Complete security does not exist, cloud or no-cloud. However, there are specific cloud computing security-related and service-related considerations that must be addressed. An interesting question in cloud environments is the necessity of a network perimeter. Whereas servers and virtual machines can be secured tightly with a traditional perimeter, cloud VPNs may need a perimeter firewall in addition to the device and server firewalls which can be provided by the operating system and additional security software. Additionally, a network perimeter in the form of a UTM firewall may be particularly useful for enterprises which have a variety of networked devices that need to be protected. For other environments though, managing the devices, end-user access and central administrative control are critical to ensuring cloud VPN security.
Email your VPN-related questions to firstname.lastname@example.org.
This was first published in November 2011