Setting up the firewalled client that's attached to the Opengear device

Client devices on the local network must be configured with Gateway and DNS settings. This can be done statically on each device, or using DHCP. 

Manual Configuration

On each client device on the local internal network manually set the static gateway address to be the address of the console server/cellular router device. 

Then set the DNS server address to be the same as used on the external network i.e. if the console server is acting as an internet gateway or a cellular router, then use the ISP provided DNS server address. 

DHCP Configuration 

• Navigate to the System:IP page
• Click the tab of the interface connected to the internal network
• To use the embedded DHCP server, a static IP address and subnet mask for the console server/cellular router needs to be specified
• Click on the Disabled link next to DHCP Server which will bring up the System: DHCP Server page 
  
   
  
  
• Check Enable DHCP Server
• To configure the DHCP server, tick the Use interface address as gateway check box
• Set the Primary/Secondary DNS server address(es) to be the same as used on the external network i.e. if the console server is acting as an internet gateway or a cellular router, then use the ISP provided DNS server address
• Enter the Default Lease time and Maximum Lease time in seconds. The lease time is the time that a dynamically assigned IP address is valid before the client must request it again
• Click Apply 
  
  

The DHCP server will sequentially issue IP addresses from a specified address pool(s):

• Click Add in the Dynamic Address Allocation Pools field
• Enter the DHCP Pool Start Address and End Address and click Apply

The DHCP server also supports pre-assigning IP addresses to be allocated only to specific MAC addresses and reserving IP addresses to be used by connected hosts with fixed IP addresses. To reserve an IP addresses for a particular host. 

Once applied, devices on the internal network will be able to access resources on the external network.

Note: DHCP is available on ACM5500, ACM5000 and IM4200 devices