User guide

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Chapter 4 - ProxyServer Software
MTPSR2-201
DHCP
The DHCP (Dynamic Host Configuration Protocol) group allows IP addresses to be assigned by a
DHCP Server. In such cases, a PPP client connected to WAN port 2 will be on the same IP network
as the LAN port. Because the DHCP Server automatically assigns an IP Address for a PPP client
coming up on a “Client Only” WAN port, this feature can save IP addresses that otherwise would
have been taken up by the WAN port.
To enable DHCP, you must check the Client box and enter the IP address of the external DHCP
Server (e.g., Microsoft’s DHCP feature) in the Server Address field. The Server Address is assigned
by your systems administrator.
DNS
The Domain Name Server (DNS) group is used to resolve Fully Qualified Domain Names (FQDN) to
an IP address. This field can either be filled in or left blank. If it is left blank, your ISP will assign a
DNS address. This DNS address will also be handed off to any client obtaining an IP address from
the ProxyServer’s DHCP Server.
The Primary Server field defines the IP address of the first host that the ProxyServer will attempt to
connect to upon a user request. If this server is unavailable, the ProxyServer will attempt a
connection with the Secondary Server (if defined). The Secondary Server field defines the IP
address of the DNS server used whenever the primary server is unavailable.
Static Routes
The Static Routes feature enables a remote client PC to access the Internet over a predefined
(static) route. Static routing is normally used when part of an internetwork can be reached only
through one specific path. In this application, static routes are manually configured routes that specify
the transmission path that a data packet must follow based on the destination address of the packet.
In the example below, a data packet sent from the remote client PC (at the left end of the illustration)
through the ProxyServer to the Internet must have IP address 200.1.1.0 and Gateway Address
192.168.2.1 (entered as the Static Route configuration). This determines the return path that the data
packet will follow back to the remote client PC. See Figure 4-1.