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 :: Mailing Lists

[ILUG] ipchains vs. iptables

[ILUG] ipchains vs. iptables

Padraig Brady padraig at antefacto.com
Fri May 31 12:03:43 IST 2002


Well the state of anything is dependent on
what has already happened. So in this context
it means that iptables decides what to do with a
packet by looking at the packet (like ipchains)
but also by looking at (the consequence of) all
previous packets associated with the same "connection".

For e.g. you can block ping responses that have
no corresponding ping request.

More details here:
http://www.cs.princeton.edu/~jns/security/iptables/iptables_conntrack.html

Padraig.

hrishy wrote:
> what is meant by state of a connection ? 
> 
> 
> --- Padraig Brady <padraig at antefacto.com> wrote: >
> Barry O'Donovan wrote:
> 
>>>Is there a significant difference? Which is
>>
>>better?
>>
>>The fundamental difference is that iptables tracks
>>the state of connections which gives you more
>>control, whereas ipchains just looks at each packet
>>individually.
>>
>>Padraig.






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