User`s manual

Content Security Gateway User’s Manual
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Security Gateway to access the mail server. Essentially, the LAN network is accessing the mail server by a
real public IP address, while the mail server serves their request by a NAT address and not a real one.
This odd situation occurs when there are servers in the DMZ network and they are bound to real IP addresses.
To avoid this, set up Host Table so all the LAN network computers will use the Content Security Gateway as a
DNS server, which acts as the DNS proxy.
If you want to use the Host Table function of the device, the end user’s main DNS server IP address
should be the same IP Address as the device.
Click on System in the menu bar, then click on Host Table below the Configure menu. The Host Table
window will appear.
Below is the information needed for setting up the Host Table:
• Host Name: The domain name of the server
• Virtual IP Address: The virtual IP address respective to Host Table
• Configure: modify or remove each Host Table policy
Adding a new Host Table
Step 1: Click on the New Entry button and the Add New Host Table window will appear.
Step 2: Fill in the appropriate settings for the domain name and virtual IP address.
Step 3: Click OK to save the policy or Cancel to cancel.
Modifying a Host Table
Step 1: In the Host Table window, find the policy to be modified and click the corresponding Modify option
in the Configure field.
Step 2: Make the necessary changes needed.
Step 3: Click OK to save changes or click on Cancel to cancel modifications.