> FYI : Smoothwall leaves this port open by default.
There's a very good reason for this. If you leave it firewalled and
drop packets destined for the port, SMTP services will often slow down
significantly due to attempted ident lookups. It's much better either
to leave it open and have nothing running on it, or else (better still),
firewall it, but configure your firewall to return an RST so that the
remote end doesn't spend all day trying to open a port which can't be
opened.
Nick
Maintained by the ILUG website team. The aim of Linux.ie is to
support and help commercial and private users of Linux in Ireland. You can
display ILUG news in your own webpages, read backend
information to find out how. Networking services kindly provided by HEAnet, server kindly donated by
Dell. Linux is a trademark of Linus Torvalds,
used with permission. No penguins were harmed in the production or maintenance
of this highly praised website. Looking for the
Indian Linux Users' Group? Try here. If you've read all this and aren't a lawyer: you should be!
