Re: Re: [gentoo-admin] As can I disable arp reply

[geaaru]

Maybe there is a problem with xen: 

                                 Code:
                                    
                       testing_xen ~ # mii-tool 
         SIOCGMIIPHY on 'eth0' failed: Operation not supported 
          eth1: negotiated 100baseTx-FD flow-control, link ok 
                     testing_xen ~ # ethtool eth0 
                          Settings for eth0: 
                           No data available 
                                    

With mii-tool I can't read eth0, while is unload module of eth0 and the
reload module e1000 there is a new interface eth2 that mii-tool see
correctly. While eth0 had always same error message. I don't know! :?:

On another abnormal of this system is that if I see traffic with
ethereal from a client see arp request, while from ethereal on server I
can't see arp request!

> geaaru wrote:
>
> >Thanks for your replies.
> >I have a problem with ethernet interface:
> >On eth0 interface I use freeradius and a pppoe server and eth0 haven't
> >ip addres.
> >eth0    Link encap:Ethernet  HWaddr 00:0x:xx:xx:xx:xx
> >          inet6 addr: xxxx::xxx:xxxx:xxxx:xxxx/64 Scope:Link
> >          UP BROADCAST RUNNING NOARP MULTICAST  MTU:1500  Metric:1
> >          RX packets:4136 errors:0 dropped:0 overruns:0 frame:0
> >          TX packets:3808 errors:0 dropped:0 overruns:0 carrier:0
> >          collisions:0 txqueuelen:0
> >          RX bytes:388327 (379.2 Kb)  TX bytes:956494 (934.0 Kb)
> >
> >However with ethereal I see that this interface send a arp-request like
> >this
> >Who has 0.0.0.0? Gratiutous ARP.
> >
> >As can I disable these arp request.
> >PRE: I'm under XEN SO but eth0 is on dom-0 and MAC of request is eth0
> >not eth0 on dom-2. kernel 2.6.12.5-r1 and eth0 is
> >eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
> >
> >I try different solutions:
> >1) With ebtables:
> >$EBTABLES -P INPUT DROP
> >$EBTABLES -P OUTPUT DROP
> >$EBTABLES -P FORWARD DROP
> >for i in $OTHER_IFACE
> >        do
> >        echo -n "Enable $i interface..."
> >        $EBTABLES -A INPUT -i $i -p arp -j ACCEPT
> >        $EBTABLES -A INPUT -i $i -p ipv4 -j ACCEPT
> >        $EBTABLES -A OUTPUT -o $i -p arp -j ACCEPT
> >        $EBTABLES -A OUTPUT -o $i -p ipv4 -j ACCEPT
> >        $EBTABLES -A FORWARD -o $i -p ipv4 -j ACCEPT
> >        $EBTABLES -A FORWARD -o $i -p arp -j ACCEPT
> >        $EBTABLES -t nat -A POSTROUTING -o $i -p arp -j ACCEPT
> >        $EBTABLES -t nat -A POSTROUTING -o $i -p ipv4 -j ACCEPT
> >        $EBTABLES -t nat -A OUTPUT -o $i -p arp -j ACCEPT
> >        $EBTABLES -t nat -A OUTPUT -o $i -p ipv4 -j ACCEPT
> >        $EBTABLES -t nat -A PREROUTING -i $i -p arp -j ACCEPT
> >        $EBTABLES -t nat -A PREROUTING -i $i -p ipv4 -j ACCEPT
> >        echo "done."
> >        done;
> >
> ># Rules for adsl clients interface
> >$EBTABLES -A INPUT -i eth0 -p ipv4 -j ACCEPT
> >$EBTABLES -A OUTPUT -o eth0 -p ipv4 -j ACCEPT
> >$EBTABLES -A FORWARD -o eth0 -p ipv4 -j ACCEPT
> >$EBTABLES -t nat -A PREROUTING -i eth0 -p ipv4 -j ACCEPT
> >$EBTABLES -t nat -A POSTROUTING -o eth0 -p ipv4 -j ACCEPT
> >$EBTABLES -t nat -A OUTPUT -o eth0 -p ipv4 -j ACCEPT
> >
> >Also with these rules there are are request to 0.0.0.0. Also if I have
> >disabled all packet on eth0!!!!!!
> >2) ifconfig eth0 0.0.0.0 -arp
> >Nothings.
> >3) ip link set eth0 arp off
> >Nothings.
> >
> >What can I do?
> >
> >Thanks for your help.
> >
> >
> >
> try using arptables package or take a look on /etc/sysctl.conf for arp
> stuff like:
> net.ipv4.conf.eth0.arp_ignore =
> net.ipv4.conf.eth0.arp_announce =
> net.ipv4.conf.eth0.arp_filter =
>
> it might help you, cheers
>

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