Modifying The Firewall/Router Configuration - 3Com 3CR3MFA-92 Installation Manual

12 C 1: P -
HAPTER RE
Modifying the
Firewall/Router
Configuration
T
INSTALLATION 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.
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
21 FTP for
system
backups
25 SMTP
53 DNS
80 Anti-Virus
Updates
123 NTP
(Network
Time
Protocol)
443 Security
Connection
443 Secure
Admin
514 Syslog
6277 DCC
From
From To Internal
Internet Internet Network
✓ ✓ ✓
✓
✓
✓
✓
✓ ✓
✓
To
Internal
Network Protocol
✓
TCP
✓
TCP
✓
UDP/TCP
TCP
✓
UDP
TCP
TCP
✓
UDP
UDP