Oce im2330 Network Administration Manual

Also see for im2330: Programming Date & Time Quick start guide User guide Operator's manual Specifications

Contents

Oce im2330 Network Administration Manual Manual pdf 31 page image

Setting up DNS and Mail Servers 29Setting up DNS and Mail ServersThis section describes how to set up the DNS server and Mail server for the Internet connection.The figure illustrates a general network environment for Internet connection from a local areanetwork.As shown in the figure above, a local area network usually consists of several segments: oneconnects to the router directly (and is assigned a Global IP address) and others are for clientcomputers.To enable Internet access from the local area network, the router must be assigned a Global IPAddress. In the above figure, the Private IP addresses have been assigned to all devices in thelocal area network, and the router maps between the Private IP addresses and Global IPAddresses using the NAT, Network Address Translation. This gives clients and servers accessto the Internet through the router.Regarding the security, it is preferred to place this equipment in a different segment from therouter that connects to the Internet.Also, in order to enable Internet communication from the device in the local area network, theDomain Name Service is used. In the Internet, the DNS server specifies the domain namerelated to the global IP address of the servers. To recognize the domain names in the Internet,the domain names must be registered in both the DNS server in the Internet, which is managedby the public DNS organization, and the DNS server in the local area network where the remotedevices are actually located. To configure the DNS server in your local area network, create fol-lowing records in the DNS server:y DNS zone name (i.e. “ifax.com”)y Host name of the DNS server (i.e. “nshost”)y NS record to specify the DNS server in your zone (i.e. “nshost.ifax.com”)Client ClientDNS Server Email ServerRouterInternetLAN192.168.0.2 192.168.0.3Proxy Server192.168.0.3192.168.0.4192.168.1.1192.168.1.2 192.168.1.3 192.168.1.4192.168.0.1Global IP AddressRouter