FIREHOL-MAC(5) - Linux man page online | File formats

Ensure source IP and source MAC address match.

Built 04 Nov 2017
firehol-mac(5) 3.1.5 firehol-mac(5)


firehol-mac - ensure source IP and source MAC address match


mac IP macaddr


Any mac commands will affect all traffic destined for the firewall host, or to be forward‐ ed by the host. They must be declared before the first router or interface. Note There is also a mac parameter which allows matching MAC addresses within individual rules (see firehol-params(5)). The mac helper command DROPs traffic from the IP address that was not sent using the macaddr specified. When packets are dropped, a log is produced with the label "MAC MISSMATCH" (sic.). mac obeys the default log limits (see [LOGGING][] in firehol-params(5)). Note This command restricts an IP to a particular MAC address. The same MAC address is permitted send traffic with a different IP.


mac 00:01:01:00:00:e6 mac 00:01:01:02:aa:e8


· firehol(1) - FireHOL program · firehol.conf(5) - FireHOL configuration · firehol-params(5) - optional rule parameters · FireHOL Website ( · FireHOL Online PDF Manual ( · FireHOL Online Documentation (


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FireHOL Reference Built 04 Nov 2017 firehol-mac(5)
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firehol-mac(5) referred by firehol-conf(5)
refer to firehol(1) | firehol-conf(5) | firehol-params(5)
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