RE: [OT] Network question

["Sullivan, Glenn" <gsullivan@xxxxxxxxxxxxxx>]

The only "reserved" addresses that start with 192 all have a
second
octet of 168.

IANA has set aside three ranges of IP addresses for use on Private
networks.  They are:


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)

So if you are trying to scan you entire internal network, you should
probably use 192.168.1.1 to 192.168.254.254.

Take a look at RFC1918 if you want more info:
http://www.ietf.org/rfc/rfc1918.txt

Glenn Sullivan, MCSE+I MCDBA
David Clark Company Inc.
-----Original Message-----
From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf
Of Dean Barrett
Sent: Friday, January 27, 2006 7:03 AM
To: ukha_d@xxxxxxx
Subject: [ukha_d] [OT] Network question

This'll teach me to mess with things i dont know.

Having lost the address of an IP camera i've downloaded a thing called
1st IP Port Scanner.

I decided to put an IP range of 192.1.1.1 to 192.168.1.1 hoping to find
it.

This is where i get lost - whilst i havent found my camera yet - i seem
to have found someone elses machines in the 192.1.1.x range.

Should i be able to do this ?? - i thought 192 was always behind a
router, and if i can see other peoples 192's does that mean people can
see mine ??

Im i just going off at a tangent - or slightly mad....



Dean.




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