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From: "Gáspár Lajos" <swifty@freemail.hu>
To: "Mihamina Rakotomandimby (R12y)" <mihamina@lab.vectoris.fr>
Cc: netfilter@vger.kernel.org
Subject: Re: mask 10 -> 29
Date: Wed, 15 Apr 2009 18:37:51 +0200	[thread overview]
Message-ID: <49E60D5F.9070806@freemail.hu> (raw)
In-Reply-To: <49E6044F.5070305@lab.vectoris.fr>

Hi,

Mihamina Rakotomandimby (R12y) írta:
> Hi,
> I have this kind of shell script in order to set something on a bunch 
> of IP addresses:
>
> for ACCEPTED_MACHINE in \
>     192.168.0.10 \
...
>    192.168.0.29
> do
> $IPTABLES [...]
> done
>
>
> How could I use a mask such as 192.168.0.0/NN to exactly match the list?
> Thank you.
>
Use ipcalc!

The closest subnet is:

ipcalc 192.168.0.10/27
Address:   192.168.0.10         11000000.10101000.00000000.000 01010
Netmask:   255.255.255.224 = 27 11111111.11111111.11111111.111 00000
Wildcard:  0.0.0.31             00000000.00000000.00000000.000 11111
=>
Network:   192.168.0.0/27       11000000.10101000.00000000.000 00000
HostMin:   192.168.0.1          11000000.10101000.00000000.000 00001
HostMax:   192.168.0.30         11000000.10101000.00000000.000 11110
Broadcast: 192.168.0.31         11000000.10101000.00000000.000 11111
Hosts/Net: 30                    Class C, Private Internet

Check HosMin and HostMax!

Swifty



  reply	other threads:[~2009-04-15 16:37 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-15 15:59 mask 10 -> 29 Mihamina Rakotomandimby (R12y)
2009-04-15 16:37 ` Gáspár Lajos [this message]
2009-04-15 17:06   ` Nikolay S. Rybaloff
2009-04-15 17:22 ` Martin Millnert

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