On Thu, Dec 15, 2005 at 12:35:09PM +0000, kevin bailey wrote: > the service: > 443/tcp open https > is used to protect the webmail service. it is meant to stop the email > passwords from being sniffed. If you're concerned about passwords being sniffed, you better shut off pop3 and imap, too (unless you configure IMAP such that plaintext passwords will never be prompted for, which should be possible according to section 6.2.2 of RFC 3501). In the case of pop3, it is not possible to configure secure authentication mechanisms, and you should switch to the SSL-tunnelled pop3s if you really need POP support. > what is > 1720/tcp filtered H.323/Q.931 > ? > > and how do i turn it off if it is uneccessary. It may be nothing. The fact that it showed up as filterd in the nmap output indicates that nmap didn't received a TCP RST packet back when it tried to contact that port. That may mean you have iptables configured to DROP packets to that port. noah
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