> On Tue, 6 Feb 2001, milunovic wrote:
>
> > Is there anyway to deny echo request on FreeBSD (except ipfw add deny
> > icmp from any to any) ?
> > On Linux It was simple,just echo 1>/proc/.../icmp_echo_request
>
> If you just want to block echo_requests and don't want to
> block any other ICMP why not use ipfw?
>
> ipfw add 1000 deny icmp from any to any in via xl0 icmptypes 8
>
> This will still allow other icmp to work...so why not use it?
Yes, indeed. Just blocking all of ICMP will cause things like Path MTU
discovery to fail.
louie
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