Lightning SA MultiCom, User Manual

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Chapter 5 Troubleshooting
100 MultiCom Firewall User’s Manual
and if it is change either the LAN or the WAN network so that one of them
uses a different range of IP addresses. For example, reconfigure your LAN
address range to be from 192.168.0.2-192.168.0.100.
DHCP On Your Local Network
Using DHCP on to manage your own network’s IP addresses makes
administration convenient. The most common problem is that a device is unable
to receive an IP configuration from the DHCP server (normally your MultiCom
Firewall. Below are some reasons this might happen.
• your workstations are not configured as DHCP clients
• there are not enough IP addresses for your computers
• there is another DHCP server on your network
• there is another device on your network with the same IP address as your
firewall
• you changed the time on the MultiCom Firewall but did not reboot
Be sure to check the LAN DHCP server leases page to see what IP addresses have
been assigned and their status. These require using the web server diagnostic
pages found at “Web Server Status Reports” on page 74.
Your workstations are not configured as
DHCP clients
Check that each workstation is configured as a DHCP client. For some
operating systems setting this configuration requires you to reboot your
workstation. Please refer to the section on Configuring your Computers or
to the manuals that came with your computer for instructions on configuring
this setting.
There are not enough IP addresses for your
computers
The default setting of the MultiCom Firewalls allows for up to 1,000 DHCP
clients. If you either need more than this or have customized your settings
please refer to the Lightning-Linux manual for more information.
There is another DHCP server on your