
Firewall configuration
IP/MAC binding
FortiGate-400 Installation and Configuration Guide
195
Configuring IP/MAC binding for packets going to the firewall
Use the following procedure to use IP/MAC binding to filter packets that would
normally connect with the firewall (for example, when an administrator is connecting to
the FortiGate unit for management).
1
Go to
Firewall > IP/MAC Binding > Setting
.
2
Select Enable IP/MAC binding going to the firewall.
3
Go to
Firewall > IP/MAC Binding > Static IP/MAC
.
4
Select New to add IP/MAC binding pairs to the IP/MAC binding list.
All packets that would normally connect to the firewall are first compared with the
entries in the IP/MAC binding table.
For example, if the IP/MAC pair IP 1.1.1.1 and 12:34:56:78:90:ab:cd is added to the
IP/MAC binding list:
• A packet with IP address 1.1.1.1 and MAC address 12:34:56:78:90:ab:cd is
allowed to connect to the firewall.
• A packet with IP 1.1.1.1 but with a different MAC address is dropped immediately
to prevent IP spoofing.
• A packet with a different IP address but with a MAC address of
12:34:56:78:90:ab:cd is dropped immediately to prevent IP spoofing.
• A packet with both the IP address and MAC address not defined in the IP/MAC
binding table:
• is allowed to connect to the firewall if IP/MAC binding is set to Allow traffic,
• is blocked if IP/MAC binding is set to Block traffic.
Adding IP/MAC addresses
1
Go to
Firewall > IP/MAC Binding > Static IP/MAC
.
2
Select New to add an IP address/MAC address pair.
3
Enter the IP address and the MAC address.
You can bind multiple IP addresses to the same MAC address. You cannot bind
multiple MAC addresses to the same IP address.
However, you can set the IP address to 0.0.0.0 for multiple MAC addresses. This
means that all packets with these MAC addresses are matched with the IP/MAC
binding list.
Similarly, you can set the MAC address to 00:00:00:00:00:00 for multiple IP
addresses. This means that all packets with these IP addresses are matched with the
IP/MAC binding list.
4
Enter a Name for the new IP/MAC address pair.
The name can contain numbers (0-9), uppercase and lowercase letters (A-Z, a-z), and
the special characters - and _. Other special characters and spaces are not allowed.
5
Select Enable to enable IP/MAC binding for the IP/MAC pair.
6
Select OK to save the IP/MAC binding pair.
Summary of Contents for FortiGate 400
Page 13: ...Contents FortiGate 400 Installation and Configuration Guide 13 Glossary 295 Index 299 ...
Page 14: ...Contents 14 Fortinet Inc ...
Page 44: ...44 Fortinet Inc Next steps Getting started ...
Page 74: ...74 Fortinet Inc Transparent mode configuration examples Transparent mode installation ...
Page 148: ...148 Fortinet Inc Providing DHCP services to your internal network Network configuration ...
Page 168: ...168 Fortinet Inc Customizing replacement messages System configuration ...
Page 200: ...200 Fortinet Inc Content profiles Firewall configuration ...
Page 258: ...258 Fortinet Inc Logging attacks Network Intrusion Detection System NIDS ...
Page 294: ...294 Fortinet Inc Configuring alert email Logging and reporting ...
Page 298: ...298 Fortinet Inc Glossary ...
Page 308: ...308 Fortinet Inc Index ...