
12CHAPTER 1: PRE-INSTALLATION TASKS
■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
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
|
|
| From | To |
|
| From | To | Internal | Internal |
|
Port | Description Internet | Internet | Network | Network | Protocol |
|
|
|
|
|
|
21 | FTP for |
|
| ✓ | TCP |
| system |
|
|
|
|
| backups |
|
|
|
|
25 | SMTP | ✓ | ✓ | ✓ | ✓ | TCP |
53 | DNS |
| ✓ |
| ✓ | UDP/TCP |
80 |
| ✓ |
|
| TCP | |
| Updates |
|
|
|
|
|
123 | NTP |
| ✓ |
| ✓ | UDP |
| (Network |
|
|
|
|
|
| Time |
|
|
|
|
|
| Protocol) |
|
|
|
|
|
443 | Security |
| ✓ |
|
| TCP |
| Connection |
|
|
|
|
|
443 | Secure | ✓ |
| ✓ |
| TCP |
| Admin |
|
|
|
|
|
514 | Syslog |
|
|
| ✓ | UDP |
6277 | DCC |
| ✓ |
|
| UDP |
|
|
|
|
|
|
|