IP assignment for virtual webhosting

Thu May 11 13:54:34 CEST 2000

Strato is not a good example...

for a), you pointed out the important thing: It's inaccurate. If it would
only be CPU-Power, you could use an own machine fopr that.
forb), the main problem is to write such a software. Who of us has the time
to do so? It would be very cool to have such a piece of software, but who
can develop it? Or is there something that is capable to do so?
Second problem, as you noticed, there could be a need to change your
betwork layout. Our backbone is switched, and not every switch (in the
Server-Racks we don't use the expensive Ciscos, there are simple Switches
without Monitor-Port). So you would have to place the sniffer a) on the
firewalls or the routers -> not a good idea - think of CPU, Diskspace, ..
or b) but not always possible put in in the transfernet between firewalls
and borderrouters. b) could be a olution for us if there were some kind of
software usable for that.

Greetings

Henning Brauer
Hostmaster BSWS

------------------------------------------------
BS Web Services
Roedingsmarkt 14
20459 Hamburg
Germany

info at bsmail.de
www.bsws.de

fon: +49 40 3750357-0
fax: +49 40 3750357-5

PLEASE USE EMAIL WHERE POSSIBLE

                    Entire Systems                                                                                               
                    NOC                   To:     "lir-wg at ripe.net" <lir-wg at ripe.net>                                            
                    <noc at entire-sy        cc:                                                                                    
                    stems.com>            Subject:     Re: IP assignment for virtual webhosting                                  
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                    ipe.net                                                                                                      

                    11.05.00 13:30                                                                                               

On Thu, May 11, 2000 at 01:22:38PM +0200, Mark Lastdrager wrote:
> Because of this system it is very hard to implement name-based virtual
> hosting, all accounting is done on one IP adress then and we have to
> rethink our accounting scheme of virthosts (which takes time, costs money
> etc. etc.)

Exactly. You basically have to either

a) analyze webserver logs (very inaccurate, CPU-intensive)

b) write your own accounting software basing on sniffing, analyzing
   packet payloads for HTTP 1.1 header information and tracing TCP
   streams. This can also lead to a restructuring of you networks to
   be able to sniff.

AFAIK Strato (hosting >500.000 .de domains) does something like b)
'cause they can't afford spending CPU time on their hosting server to
do any accounting... (but this is hearsay).

Best regards,

Daniel Roesen
Entire Systems NOC

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