3Com 3CR3MFA-92, Installation Manual

Page: 12 / 176

12 C
HAPTER
1: P
RE
-
INSTALLATION
T
ASKS
■
Administrator Email Address — Enter an email address for the
administrator of this 3Com Email Firewall. Notifications will go to this
email address.
■
Proxy — Enter an optional proxy server if you use one on your
network. If you use a proxy server, this is required for Anti-Virus,
Anti-Spam, and Licensing updates to work properly. Enter the address
in the format https://hostname:port, such as:
https://proxy.example.com:8080
■
Proxy Username and Password — Enter a username and password for
the proxy server.
Modifying the
Firewall/Router
Configuration
For the 3Com Email Firewall to function properly, various networking
ports or proxies must be configured on your firewall or router.
The following table describes the list of ports required:
Table 3 Firewall/Router Port Configuration
Port Description
From
Internet
To
Internet
From
Internal
Network
To
Internal
Network Protocol
21 FTP for
system
backups
✓ TCP
25 SMTP
✓ ✓ ✓ ✓
TCP
53 DNS ✓ ✓ UDP/TCP
80 Anti-Virus
Updates
✓
TCP
123 NTP
(Network
Time
Protocol)
✓ ✓
UDP
443 Security
Connection
✓ TCP
443 Secure
Admin
✓ ✓
TCP
514 Syslog
✓
UDP
6277 DCC ✓ UDP