This topic covers security and relaying issues connected with FTGate’s SMTP Service. The IP addresses allow/disallow options in FTGate.
By defining the IP addresses (or range) in the "The following addresses are from local domains" field, the usual checks to authenticate the users would be missed, as FTGate would see the defined IP addresses as local or friendly.
By entering IP addresses in the "Permit connections ONLY from the following addresses" you will effectively 'Lockdown' the server to all but those IP addresses.
Entering IP addresses in the "Refuse connections from the following addresses" would force the connection to be refused from that IP address.
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. |
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.