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G0TWN > PC 11.01.07 14:47l 69 Lines 2616 Bytes #-6988 (0) @ WW
BID : 11822G0TWN
Read: DK5SG GUEST DC9BM
Subj: Re: Machine name ?
Path: DB0FHN<DB0MRW<DK0WUE<DB0RES<DB0GOS<ON0AR<GB7CIP<GB7IMK<GB7IMK
Sent: 070111/1149z @:GB7IMK.#43.GBR.EU [Bletchley] MKGATE #:61360 $:11822g0twn
T:From: "G0TWN (David)" <g0twn@gb7imk.ampr.org>
T:Message-ID: <7qacq2hhrh6r5d9clv4ubvefiuj1sapiel@4ax.com>
On 10 Jan 2007 21:00:00 GMT, m1byt@gb7fcr.#16.gbr.eu (m1byt) wrote:
>R:070110/2100Z @:GB7FCR.#16.GBR.EU #:13650 [Blackpool] FBB-7.03a $:F23933M1BYT
>
>G0TEZ Opined with considerable skill:-
>> While playing about I found that my PC has a "Machine Name of the form.
>>
>> AA-999-999-999-999:aa99999.net
^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^
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hostname domainname
The combined hostname and domainname is your FQDN (Fully Qualified
DomainName. If you don't have a fixed IP address and domainname set
with your ISP then this is created by your ISP when you connect. It
is then usually a combination of your machines hostname and the
domainname of the IP address you were allocated upon connection.
You can change your hostname on your PC but you cannot obscure Your
FQDN. All servers log your access to their services by IP address.
If theyhave reverse-DNS set, this is converted to your FQDN.
Your example of a visit to a website. A log is kept of every pages
and its graphical content is logged. Also if you came to the site via
a link from another site, i.e. a search engine. And a whole lot more.
Only the potentually illicit activity of routing your packets via
another host would you start to obscure your systems FQDN.
Now an example from my web server log.
80-41-15-215.dynamic.dsl.as9105.com - - [11/Jan/2007:12:34:58 +0000]
"GET / HTTP/1.1" 200 8564 "-" "Mozilla/5.0 (Windows; U; Windows NT
5.1; en-GB; rv:1.8.0.9) Gecko/20061206 Firefox/1.5.0.9"
So a Tiscali customer who was allocated a dynamic IP address by their
ISP, visited my main page. It gives me the date and time. Also what
their OS and browser is.
The above is a legit visit to my web server but logging can quickly
show when a script kiddie is trying to hack in to any service that I
am running.
One thing to bear in mind is that, if your system didn't have an
indentity, how a web server know who it had to serve a webpage to?
To change your Hostname (Computer Name) in Windows XP, right mouse
click on the 'My Computer' icon. Select 'Properties' and then click
on the 'Computer Name' tab, to see where you can change it.
This bulletin was sent via G0TWN-10.taurus2.plus.com.
Regards from David G0TWN
Sysop GB7IMK [44.131.160.241]
IP Co-ordinator North Buckinghamshire - Region 160
TCP/IP via Packet Radio!
Ampr: g0twn@gb7imk.ampr.org
AX25: G0TWN@GB7IMK.#43.GBR.EU
Email: dhumble_at_gb7imk_dot_co_dot_uk
Inet: http://www.gb7imk.co.uk/
Ampr: http://gb7imk.ampr.org/
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