Linux view network port and which IP address link __linux

computer for unknown reasons Ping Web site, but the Web page can open the URL, at this time need to know the IP address can use netstat command netstat command netstat command parameters:

Common parameter

-a (all) displays all options, default does not show listen-related-
T (TCP) only shows TCP-related options-
u (UDP) displays only UDP-related options----
reject the alias display, and can display all numbers converted to numbers. -
L lists only the Listen (listening) service status-

p shows the program name of the associated link-
r displays routing information, routing table-
e Displays extended information, such as UID, etc.
by each protocol-
C Execute the netstat command at every other fixed time.

get the IP of a URL that the browser Firefox opens:

    NETSTAT-ATNP | grep "Firefox"

Results:

You can get the IP of the page by opening only one page at this time