Title: SMTP access list
Hi, all.
Just to verify my understanding of extended access-lists: this continues to parse the entries even
after a match has already been found, so if the first few lines have a "permit" and later down the last few lines it encounters a "deny", wha
Title: SMTP access list
I think you need to have the 3rd line because if you do not,
then all other traffic will be denied.
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Title: SMTP access list
Elmer,
The router applies the first match and neglects the
remaining lines.
i.e. in your example, only any traffic from the 3
mentioned sources & carrying smtp will be allowed. Note that the last 2
lines are unnecessary, as the implicit deny any will apply in
No, once the router finds a match, it quits examining the access-list and
either permits or denies the packet. Even if there are lines later in the
list that would also be a match the router stops with the first match it
finds.
>Hi, all.
>Just to verify my understanding of extended access-l
the algorithm is designed to exit the moment it finds a match. so, as
soon as there is a match, the remaining lines of the access-list are
never looked at.
> "Deloso, Elmer G." wrote:
>
> Hi, all.
> Just to verify my understanding of extended access-lists: this
> continues to parse the entries
Title: SMTP access list
Elmer,
The router applies the first match and neglects the
remaining lines.
i.e. in your example, only any traffic from the 3
mentioned sources & carrying smtp will be allowed. Note that the last 2
lines are unnecessary, as the implicit deny any will apply in
Title: SMTP access list
Hi
Nope, as soon as a match in the list is made, it is
processed, and no longer considered by the ACL. So in your example a packet with
a source address of 193.128.233.177 on TCP port 25 it would forwarded/routed to
the IP/forwarding interface.
HTH-- John Hardman
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