• Post Reply Bookmark Topic Watch Topic
  • New Topic

how to identify Intranet/Interbet IP address?

 
achit bhatnager
Ranch Hand
Posts: 50
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
We have an application that logs the user IP address. Management wants to see a report how many requests were from with in the orgnization and how many from outside.
How can I determine wheather the given ip address is internal or external?
Thanks in advance.
Achit
 
Joe Ess
Bartender
Posts: 9361
11
Linux Mac OS X Windows
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Ask your network admin what your organization's internal address range is. RFC 1918 specifies 3 blocks of addresses which are not assigned publically and are free for intranet use:
10.0.0.0 - 10.255.255.255 (10/8 prefix)
172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
A hit from within these ranges should be from an internal client.
 
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!