Bitte keine heiße Asche einwerfen

Es fasziniert mich extrem, dass ich Dank des ipcalc perl scripts Mails von Leuten mit den buntesten Top-Level Domains bekomme. Heute mal aus Indien. Aber heute fällt mir einfach schöne keine Antwort ein. Was soll man auf so eine Frage antworten?

From: “xxx” <xxx.yyy@zzz.in>
To: ipcalc-200801@jodies.de
Subject: ip addessing
Date: Sat, 15 Mar 2008 11:15:38 +0530

How I can counfiger an ip addressing

From: “XXX”
To: ipcalc-200502@jodies.de
Subject: hello

Hello,

I was wondering if you could supply the source code to the ipcalc binary some where please?

Thanks

Es ist einfach zu komisch. Nach dem Quelltext dieses Perl Skripts werde ich öfters gefragt als man glauben sollte.

(Ein Skript ist ein Programm, das erst beim Start von einem Interpreter verarbeitet wird und daher selbst der Quelltext ist. Daher ist die Frage nach dem Quelltext zu ipcalc sinnlos.)

Hier ist der “Quelltext”: http://jodies.de/ipcalc-archive/ipcalc-0.41/ipcalc

Von dieser Anfrage sollte sich so mancher E-Mail Benutzer mal eine Scheibe abschneiden. Sehr effizient, reduziert auf das absolute Mindestmass. Ein Betreff enthält meistens keine wichtigen Informationen und sollte daher leer bleiben. Interpunktion ist überflüssig, sie ergibt sich ohnehin schon aus dem Kontext.

From: “xxx” <xxxx @xxxxxtechnologies.com>
To: <ipcalc -200502@jodies.de>
Subject:
Date: Tue, 13 Mar 2007 15:52:58 +0530
X-Mailer: Microsoft Office Outlook, Build 11.0.5510

How to subnetting

Ich antwortete darauf:

From: Krischan Jodies <krischan@jodies.de>
To: xxx” <xxxx @xxxxxtechnologies.com>
Subject:

> How to subnetting

Resize netmask

Frage:

Please help me by telling me how I can get this software that I desire downloaded to my computer. I tried 4-5 times and tried I see the bars in a graph looking like it’s downloading, but the bars in the graph never move. I am trying to get Cisco Certified and this would be the ideal tool I will need in order to full fill my goal in securing my Cisco Certification. I am running Windows 2000 and tried downloading the software under several of your sections, one being the windows pull down from the menus. Thank you I hope to hear from you soon and can get this much needed software loaded onto my computer. Thank you so much for your offering this software to me.

Antwort:

There are many possibilities. What I can do is to confirm, that the software can be downloaded. It is stored on the same webserver from where you successfully got the webpages. If you can load the webpage, you also can load the rest. Are you behind a firewall, that blocks non-html?

Tja, liebe amerikanische Freunde, das fragt ein Mitarbeiter eines sehr grossen Internetproviders, der morgen vielleicht ihren Router konfiguriert. Guten Abend.

From: Krischan Jodies
To: deleted

On Mon, May 29, 2006 at 01:06:04PM +0200, wrote:
> Hi,
>
> I have a problem and I hope you would help me.
> Is this address a host or a network because I asked many
> people and most of them told me that it is a Host address.
> I still find it hard to believe this.
>
> Here is this address : 172.33.3.255 255.255.254.0
>
> please show me how it is calculated.

Address:   172.33.3.255          10101100.00100001.0000001 1.11111111
Netmask:   255.255.254.0 = 23    11111111.11111111.1111111 0.00000000
Wildcard:  0.0.1.255             00000000.00000000.0000000 1.11111111
=>
Network:   172.33.2.0/23         10101100.00100001.0000001 0.00000000 (Class B)
Broadcast: 172.33.3.255          10101100.00100001.0000001 1.11111111
HostMin:   172.33.2.1            10101100.00100001.0000001 0.00000001
HostMax:   172.33.3.254          10101100.00100001.0000001 1.11111110
Hosts/Net: 510

You need to know, that the network mask splits the bits into a network and a
host part. The rules are: All bits in the host part set: broadcast address. No
bits in the host part set: network address. All others are hosts.

The address in question clearly is a broadcast address. So none of the people you asked were right

You could discuss, that some operating systems define broadcast as the address with all host bits set to zero and vice versa for the network address.

Cheers,

Krischan