User manual

Network Setup
115
The Subnet is the network on which DHCP server is handing out addresses. Free
Addresses displays the number of remaining available IP addresses that can be
distributed. You may need to increase the number of IP addresses to hand out if this
value is 0.
DHCP Proxy
The DHCP proxy allows the SG unit to forward DHCP requests from the LAN to an
external server for resolution. This allows both static and dynamic addresses to be given
out on the LAN just as running a DHCP server would.
To enable this feature, specify the server which is to receive the forwarded requests in
Relay Host. This server must also be configured to know and accept requests from the
SG unit's LAN. Then check Enable DHCP Relay and click Apply.
Web Cache
Note
SG565, SG575, SG635 and SG rack mount appliances only.
Web browsers running on PCs on your LAN can use the SG unit’s proxy-cache server to
reduce Internet access time and bandwidth consumption.