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Re: iptables script review



On Tuesday, 26.07.2005 at 22:38 +1200, Adam Bogacki wrote:

> >>>>>INET_IP="192.168.0.1"
> >>>>>INET_IFACE="eth0"
> >>>>>INET_BROADCAST="192.168.0.100"
> >>>>>
> >>>>>LAN_IP="192.168.0.2"
> >>>>>LAN_IP_RANGE="192.168.0.0/16"
> >>>>>LAN_IFACE="eth1"
> >>>
> >>>Well, that looks wrong for a start. The IP addresses and ranges on your
> >>>INET interface and LAN interface overlap, which is Bad and Wrong. The
> >>>broadcast address is also spurious.
> >>>
> >>>What IP addresses and net-masks are actually allocated to eth0 and eth1?
> >>>Perhaps show us the output of 'ifconfig'?
> >>
> >>Output of 'ifconfig' below.
> >
> >Adam, please reply on list, do not CC people on list messages.
> >
> >>Tux:~# ifconfig
> >>eth0 Link encap:Ethernet HWaddr 00:A0:CC:D9:E2:48
> >> inet addr:203.79.110.81 Bcast:203.79.110.255
> >>Mask:255.255.255.0
> >
> >
> >Well - there you are. Above is your eth0 IP address. You should
> >correct your script to include 203.79.110.81 as your eth0 address and,
> >as seen below, eth1 is 192.168.0.1 ...
> >
> >>[...]
> >>
> >>eth1 Link encap:Ethernet HWaddr 00:A0:CC:D9:C7:6F
> >> inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
> >>[...]
>
> Apologies, I've picked up bad habits from other lists.
> 
> Iptables now allows me to connect to the internet and do debian things
> and I feel a bit more secure.
>  
> Do
> 
> >INET_BROADCAST="192.168.0.100"
> 
> and
> 
> >LAN_IP_RANGE="192.168.0.0/16"
> 
> still make sense ?

No - the INET interface has IP 203.79.110.81 with broadcast
203.79.110.255 according to your own ifconfig; and the LAN range should
probalby be 192.168.0.0/24 rather than 192.168.0.0/16, since it's
netmask is 255.255.255.0 ...

Dave.
-- 
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...
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