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On Mon, 19 Aug 2002, Lion Lote F. wrote:

> Para que serve o proxy arp.
> Come se usa.
> Onde influ�ncia.
> A variavel /proc/sys/net/ipv4/conf/all/proxy_arp deve ficar 0 ou 1 e em
> servidor de VPN com varias subnets conectadas.
> E em rotedores NAT para a Internet deve ficar 0 ou 1.
> O proxy arp facilita o roteamento entre a v�rias rede ou n�o tem nada haver.
> A op��o proxyarp nas op��es do PPPD depende de setar para 1 a variavel acima
> descrita ou n�o tem nada haver.
>
> Como podem ver, muitas d�vidas, se alguem puder ajudar eu agrade�o
>
> lion
>
>
>
>

20 segundos no google - n�o sei por que est� t�o demorado - deram:

What's proxy_arp? Quickly proxy arp help you when you want a router answer
to an ARP request if the destination address is in another interface of
the linux router...

Example:

192.168.1.1 ---- 192.168.1.2 Linux router 192.168.2.2 ----192.168.2.1

To get this example working you should:

Without proxy-arp

   1. In 192.168.1.1 host to set 192.168.1.2 as gateway
   2. In 192.168.2.1 host to set 192.168.2.2 as gateway
   3. pinging with success from any edge.

With proxy-arp

   1. In 192.168.1.1 host to set 192.168.1.2 as gateway
   2. do not set gateway for 192.168.2.1 host but enable proxy_arp for
right interface of the router.
   3. pinging with success from any edge

Proxy-arp in 2. case let the linux router answer when you ping from
192.168.2.1 host, saying that it has the 192.168.1.1 host so it can answer
for it. After, when the source start sending ICMP packet, Linux router
knows that it have to redirect it to the real host 192.168.1.1

In Wireless network proxy arp can help you if you have many Linux boxes
that acts as IP Forwarders and you wouldn't set to all hosts a number of
static route.

You also can experiment Linux bridging in Wireless network:

   1. install a recent stable kernel
   2. download good bridge utils at http link or ftp link

Bridging should be more simple to manage.


http://www.tldp.org/HOWTO/Wireless-HOWTO-10.html



- ---

end

I wish you have a good day,
                   and a nice work donne with GNU-Linux.

Tenha um bom dia e um �timo trabalho com linux
Fui!

====================<<<<<< * >>>>>>>====================
===========  Renato Q. Salles UIN 143517540  ===========
===========  Linux Registered User n� 217696 ===========
====================<<<<<< * >>>>>>>====================
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