1277040290 94820583
Unicast packets 330637 919731
Non-unicast packets 112143 4533
Discards 1 1
Errors 1 326
Unknown protocols 0
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Now, try ipconfig or ipconfig /all again to see the renewed state of adapters. Once, you have seen it, Use ipconfig /displaydns to check all DNS Entries.
> ipconfig /displaydns
Windows IP Configuration
170.137.71.75.in-addr.arpa
----------------------------------------
Record Name . . . . . : 170.147.72.75.in-addr.arpa
Record Type . . . . . : 12
Time To Live . . . . : 1278
Data Length . . . . . : 8
Section . . . . . . . : Answer
PTR Record . . . . . : c-75-71-137-170.hsd1.co.comcast.net
www.computerhope.com
----------------------------------------
Record Name . . . . . : www.computerhope.com
Record Type . . . . . : 1
Time To Live . . . . : 83127
Data Length . . . . . : 4
Section . . . . . . . : Answer
A (Host) Record . . . : 69.72.169.241
feedburner.google.com
----------------------------------------
Record Name . . . . . : feedburner.google.com
Record Type . . . . . : 5
Time To Live . . . . : 199
Data Length . . . . . : 8
Section . . . . . . . : Answer
CNAME Record . . . . : www3.l.google.com
news.google.co.in
----------------------------------------
Record Name . . . . . : news.google.co.in
Record Type . . . . . : 5
Time To Live . . . . : 295
Data Length . . . . . : 8
Section . . . . . . . : Answer
CNAME Record . . . . : news-cctld.l.google.com
ssl.gstatic.com
----------------------------------------
Record Name . . . . . : ssl.gstatic.com
Record Type . . . . . : 1
Time To Live . . . . : 204
Data Length . . . . . : 4
Section . . . . . . . : Answer
A (Host) Record . . . : 74.125.236.143
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shutdown /r /t 00
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