3. LAN virtualization in firewalls
The VLAN allows our host to connect the servers of its various customers to the same switch, without them seeing each other. However, these servers are protected from the Internet by a firewall, so this firewall must also be able to partition these different local networks.
In other words, the firewall must integrate the notion of VLANs.
Let's imagine the following architecture (illustrated in figure 4 ):
Our hosting provider has Internet access and a pool of public IP addresses. It uses one of these public addresses for each of its customers;
each web server VLAN has its own private IP addressing plan;
...
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LAN virtualization in firewalls
Virtualization of local networks in hypervisors
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Bibliography
- (1) - ZEC (M.) - Network stack virtualization for FreeBSD 7.0. - University of Zagreb http://www.bsdcan.org/2007/schedule/attachments/14-network_virtualization_zec.pdf
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