Re: [Fedora] Re: Logging denied packets (iptables)

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Ashley M. Kirchner wrote:
> Mike Wohlgemuth wrote:
>> Here's what I do:
>>
>> -N LOGDROP
>> -A LOGDROP -j LOG --log-prefix "$IPTABLES drop:"
>> -A LOGDROP -j DROP
>>
>> Then you can add lines for the things you want logged like this:
>>
>> -A INPUT -s www.xxx.yyy.zzz/aa -j LOGDROP
>    Now that works great (I removed the $ from it.)  The only, small,
> issue is that I'd like some kind of identifier when it logs, instead
> of just saying 'IPTABLES drop:'.  Is there a way of saying something
> like, 'all these IP ranges belong to .ru domains' and then when it
> logs the packet, to have the prefix say 'IPTABLES drop .ru: '  And
> do the same for other ranges that are defined (at the moment they
> have .ru, .hk, .cn, etc., etc. blocked.)
>
>    Or do I have to create individual chains for each one, and change
> the prefix on each?
>

It is usually easier to allow from a few and DROP everyone else.  You
should not be say excluding country domains for any reason.
The more complex you make the rules, the more chance for errors.
Besides, the IP addresses are not always static.  As new IP service
providers are added you will have to update your table like crazy....

Just my opinion.

- -James
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