what do you mean?

if you're asking which should be blocked and which should be passed, then 
that's
unfortunately simpler to say than to tell:)
* for ICMP requests/responses such as echo, echo reply, ...
the decision depends on the configuration...
* for ICMP errors, you might need to have a stateful mechanism, so as to
determine whether it's a real error or a faked packet.
some sites wanna traceroute, others say no traceroute for dumb users,
...

in C++? it's the first time I see C++ used in such things (I have no opinion
on that though. everybody has a preferred language).
For which OS do you intend it?


cheers,
mouss

At 15:26 25/01/01 +0300, Pinar Sarisaray wrote:
>Hello All,
>I'm trying to code a packet filter with C++.most of the TCP and UDP
>protocols are handled but I don't know which ICMP type  should be
>filtered.Do you have a idea?
>Thank you very much...
>
>
>
>Share what you know, learn what you don't know
>**********************************
>PINAR SARISARAY
>Research Assistant B.S.C.E
>Karadeniz Technical University
>Department of Computer Engineering
>**********************************
>
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