Re: How to block all packets not destined to local IP's ?

["U.Mutlu" <for-gmane@mutluit.com>]

I solved the problem in 2 steps, in that order:
   drop all packets to unwanted dest ip's
   drop all packets from unwanted cc's

If the IP's are consecutive then one can use a the range option of iptables, like this:
   iptables -A INPUT -m iprange --dst-range x.x.x.210-x.x.x.219 -j DROP

Ie.:
   iptables -A INPUT -m iprange --dst-range x.x.x.210-x.x.x.219 -j DROP
   ...
   iptables -A INPUT -m geoip --src-cc CN -j DROP
   ...


U.Mutlu wrote, On 10/18/2012 03:29 AM:
> Subtitle: [xtables geoip] rules not applied to packets for non-configured IP's
>
> Hi,
> from the router link (just 1 link) I'm getting traffic for multiple IP's
> (a quasi multihomed system, actually a host node and multiple virtual systems therein),
> that's correct so, but is there a way to drop all packets to IP's
> that are actually not configured on the local system?
> Is there a better way than writing a drop/reject-rule for each such IP?
>
> And related to this, I think there is a bug in xtables geoip
> because if there is a packet for such a not-configured IP
> then the iptables rules (at least geoip rules) aren't applied to such packets.
> How to fix this?
>
> Confirmation, fixes and workarounds welcome. Thx.