Good for Enterprise 6.0 allows for mobile access to corporate applications behind the firewall, said Doug Brackbill, executive vice president for Good, during an interview at the CTIA conference in Las Vegas. It includes a mobile VPN that runs from the Good server behind the corporate firewall and allows secure mobile access to any TCP/IP based application behind the firewall, he said.

That means enterprises can more easily let users access applications like corporate IM, CRM and sales force applications, he said.

Other mobile VPN products on the market often require proprietary development, demanding time and investment, but the Good VPN works out of the box, he said.

The VPN is designed to work around the sometimes unreliable nature of wireless connections. It preserves the session so if a user goes through a tunnel or loses the wireless connection for another reason, the user doesn't have to log in again.

That's a key feature that might appeal to an IT manager afraid that mobile workers won't use the VPN if it's too cumbersome. "If you're dropping in and out of coverage and have to reconnect, it's really painful," said Sean Ryan, an analyst with IDC. "People tend not to use it if it's so painful."