""Hubert Pun"" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hi
>
> what does the "access-list 100 permit ip host 0.0.0.0 host 0.0.0.0"
> applied to an interface do?
I can't think that it would do anything useful. The "host" keyword means
"match all bits", so the clause would only be applied to packets with a
source address *and* destination address of *exactly* 0.0.0.0, not to all
packets. And even if, for some ridiculous/impossible reason, you had
assigned a host the address 0.0.0.0, why would it be sending itself IP
packets, and why would those packets ever leave its NIC and hit the router?
My guess: Somebody saw that "host" is the same as "mask 0.0.0.0" and forgot
that that means *wildcard* mask, not *subnet* mask.
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