Denied Ports, protocols and services

Any services not directly related to the operation and maintenance of the Internet mail service will be disabled.

1.

All TCP/UDP ports not mentioned above will be denied access through the firewall. The exceptions are: DNS (port 53), ICMP, SMTP (port 25, 1024), IMAP (port 143)

2.

Packet forwarding is not enabled on the firewall. Only traffic directly to or from rhmail will be allowed

3.

IMAP services will only be allowed access from the local area network. IMAP access for the Internet will be denied by the firewall.