[arin-ppml] An article of interest to the community....
mysidia at gmail.com
Tue Aug 30 21:41:30 EDT 2011
On Tue, Aug 30, 2011 at 8:31 PM, Mike Burns <mike at nationwideinc.com> wrote:
> Hi Paul,
> 80 is not the only port.
> Remember port 21's problem with port 20?
> That screwed up Nat right from the getgo, but how long did it take for
> passive ftp to appear?
Bad example. Years; nearly 20 years after the introduction of the
and packet filters preceded it by years as well, it was solving a
problem that had been around
for quite a while.
RFC 1579 "Firewall friendly" passive mode FTP was introduced to cope
with inbound packet filters.
And... RFC1918 did not exist in 1994, there was no such thing as a
private IP address.
NAT had nothing to do with this.
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