From the client side you have two options. The first is to connect to the gateway on its new IP, download and run installer from the gateway. I’ve had mixed results with this method on Mac OS X 10.8.2. I’ve had the best results (non-failed installations) if I’ve freshly rebooted my laptop and have erased all previously downloaded mac_phat client files.
The second option is to update the existing client configurations. On Windows clients – you can update the windows naclient IPs via the Registry Editor by editing the GatewayList registry key. Location can slightly change depending on your OS installation.
HKLM\SOFTWARE\VMware, Inc.\SSL VPN-Plus Client\Connection#
HKLM\SOFTWARE\Wow6432Node\VMware,Inc.\SSL VPN-Plus Client\Connection #
As a bonus you can give your name your connections to suit your needs by modifying the ConnectionAlias key (this will change the connection name in the naclient Network dropdown).
If you need to make the update to a Mac OS X, open Terminal, change your directory to /opt/sslvpn-plus/naclient/
The format is
ClientAlias GatewayIP 256
Just make the update to your GatewayIP (and ClientAlias if desired). Make sure the 256 doesn’t get erased. Write & Quit, then you are set.