This topic covers security and relaying issues connected with FTGate’s POP3 Service. The IP addresses allow/disallow options in FTGate.
By defining the IP addresses in the 'The following addresses are from local domains' field, this allows access from any of the defined addresses, as FTGate would see the defined IP addresses as Local or Friendly.
Entering IP addresses in the 'Refuse connections from the following addresses' would force the connection to be refused from that IP address. These are powerful security measures, but use them carefully as they can also shut out legitimate users...
Properties |
Description |
Only allow access to roaming users |
When this flag is checked, only users connecting to mailboxes with the Roaming User flag checked can connect to this server.
Note: If you use roaming users you will need at least two POP3 servers: one general one, and one for the roaming users. The general server just needs the LAN address range in the Local Addresses list. The Roaming server needs the IP ranges of the ISPs the users use to connect to the internet. |
The following are local addresses |
IP addresses added to this section are considered ‘Friendly’ and are allowed to connect. |
Refuse connections from the following addresses |
This will block connections from the defined IP address or range of numbers. |
For more information on the fields on this page and how they interact with each other please see the Addresses and Masks topic in the Security chapter of this document.
To add an IP address or range to any of the fields described below follow these steps:
1. |
Add the IP address (e.g. 192.168.0.0) and the Subnet mask (255.255.0.0) to the required section |
2. |
Press the 'Add IP address' button. |
To delete any of the entries follow these steps:
1. |
Select the entry from the list |
2. |
Press the 'Delete IP address' button. |