Re: blocking icmp...
On Sun, 25 May 2003 18:51:44 +0100
Colin Watson <cjwatson@debian.org> wrote:
> > How would declining to answer pings "break the TCP/IP standard"? That's
> > like saying if you don't answer the telephone you're breaking the
> > telephone standard.
>
> Obviously it only counts if you're sending or receiving other packets.
> RFC 1122, a.k.a. STD 3, "Requirements for Internet Hosts --
> Communication Layers":
>
> 3.2.2.6 Echo Request/Reply: RFC-792
>
> Every host MUST implement an ICMP Echo server function that
> receives Echo Requests and sends corresponding Echo Replies.
Thank you.
Actually, that was my bad for not reading a little more closely. I saw
"icmp" and thought "ping". :(
Obviously blocking all ICMP is a lot different from just dropping pings.
Kevin
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