Restoring single-port communication using the CLI

Single-port communication is the default behavior on the Email Security - Server appliance, and requires no configuration. Use the commands in this topic to restore single-port communication if dual-port communication was enabled.

Important
Before you restore single-port communication, make sure CMS is the configured DTI source (see Changing the active setting for a DTI service for details).

To restore single-port communication:

Go to CLI configuration mode:

hostname > enable
hostname # configure terminal

If your appliance has already been added to the Central Management System appliance, type yes to confirm that you want to enter configuration mode:

******************
*** CMS notice ***
******************
    This system is under management of a CMS. Please note that
    the CMS may update this system's configuration, which could
    overwrite changes that you have made locally.

    Enter 'YES' to enter configuration mode anyway: yes

Enable single-port communication:
```
hostname (config) # fenet dti source type CMS address-type cms-singleport
```
Note
You can also use the no fenet dti source type CMS address-type command to enable single-port communication.
Verify the configuration.
```
hostname (config) # show fenet dti configuration
```
The entries in the Active Settings list end with the following text:
```
: singleport) - Managed by CMS
```
Save your changes.
```
hostname (config) # write memory
```

Example

This example enables single-port communication.

hostname (config) # fenet dti source type CMS address-type cms-singleport
hostname (config) # show fenet dti configuration

DTI CLIENT CONFIGURATIONS:

  ACTIVE SETTINGS:
 
   Mode               : online
   Download source    : CMS (DTIUser@10.2.0.0 : singleport) - Managed by CMS
   Upload destination : CMS (DTIUser@10.2.0.0 : singleport) - Managed by CMS
   Mil service        : CMS (DTIUser@10.2.0.0 : singleport) - Managed by CMS
   Faude service      : CMS (DTIUser@10.2.0.0 : singleport) - Managed by CMS
   AVSuite service    : CMS (DTIUser@10.2.0.0 : singleport) - Managed by CMS  
  
  AVAILABLE OPTIONS:
 
  ----------------------------------------------------
  Download   User                  Address
  ----------------------------------------------------
  CDN        DTIUser               cloud.fireeye.com
  CMS        DTIUser               10.2.0.0
  DTI        DTIUser               staticcloud.fireeye.com
  ...