<p>IPMAC binding in Fortigate Device :</p><p>DescriptionIn normal operation, FortiGate firewalls offer network control, packet filtering, based on elements such as source and destination IP addresses. This is done using Firewall policies.</p><p>A FortiGate firewall can be configured to restrict access by workstation MAC address. When binding and IP address to a specific MAC address a higher level of control and reporting can be obtained. This allows for greater security as a trusted address that may have been spoofed will be verified against a MAC address to ensure permissions.</p><p>This procedure will only help when devices being restricted reside on the same network segment as a FortiGate interface. When routers are involved, source MAC addresses will be overridden and this check will no longer apply.</p><p>The following is a brief description on how this can be done. ScopeMAC / IP Binding / Filtering SolutionThe feature used in this procedure is called IP/MAC binding. Using CLI, an Administrator may configure manual binding table and configure which MAC address corresponds to which IP address.</p><p>This is only recommended in small to medium networks. Extra caution is required to implement in large networks. As mentioned earlier, if any routing takes place before sending traffic to a FortiGate the issue of source MAC address being replaced with that of a router is a real concern.</p><p>Note: If IP/MAC binding is enabled, and the IP address of a host with an IP or MAC address in the IP/MAC table is changed, or a new computer is added to the network, it is necessary to update the IP/MAC table. If this is not done, the new or changed hosts will not have access to or through the FortiGate unit depending on the settings configured. </p><p>Caution: If a client receives an IP address from the FortiGate unit DHCP server, the client's MAC address is automatically registered in the IP/MAC binding table. </p><p>This can simplify IP/MAC binding configuration, but can also neutralize protection offered by IP/MAC binding if untrusted hosts are allowed to access the DHCP server.</p><p>Use caution when enabling and providing access to the DHCP server. Syntax: config firewall ipmacbinding setting set bindthroughfw {enable | disable} - this is enabling IPMAC binding to get through a Firewall. set bindtofw {enable | disable} - this will check an IP MAC binding combination to allow access TO the firewall set undefinedhost {allow | block} - this defines how the Firewall will treat traffic that has not been bound end</p><p>Syntax: config firewall ipmacbinding table edit <index_int> - the number in the IP/MAC binding table set ip <address_ipv4> - IP address value set mac <address_hex> - MAC address value (separare by colon) set name <name_str> - the name which may be used for this binding set status {enable | disable} - is the binding now enabled end edit <index_int> - the number in the IP/MAC binding table set ip <address_ipv4> - IP address value set mac <address_hex> - MAC address value set name <name_str> - the name which may be used for this binding set status {enable | disable} - is the binding now enabled end</p><p>Syntax: config system interface edit <interface name>->edit internal for LAn port set ipmac {enable | disable } - enable to enable mac binding on interface next end</p><p>Prob:</p><p>How to Disable ipmac in the internal interface</p><p>Soln: config system interface</p><p> edit internal</p><p> unset ipmac</p><p> end</p><p>Prob:</p><p>How to show ipmac table?</p><p>Soln: config firewall ipmacbinding table show Above part is totally configured in your FG.If you want to entry new mac/ip in your fg device then follow below steps.</p><p> config firewall ipmacbinding table edit <index_int> - the number in the IP/MAC binding table set ip <address_ipv4> - IP address value set mac <address_hex> - MAC address value (separare by colon) set name <name_str> - the name which may be used for this binding set status enable - is the binding now enabled end</p>