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Chapter 10 Virtual Server
Virtual Server
The real IP address provided from ISP is always not enough for all the users
when the system manager applies the network connection from ISP. Generally
speaking, in order to allocate enough IP addresses for all computers, an
enterprise assigns each computer a private IP address, and converts it into a
real IP address through SMC BR21VPN’s NAT (Network Address Translation)
function. If a server that provides service to WAN network is located in LAN
networks, external users cannot directly connect to the server by using the
server’s private IP address.
The SMC BR21VPN’s Virtual Server function can solve this problem. A Virtual
Server has set the real IP address of the SMC BR21VPN’s WAN network
interface to be the Virtual Server IP. Through the Virtual Server function, the
SMC BR21VPN translates the Virtual Server’s IP address into the private IP
address in the LAN network.
Virtual Server owns another feature know as one-to-many mapping. This is
when one real server IP address on the WAN interface can be mapped into four
LAN network servers provide the same service private IP addresses. This option
is useful for Load Balancing, which causes the Virtual Server to distribute data
packets to each private IP addresses (which are the real servers) by session.
Therefore, it can reduce the loading of a single server and lower the crash risk.
And can improve the work efficiency.
Summary of Contents for Barricade SMCBR21VPN
Page 1: ...Barricade Dual WAN Port Load Balancing VPN Router SMCBR21VPN ...
Page 32: ...31 Figure2 4 Reset Factory Settings ...
Page 60: ...59 Figure3 7 Dynamic IP Address Connection Figure3 8 Complete Dynamic IP Connection Setting ...
Page 76: ...75 it takes only one control policy to achieve the same effect as the 50 control policies ...
Page 90: ...89 Figure7 2 the Flow After Using QoS Max Bandwidth 400Kbps Guaranteed Bandwidth 200Kbps ...
Page 201: ...200 Figure16 4 NetBIOS Alert Notification to Administrator s PC ...
Page 202: ...201 Figure16 5 E mail Virus Alert ...
Page 227: ...226 Figure19 1 Outbound Source IP Statistics Report ...
Page 229: ...228 Figure19 2 Outbound Destination IP Statistics Report ...
Page 231: ...230 Accounting Report ...
Page 234: ...233 Figure19 5 Inbound Top Users Statistics Report ...
Page 236: ...235 Figure19 6 Inbound Destination IP Statistics Report ...
Page 247: ...246 Figure21 1 Interface Status ...
Page 251: ...SMCBR21VPN 20 Mason Irvine CA 92618 Phn 949 679 8000 www smc com ...