what is the '-m' flag?

what is the '-m' flag?

[Leonardo Carneiro]

what the '-m' flag does in iptables? i'd search google and read the 
manual, but did not found anything.

a old script running in a firewall of my network have some rules like these:
iptables -A PREROUTING -p udp -m udp -d $inet_ip -i eth0 --dport 8282 -j 
DNAT --to-destination 192.168.1.102

tks in
-- 

*Leonardo de Souza Carneiro*
*Veltrac - Tecnologia em Logística.*
lscarneiro@veltrac.com.br <mailto:lscarneiro@veltrac.com.br>
http://www.veltrac.com.br <http://www.veltrac.com.br/>
/Fone Com.: (43)2105-5601/
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Re: what is the '-m' flag?

[Ivan Petrushev]

man iptables v.1.3.7
MATCH EXTENSIONS
       iptables can use  extended  packet  matching  modules.   These  are
       loaded in two ways: implicitly, when -p or --protocol is specified,
       or with the -m or --match options, followed by the matching  module
       name; after these, various extra command line options become avail-
       able, depending on the specific module.

Re: what is the '-m' flag?

[Christoph Paasch]

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Look in the manpage of iptables.

-m loads the iptables extension.

On Tue June 2 2009 wrote Leonardo Carneiro:
> what the '-m' flag does in iptables? i'd search google and read the
> manual, but did not found anything.
>
> a old script running in a firewall of my network have some rules like
> these: iptables -A PREROUTING -p udp -m udp -d $inet_ip -i eth0 --dport
> 8282 -j DNAT --to-destination 192.168.1.102
>
> tks in

--
Christoph Paasch

www.rollerbulls.be
--

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Re: what is the '-m' flag?

[Leonardo Carneiro]

in the manual version in the server the flag was not present. a more 
updated version has the description, but was not together with the other 
flags. sorry for the mistake, anyway.

Billy Crook escreveu:
> On Tue, Jun 2, 2009 at 15:23, Leonardo Carneiro
> <lscarneiro@veltrac.com.br> wrote:
>   
>> what the '-m' flag does in iptables? i'd search google and read the manual,
>>     
>
> Evidently not.
>
> man iptables
> [/] then [Spacebar] then [-] then [m] then [Enter]
>
>   

-- 

*Leonardo de Souza Carneiro*
*Veltrac - Tecnologia em Logística.*
lscarneiro@veltrac.com.br <mailto:lscarneiro@veltrac.com.br>
http://www.veltrac.com.br <http://www.veltrac.com.br/>
/Fone Com.: (43)2105-5601/
/Av. Higienópolis 1601 Ed. Eurocenter Sl. 803/
/Londrina- PR/
/Cep: 86015-010/